Space Transportation: Progress of the X-33 Reusable Launch Vehicle
Program (Testimony, 09/29/1999, GAO/T-NSIAD-99-243).

Pursuant to a congressional request, GAO discussed the status of the
National Aeronautics and Space Administration's (NASA) X-33 Reusable
Launch Vehicle Program, focusing on: (1) whether the X-33 Program is
meeting its original cost, schedule, and performance objectives; (2) how
NASA conducts oversight under the cooperative agreement; and (3) issues
NASA may face if it decides to use Lockheed Martin's VentureStar to
service the International Space Station.

GAO noted that: (1) because of problems in developing technologies for
the X-33, the program will not meet some of its original cost, schedule,
and performance objectives, (2) costs have increased, the test vehicle's
first flight was delayed by 16 months, and some performance
objectives--such as a speed reduction from Mach 15 to Mach 13.8--were
reduced; (3) when the cooperative agreement was established in July
1996, Lockheed Martin and industry partners' contributions totalled
$211.6 million; NASA's contribution was fixed at $912.4 million; (4) GAO
estimated that between July 1996 and March 1999, contractors' total
contributions increased by $75 million, to $286.6 million in response to
problems encountered during development; (5) estimated government costs
for NASA civil service personnel working on the program also increased,
from $95.2 million to $113.1 million; (6) these costs for NASA personnel
are not included in the agency's agreement contribution; they are paid
out of another budget account; (7) because the agreement permits NASA
employees to work side by side with Lockheed Martin employees to perform
various technical tasks, NASA's oversight of the program is based on
real-time and detailed insights from its personnel; (8) with information
from its employees, NASA's X-33 program office monitors and verifies the
program's progress and pays the contractor when it meets milestones; (9)
several issues will need to be addressed before NASA can decide whether
to use VentureStar reusable launch vehicles to support the International
Space Station; (10) the results of the X-33 Program must provide
sufficient information for NASA to determine that risks have been
adequately reduced and that continuation of activities leading to the
agency's use of VentureStar is warranted; (11) even though VentureStar
reusable launch vehicles are intended to be commercially owned and
operated, government financial incentives may be needed to initiate such
a venture; (12) the amount NASA would have to pay in additional
development and production costs to enable VentureStar to carry people
would need to be determined; (13) the need for and effect of additional
flights would need to be considered; (14) because VentureStar would not
carry as much cargo as the space shuttle, more frequent dockings are
likely; (15) the design and management of the X-33 Program agreement
reflect the intent of the National Space Transportation Policy; and (16)
however, the extent that the program will achieve a cost reduction
envisioned by that policy is unclear at this time.

--------------------------- Indexing Terms -----------------------------

 REPORTNUM:  T-NSIAD-99-243
     TITLE:  Space Transportation: Progress of the X-33 Reusable Launch
	     Vehicle Program
      DATE:  09/29/1999
   SUBJECT:  Cost control
	     Schedule slippages
	     Aerospace contracts
	     Aerospace engineering
	     Space exploration
	     Cooperative agreements
	     Contract oversight
	     Cost overruns
IDENTIFIER:  NASA X-33 Program
	     Venture Star Reusable Launch Vehicle
	     NASA International Space Station Alpha Program

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Rev-LG logo.eps
GAO United States General Accounting Office
Testimony Before the Committee on Science, Subcommittee on Space and Aeronautics, House of Representatives
For Release Expected at 2: 00 p. m. EDT Wednesday, September 29, 1999
SPACE TRANSPORTATION
Progress of the X- 33 Reusable Launch Vehicle Program
Statement of Allen Li, Associate Director, National Security and International Affairs Division

GAO/T-NSIAD-99-243

Page 1 GAO/ T- NSIAD- 99- 243
Mr. Chairman and Members of the Subcommittee: We are pleased to be here today to discuss the status of the National Aeronautics and Space Administration's (NASA) X- 33 Reusable Launch Vehicle Program. The purpose of this program, co- sponsored under a cooperative agreement between NASA and the Lockheed Martin Corporation, is to develop and demonstrate advanced technologies and techniques needed for future reusable launch vehicles. These vehicles are in essence spacecraft or rockets whose components either all or in
part are utilized on subsequent flights. If the X- 33 Program is successful, Lockheed Martin may build a small fleet of operational vehicles called VentureStars. One way for NASA to reduce future launch costs may be to phase out the space shuttle fleet and purchase launch services from commercial sources. Our testimony summarizes our recent report on the X- 33 Program 1 and discusses (1) whether the X- 33 Program is meeting its
original cost, schedule, and performance objectives; (2) how NASA conducts oversight under the cooperative agreement; and (3) issues NASA may face if it decides to use Lockheed Martin's VentureStar to service the International Space Station. At your request, we are also commenting on
the progress of the X- 33 Program in meeting the intent of the National Space Transportation Policy, the directive that establishes national policy, guidelines, and implementing actions for the conduct of national space
transportation programs that will sustain and revitalize U. S. space transportation capabilities.
Summary Because of problems in developing technologies for the X- 33, the program will not meet some of its original cost, schedule, and performance
objectives. Costs have increased, the test vehicle's first flight was delayed by 16 months, and some performance objectives-such as a speed reduction from Mach 15 to Mach 13.8-were reduced. When the cooperative agreement was established in July 1996, Lockheed Martin and industry
partners' contributions totaled $211.6 million; NASA's contribution was fixed at $912. 4 million. We estimate that between July 1996 and March 1999, contractors' total contributions increased by $75 million, to $286.6 million in response to problems encountered during development. Estimated government costs for NASA civil service personnel working on the program
also increased, from $95. 2 million to $113.1 million. These costs for NASA 1 Space Transportation: Status of the X- 33 Reusable Launch Vehicle Program (GAO/ NSIAD- 99- 176, Aug. 11, 1999).
Page 2 GAO/ T- NSIAD- 99- 243
personnel are not included in the agency's agreement contribution; they are paid out of another budget account. Because the agreement permits NASA employees to work side by side with Lockheed Martin employees to perform various technical tasks, NASA's oversight of the program is based on real- time and detailed insights from its personnel. With information from its employees, NASA's X- 33 program
office monitors and verifies the program's progress and pays the contractor when it meets milestones. Several issues will need to be addressed before NASA can decide whether to use VentureStar reusable launch vehicles to support the International Space Station. First, the results of the X- 33 Program must provide sufficient information for NASA to determine that risks have been adequately reduced and that continuation of activities leading to the agency's use of VentureStar is warranted. Second, even though VentureStar reusable launch vehicles are intended to be commercially owned and operated, government financial incentives may be needed to initiate such a venture.
Third, the amount NASA would have to pay in additional development and production costs to enable VentureStar to carry people would need to be determined. Fourth, the need for and effect of additional flights would need to be considered. Because VentureStar would not carry as much cargo as the space shuttle, more frequent dockings are likely. This could reduce the
amount of stable time available for some science operations. The design and management of the X- 33 Program agreement reflect the intent of the National Space Transportation Policy. However, the extent that the program will achieve a cost reduction envisioned by that policy is
unclear at this time. In our August 1999 report, we recommended that NASA establish performance targets and a clear linkage between the X- 33 Program and the agency's objective of reducing the cost of access to space. NASA concurred with our recommendation and stated that it would develop performance targets for the X- 33 Program that (1) establish a clear path leading from the X- 33 flight- test vehicle to an operational reusable launch vehicle and (2) show progress toward meeting the agency's objective of significantly reducing launch costs.
Background The X- 33 will be a half- scale model of Lockheed Martin's planned singlestage- to- orbit VentureStar, an operational vehicle that does not drop tanks
and boosters along its flight path like today's launch vehicles. Lockheed Martin's and NASA's roles and responsibilities on the X- 33 Program,
Page 3 GAO/ T- NSIAD- 99- 243
including joint funding arrangements, were set forth in a cooperative agreement established in July 1996. NASA's decision on whether and how to upgrade its shuttle fleet will
depend, in part, on the results of the X- 33 Program. The X- 33 Program is a key part of NASA's strategy to reduce launch costs from $10, 000 per pound on the space shuttle to $1,000 per pound using reusable launch vehicles. If the X- 33 Program is successful and Lockheed Martin decides to build
VentureStar, the company plans to begin launching cargo- only flights starting in 2005 and passenger flights starting in 2007. Lockheed Martin estimates that it would cost $7.2 billion to build and begin operating two vehicles. NASA would be one of Lockheed Martin's potential customers for
the cargo- only flights and, at this time, is the only anticipated customer for passenger flights. The passenger flights would carry crewmembers to and from the International Space Station.
Technical Problems Have Resulted in Increased Cost, Schedule Delays, and Reduced Performance
Objectives The X- 33 Program has experienced technical difficulties developing
advanced technologies for three key components of VentureStar: the fuel tanks, engines, and the heat shield. For example, the first major technical problem arose during fabrication of one of the fuel tanks used on the X- 33. Sections of the tanks are made by bonding together layers of composite materials. Difficulties were encountered in bonding two lobes onto a
y- shaped joint in the left- hand tank. The affected sections were removed, and two new sections were fabricated and are being installed on the tank. The right- hand fuel tank did not experience such fabrication difficulties
and is undergoing qualification tests at NASA's Marshall Space Flight Center. As discussed in our August 1999 report, other technical problems were experienced while fabricating one of the exhaust ramps for the rocket
engines and during fabrication of metallic panels used for thermal protection.
Resolving the technical problems increased both industry and government costs. As of March 1999, Lockheed Martin estimated that industry's contributions to complete the X- 33 cooperative agreement had increased by $75 million, from $211.6 million to $286. 6 million. The company has not yet formally revised the industry team's estimated contribution, but expects to do so within the near future. In addition, estimated government costs for NASA civil service personnel working on the program not included in NASA's X- 33 program budget also increased, from $95.2 million to $113.1 million. These personnel costs are for salaries, benefits, and support services for the government personnel working on the program at
Page 4 GAO/ T- NSIAD- 99- 243
various NASA centers; such costs will be paid out of another NASA budget account.
In addition, the government will bear part of industries cost increases because Lockheed Martin and its partners are allowed to recover independent research and development expenses by including them as overhead in other government contracts. Potential government reimbursement of industry's independent research and development costs, which is subject to an audit or review, is estimated at $161.2 million as of March 1999. As a result, after factoring in both this potential
reimbursement and NASA personnel costs not included in the program budget, we believe a more accurate representation of the estimated government's share of the X- 33 Program is about $1. 29 billion, while industry's estimated share is $125.4 million.
Technical difficulties have also caused test flight delays. The problems encountered during fabrication of the engines and one of the fuel tanks led to a 16- month delay of the first test flight of the X- 33 vehicle, from March 1999 to July 2000. However, the program's December 2000 completion date remains unchanged. Lockheed Martin has maintained the original X- 33 Program completion date by reducing VentureStar design and development work that the company had planned to accomplish. Although problems in fabricating the heat shield panels delayed delivery of the panels, this did not affect the first flight schedule because the schedule had already been delayed by the engine and fuel tank problems.
Technical problems and schedule constraints led Lockheed Martin and NASA to change two X- 33 Program objectives and flight- test milestones. For example, the test flight speed objective was reduced from Mach 2 15 to Mach 13.8. According to Lockheed Martin and NASA X- 33 program
managers, the flight- test speed was reduced because the detailed design phase of the program determined that the vehicle's projected weight would exceed design requirements and prevent it from reaching Mach 15. After reviewing the vehicle's design and technical objectives for the flight tests, a panel of experts convened by NASA concluded that the flight- test technical objectives could be achieved at a lower speed. According to Lockheed
Martin and NASA program officials, weight reduction measures have 2 Mach numbers represent speed measured as units of the speed of sound, which is 741 miles per hour at sea level. For example, Mach 2 equals 1,482 miles per hour.
Page 5 GAO/ T- NSIAD- 99- 243
already been incorporated into the preliminary design of the VentureStar to meet the vehicle weight requirements.
NASA Relies on Insight Gained by Working With Lockheed Martin
According to NASA program officials, the X- 33 cooperative agreement establishes a partnership business relationship between NASA and Lockheed Martin, and changes to the agreement must be made bilaterally. The agreement assigns to Lockheed Martin responsibility for managing and implementing the X- 33 Program but also permits substantial involvement of NASA personnel in performing various program technical tasks at NASA
centers, under the direction of Lockheed Martin. However, NASA program managers ensure milestones are met before payments are made to Lockheed Martin.
The cooperative agreement enables NASA to obtain information about the program as it happens. In traditional research and development contracts, such information is gained mostly after the fact; NASA sends personnel to contractor facilities to perform an extensive review of whether the contractor performed its assigned tasks in accordance with contract specifications. In contrast, under the X- 33 cooperative agreement, technical personnel work side by side with personnel from Lockheed
Martin and other industry partners. This ongoing involvement in the work enables NASA to obtain real- time and detailed insight into program activities. For example, NASA became aware of a significant problem with
a fuel tank component only 1- day after the problem occurred. Oversight is also performed by entities independent of the X- 33 Program. For example, NASA's Advisory Council performs periodic reviews of the X- 33 Program. Members of the Council are volunteers appointed by NASA; the Council reports to the NASA Administrator. At a recent meeting, Council members discussed concerns about (1) whether there was a clear growth path leading from the X- 33 flight- test vehicle to an operational single- stage- to- orbit vehicle and (2) NASA's lack of funding to pursue the
shuttle/ space station programs and single- stage- to- orbit development at the same time.
Page 6 GAO/ T- NSIAD- 99- 243
Issues Facing NASA if VentureStar Is Used to Support the International Space Station
Before NASA decides to use VentureStar to support the space station, it will need to evaluate (1) whether adequate progress has been made in resolving the technical problems in developing an operational reusable launch vehicle; (2) what government financial incentives, such as loan guarantees, may be needed to assist in developing an operational fleet of VentureStars; (3) what NASA's costs would be to build either two crew return modules or to modify VentureStar vehicles to carry crewmembers to and from the space station; and (4) what effect a larger number of VentureStar dockings would have on the operation of the space station and
its science experiments because of VentureStar's lower cargo capacity. Establishing confidence that the X- 33 Program results support reusable launch vehicle development will be important. In 1995, the Office of Science and Technology Policy, the Office of Management and Budget, and
NASA jointly established criteria to be used in deciding whether the government should proceed beyond the X- 33 Program to support development of an operational single- stage- to- orbit VentureStar. The
specific technical criteria for proceeding beyond the X- 33 Program include requirements that NASA and the industry team use a flight- test vehicle to demonstrate technologies that are scalable to potential single- stage- to- orbit reusable launch vehicle configurations-a vehicle whose components are launched and returned as a single unit.
Another issue NASA will face is determining the future financial incentives the federal government may need to provide before Lockheed Martin can begin building VentureStar. Government incentives could be needed to enable Lockheed Martin to secure affordable private sector financing of the estimated $7.2- billion cost of building two reusable launch vehicles and begin flight operations. Borrowing costs for the VentureStar might be relatively high because investors would require a high rate of return due to the technical risks inherent in building a new space- launch vehicle. Government incentives could take several forms, including loan guarantees
or NASA- funded technology development efforts. Lockheed Martin plans to build VentureStars that initially carry only cargo and begin flights in 2005. Lockheed Martin is designing the VentureStar primarily to meet the needs of commercial customers who want to launch
satellites. However, because much of Lockheed Martin's VentureStar projected revenues will come from servicing the International Space Station, the company is exploring design modifications that would enable the vehicles to carry four or five crewmembers. According to NASA's X- 33
Page 7 GAO/ T- NSIAD- 99- 243
program manager, if the agency chooses to use VentureStar to service the International Space Station, NASA would need to obtain either two crew modules, at an estimated cost of $900 million to $1.2 billion, to be carried in the VentureStar cargo bay or two crew transfer/ return vehicles being
developed for the International Space Station. 3 NASA will need to determine the effect of VentureStar on space station operations if it chooses to use that vehicle to assume the space shuttle's mission. For example, the agency's projections show that more VentureStar flights would be needed because the space shuttle can carry heavier payloads. Additional flights would result in more docking and undocking operations, potentially disrupting scientific activities aboard the space
station. The space station requires replenishment of supplies for science experiments as well as propulsion fuel, spare parts, food, water, and air. Periodic replacement of station crewmembers is also required. NASA
currently plans to use an average of five shuttle flights per year to resupply the station and to have some of its international partners use an average of eight flights per year to supply the station on other launch vehicles. Additional resupply flights would likely be required to provide the people and materials needed to solve technical problems that may arise aboard the space station. Each space shuttle can carry 34,200 pounds of cargo, including up to seven people, to the space station. However, in servicing the International Space Station, a VentureStar vehicle would be able to
carry 25,800 pounds of cargo or three to four people and a small amount of cargo. Also, NASA plans to use shuttle crewmembers on the resupply flights to perform maintenance of the station. According to NASA X- 33 program officials, a VentureStar vehicle would have to make two to three flights to provide as much cargo, as many people, or as much maintenance
support to the space station as a single shuttle flight. The actual number of flights would depend on the mix of cargo, people, and maintenance operations required for a particular mission.
3 The emergency return vehicle for the International Space Station crew is being considered as an alternative that would be attached to the exterior of the VentureStar.
Page 8 GAO/ T- NSIAD- 99- 243
Progress Toward Meeting National Space Transportation Policy Goals
The design and management agreement of the X- 33 Program reflect the goals and guidelines of the National Space Transportation Policy. Issued in August 1994, this policy establishes national policy, guidelines, and implementing actions for the conduct of national space transportation programs that will sustain and revitalize U. S. space transportation
capabilities. Assuring reliable and affordable access to space through U. S. space transportation capabilities is identified as a fundamental goal. In support of that goal, the policy states that the U. S. government will promote the reduction in the cost of current space transportation systems.
Relevant to the X- 33 Program, the policy's guidelines state that (1) NASA will be the lead agency for technology development and demonstration of next generation reusable space transportation systems, (2) the objective of NASA's technology development and demonstration effort is to support
government and private sector decisions by the end of the decade on development of an operational next- generation reusable launch system, and (3) it is envisioned that the private sector could have a significant role in managing the development and operation of a new reusable space transportation system. The X- 33 partnership established between NASA and Lockheed Martin,
Lockheed Martin's proposed VentureStar, and NASA's intent to acquire commercially provided launch services are indications that NASA is meeting the intent of the policy. However, the extent the X- 33 Program will
enable NASA to achieve cost reductions is unclear at this time and depends on the success NASA and Lockheed Martin achieve in resolving several challenges. These challenges range, in the short term, from implementing a
successful test flight program that demonstrates needed technologies to, in the long term, moving ahead with a reusable launch vehicle such as the VentureStar that can meet both commercial and government needs in a timely and cost- effective manner. In this regard, adopting annual measurable objectives and performance targets that establish a clear path leading from the X- 33 test flight vehicle to an operational reusable launch
vehicle, as we recommended in our August 1999 report, will help ensure the program continues in that direction. NASA concurred with our recommendation.
Page 9 GAO/ T- NSIAD- 99- 243
Mr. Chairman, this concludes our statement. We will be happy to answer any questions you or Members of the Subcommittee may have. Contact and Acknowledgement
For future contacts regarding this testimony, please contact Allen Li at (202) 512- 4841. Individuals making key contributions to this testimony included Jerry Herley, Jeffery Webster, and Lorene Sarne.
(707448) Letter
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Rev-LG logo.eps GAO United States General Accounting Office
Testimony Before the Committee on Science, Subcommittee on Space
and Aeronautics, House of Representatives For Release Expected at
2: 00 p. m. EDT Wednesday, September 29, 1999 SPACE TRANSPORTATION
Progress of the X- 33 Reusable Launch Vehicle Program Statement of
Allen Li, Associate Director, National Security and International
Affairs Division   GAO/T-NSIAD-99-243  Page 1 GAO/T-NSIAD-99-243
Mr. Chairman and Members of the Subcommittee: We are pleased to be
here today to discuss the status of the National Aeronautics and
Space Administration's (NASA) X- 33 Reusable Launch Vehicle
Program. The purpose of this program, co- sponsored under a
cooperative agreement between NASA and the Lockheed Martin
Corporation, is to develop and demonstrate advanced technologies
and techniques needed for future reusable launch vehicles. These
vehicles are in essence spacecraft or rockets whose components
either all or in part are utilized on subsequent flights. If the
X- 33 Program is successful, Lockheed Martin may build a small
fleet of operational vehicles called VentureStars. One way for
NASA to reduce future launch costs may be to phase out the space
shuttle fleet and purchase launch services from commercial
sources. Our testimony summarizes our recent report on the X- 33
Program 1 and discusses (1) whether the X- 33 Program is meeting
its original cost, schedule, and performance objectives; (2) how
NASA conducts oversight under the cooperative agreement; and (3)
issues NASA may face if it decides to use Lockheed Martin's
VentureStar to service the International Space Station. At your
request, we are also commenting on the progress of the X- 33
Program in meeting the intent of the National Space Transportation
Policy, the directive that establishes national policy,
guidelines, and implementing actions for the conduct of national
space transportation programs that will sustain and revitalize U.
S. space transportation capabilities. Summary Because of problems
in developing technologies for the X- 33, the program will not
meet some of its original cost, schedule, and performance
objectives. Costs have increased, the test vehicle's first flight
was delayed by 16 months, and some performance objectives-such as
a speed reduction from Mach 15 to Mach 13.8-were reduced. When the
cooperative agreement was established in July 1996, Lockheed
Martin and industry partners' contributions totaled $211.6
million; NASA's contribution was fixed at $912. 4 million. We
estimate that between July 1996 and March 1999, contractors' total
contributions increased by $75 million, to $286.6 million in
response to problems encountered during development. Estimated
government costs for NASA civil service personnel working on the
program also increased, from $95. 2 million to $113.1 million.
These costs for NASA 1 Space Transportation: Status of the X- 33
Reusable Launch Vehicle Program (GAO/NSIAD-99-176, Aug. 11, 1999).
Page 2 GAO/T-NSIAD-99-243 personnel are not included in the
agency's agreement contribution; they are paid out of another
budget account. Because the agreement permits NASA employees to
work side by side with Lockheed Martin employees to perform
various technical tasks, NASA's oversight of the program is based
on real- time and detailed insights from its personnel. With
information from its employees, NASA's X- 33 program office
monitors and verifies the program's progress and pays the
contractor when it meets milestones. Several issues will need to
be addressed before NASA can decide whether to use VentureStar
reusable launch vehicles to support the International Space
Station. First, the results of the X- 33 Program must provide
sufficient information for NASA to determine that risks have been
adequately reduced and that continuation of activities leading to
the agency's use of VentureStar is warranted. Second, even though
VentureStar reusable launch vehicles are intended to be
commercially owned and operated, government financial incentives
may be needed to initiate such a venture. Third, the amount NASA
would have to pay in additional development and production costs
to enable VentureStar to carry people would need to be determined.
Fourth, the need for and effect of additional flights would need
to be considered. Because VentureStar would not carry as much
cargo as the space shuttle, more frequent dockings are likely.
This could reduce the amount of stable time available for some
science operations. The design and management of the X- 33 Program
agreement reflect the intent of the National Space Transportation
Policy. However, the extent that the program will achieve a cost
reduction envisioned by that policy is unclear at this time. In
our August 1999 report, we recommended that NASA establish
performance targets and a clear linkage between the X- 33 Program
and the agency's objective of reducing the cost of access to
space. NASA concurred with our recommendation and stated that it
would develop performance targets for the X- 33 Program that (1)
establish a clear path leading from the X- 33 flight- test vehicle
to an operational reusable launch vehicle and (2) show progress
toward meeting the agency's objective of significantly reducing
launch costs. Background The X- 33 will be a half- scale model of
Lockheed Martin's planned singlestage- to- orbit VentureStar, an
operational vehicle that does not drop tanks and boosters along
its flight path like today's launch vehicles. Lockheed Martin's
and NASA's roles and responsibilities on the X- 33 Program, Page 3
GAO/T-NSIAD-99-243 including joint funding arrangements, were set
forth in a cooperative agreement established in July 1996. NASA's
decision on whether and how to upgrade its shuttle fleet will
depend, in part, on the results of the X- 33 Program. The X- 33
Program is a key part of NASA's strategy to reduce launch costs
from $10, 000 per pound on the space shuttle to $1,000 per pound
using reusable launch vehicles. If the X- 33 Program is successful
and Lockheed Martin decides to build VentureStar, the company
plans to begin launching cargo- only flights starting in 2005 and
passenger flights starting in 2007. Lockheed Martin estimates that
it would cost $7.2 billion to build and begin operating two
vehicles. NASA would be one of Lockheed Martin's potential
customers for the cargo- only flights and, at this time, is the
only anticipated customer for passenger flights. The passenger
flights would carry crewmembers to and from the International
Space Station. Technical Problems Have Resulted in Increased Cost,
Schedule Delays, and Reduced Performance Objectives The X- 33
Program has experienced technical difficulties developing advanced
technologies for three key components of VentureStar: the fuel
tanks, engines, and the heat shield. For example, the first major
technical problem arose during fabrication of one of the fuel
tanks used on the X- 33. Sections of the tanks are made by bonding
together layers of composite materials. Difficulties were
encountered in bonding two lobes onto a y- shaped joint in the
left- hand tank. The affected sections were removed, and two new
sections were fabricated and are being installed on the tank. The
right- hand fuel tank did not experience such fabrication
difficulties and is undergoing qualification tests at NASA's
Marshall Space Flight Center. As discussed in our August 1999
report, other technical problems were experienced while
fabricating one of the exhaust ramps for the rocket engines and
during fabrication of metallic panels used for thermal protection.
Resolving the technical problems increased both industry and
government costs. As of March 1999, Lockheed Martin estimated that
industry's contributions to complete the X- 33 cooperative
agreement had increased by $75 million, from $211.6 million to
$286. 6 million. The company has not yet formally revised the
industry team's estimated contribution, but expects to do so
within the near future. In addition, estimated government costs
for NASA civil service personnel working on the program not
included in NASA's X- 33 program budget also increased, from $95.2
million to $113.1 million. These personnel costs are for salaries,
benefits, and support services for the government personnel
working on the program at Page 4 GAO/T-NSIAD-99-243 various NASA
centers; such costs will be paid out of another NASA budget
account. In addition, the government will bear part of industries
cost increases because Lockheed Martin and its partners are
allowed to recover independent research and development expenses
by including them as overhead in other government contracts.
Potential government reimbursement of industry's independent
research and development costs, which is subject to an audit or
review, is estimated at $161.2 million as of March 1999. As a
result, after factoring in both this potential reimbursement and
NASA personnel costs not included in the program budget, we
believe a more accurate representation of the estimated
government's share of the X- 33 Program is about $1. 29 billion,
while industry's estimated share is $125.4 million. Technical
difficulties have also caused test flight delays. The problems
encountered during fabrication of the engines and one of the fuel
tanks led to a 16- month delay of the first test flight of the X-
33 vehicle, from March 1999 to July 2000. However, the program's
December 2000 completion date remains unchanged. Lockheed Martin
has maintained the original X- 33 Program completion date by
reducing VentureStar design and development work that the company
had planned to accomplish. Although problems in fabricating the
heat shield panels delayed delivery of the panels, this did not
affect the first flight schedule because the schedule had already
been delayed by the engine and fuel tank problems. Technical
problems and schedule constraints led Lockheed Martin and NASA to
change two X- 33 Program objectives and flight- test milestones.
For example, the test flight speed objective was reduced from Mach
2 15 to Mach 13.8. According to Lockheed Martin and NASA X- 33
program managers, the flight- test speed was reduced because the
detailed design phase of the program determined that the vehicle's
projected weight would exceed design requirements and prevent it
from reaching Mach 15. After reviewing the vehicle's design and
technical objectives for the flight tests, a panel of experts
convened by NASA concluded that the flight- test technical
objectives could be achieved at a lower speed. According to
Lockheed Martin and NASA program officials, weight reduction
measures have 2 Mach numbers represent speed measured as units of
the speed of sound, which is 741 miles per hour at sea level. For
example, Mach 2 equals 1,482 miles per hour. Page 5 GAO/T-NSIAD-
99-243 already been incorporated into the preliminary design of
the VentureStar to meet the vehicle weight requirements. NASA
Relies on Insight Gained by Working With Lockheed Martin According
to NASA program officials, the X- 33 cooperative agreement
establishes a partnership business relationship between NASA and
Lockheed Martin, and changes to the agreement must be made
bilaterally. The agreement assigns to Lockheed Martin
responsibility for managing and implementing the X- 33 Program but
also permits substantial involvement of NASA personnel in
performing various program technical tasks at NASA centers, under
the direction of Lockheed Martin. However, NASA program managers
ensure milestones are met before payments are made to Lockheed
Martin. The cooperative agreement enables NASA to obtain
information about the program as it happens. In traditional
research and development contracts, such information is gained
mostly after the fact; NASA sends personnel to contractor
facilities to perform an extensive review of whether the
contractor performed its assigned tasks in accordance with
contract specifications. In contrast, under the X- 33 cooperative
agreement, technical personnel work side by side with personnel
from Lockheed Martin and other industry partners. This ongoing
involvement in the work enables NASA to obtain real- time and
detailed insight into program activities. For example, NASA became
aware of a significant problem with a fuel tank component only 1-
day after the problem occurred. Oversight is also performed by
entities independent of the X- 33 Program. For example, NASA's
Advisory Council performs periodic reviews of the X- 33 Program.
Members of the Council are volunteers appointed by NASA; the
Council reports to the NASA Administrator. At a recent meeting,
Council members discussed concerns about (1) whether there was a
clear growth path leading from the X- 33 flight- test vehicle to
an operational single- stage- to- orbit vehicle and (2) NASA's
lack of funding to pursue the shuttle/ space station programs and
single- stage- to- orbit development at the same time. Page 6
GAO/T-NSIAD-99-243 Issues Facing NASA if VentureStar Is Used to
Support the International Space Station Before NASA decides to use
VentureStar to support the space station, it will need to evaluate
(1) whether adequate progress has been made in resolving the
technical problems in developing an operational reusable launch
vehicle; (2) what government financial incentives, such as loan
guarantees, may be needed to assist in developing an operational
fleet of VentureStars; (3) what NASA's costs would be to build
either two crew return modules or to modify VentureStar vehicles
to carry crewmembers to and from the space station; and (4) what
effect a larger number of VentureStar dockings would have on the
operation of the space station and its science experiments because
of VentureStar's lower cargo capacity. Establishing confidence
that the X- 33 Program results support reusable launch vehicle
development will be important. In 1995, the Office of Science and
Technology Policy, the Office of Management and Budget, and NASA
jointly established criteria to be used in deciding whether the
government should proceed beyond the X- 33 Program to support
development of an operational single- stage- to- orbit
VentureStar. The specific technical criteria for proceeding beyond
the X- 33 Program include requirements that NASA and the industry
team use a flight- test vehicle to demonstrate technologies that
are scalable to potential single- stage- to- orbit reusable launch
vehicle configurations-a vehicle whose components are launched and
returned as a single unit. Another issue NASA will face is
determining the future financial incentives the federal government
may need to provide before Lockheed Martin can begin building
VentureStar. Government incentives could be needed to enable
Lockheed Martin to secure affordable private sector financing of
the estimated $7.2- billion cost of building two reusable launch
vehicles and begin flight operations. Borrowing costs for the
VentureStar might be relatively high because investors would
require a high rate of return due to the technical risks inherent
in building a new space- launch vehicle. Government incentives
could take several forms, including loan guarantees or NASA-
funded technology development efforts. Lockheed Martin plans to
build VentureStars that initially carry only cargo and begin
flights in 2005. Lockheed Martin is designing the VentureStar
primarily to meet the needs of commercial customers who want to
launch satellites. However, because much of Lockheed Martin's
VentureStar projected revenues will come from servicing the
International Space Station, the company is exploring design
modifications that would enable the vehicles to carry four or five
crewmembers. According to NASA's X- 33 Page 7 GAO/T-NSIAD-99-243
program manager, if the agency chooses to use VentureStar to
service the International Space Station, NASA would need to obtain
either two crew modules, at an estimated cost of $900 million to
$1.2 billion, to be carried in the VentureStar cargo bay or two
crew transfer/ return vehicles being developed for the
International Space Station. 3 NASA will need to determine the
effect of VentureStar on space station operations if it chooses to
use that vehicle to assume the space shuttle's mission. For
example, the agency's projections show that more VentureStar
flights would be needed because the space shuttle can carry
heavier payloads. Additional flights would result in more docking
and undocking operations, potentially disrupting scientific
activities aboard the space station. The space station requires
replenishment of supplies for science experiments as well as
propulsion fuel, spare parts, food, water, and air. Periodic
replacement of station crewmembers is also required. NASA
currently plans to use an average of five shuttle flights per year
to resupply the station and to have some of its international
partners use an average of eight flights per year to supply the
station on other launch vehicles. Additional resupply flights
would likely be required to provide the people and materials
needed to solve technical problems that may arise aboard the space
station. Each space shuttle can carry 34,200 pounds of cargo,
including up to seven people, to the space station. However, in
servicing the International Space Station, a VentureStar vehicle
would be able to carry 25,800 pounds of cargo or three to four
people and a small amount of cargo. Also, NASA plans to use
shuttle crewmembers on the resupply flights to perform maintenance
of the station. According to NASA X- 33 program officials, a
VentureStar vehicle would have to make two to three flights to
provide as much cargo, as many people, or as much maintenance
support to the space station as a single shuttle flight. The
actual number of flights would depend on the mix of cargo, people,
and maintenance operations required for a particular mission. 3
The emergency return vehicle for the International Space Station
crew is being considered as an alternative that would be attached
to the exterior of the VentureStar. Page 8 GAO/T-NSIAD-99-243
Progress Toward Meeting National Space Transportation Policy Goals
The design and management agreement of the X- 33 Program reflect
the goals and guidelines of the National Space Transportation
Policy. Issued in August 1994, this policy establishes national
policy, guidelines, and implementing actions for the conduct of
national space transportation programs that will sustain and
revitalize U. S. space transportation capabilities. Assuring
reliable and affordable access to space through U. S. space
transportation capabilities is identified as a fundamental goal.
In support of that goal, the policy states that the U. S.
government will promote the reduction in the cost of current space
transportation systems. Relevant to the X- 33 Program, the
policy's guidelines state that (1) NASA will be the lead agency
for technology development and demonstration of next generation
reusable space transportation systems, (2) the objective of NASA's
technology development and demonstration effort is to support
government and private sector decisions by the end of the decade
on development of an operational next- generation reusable launch
system, and (3) it is envisioned that the private sector could
have a significant role in managing the development and operation
of a new reusable space transportation system. The X- 33
partnership established between NASA and Lockheed Martin, Lockheed
Martin's proposed VentureStar, and NASA's intent to acquire
commercially provided launch services are indications that NASA is
meeting the intent of the policy. However, the extent the X- 33
Program will enable NASA to achieve cost reductions is unclear at
this time and depends on the success NASA and Lockheed Martin
achieve in resolving several challenges. These challenges range,
in the short term, from implementing a successful test flight
program that demonstrates needed technologies to, in the long
term, moving ahead with a reusable launch vehicle such as the
VentureStar that can meet both commercial and government needs in
a timely and cost- effective manner. In this regard, adopting
annual measurable objectives and performance targets that
establish a clear path leading from the X- 33 test flight vehicle
to an operational reusable launch vehicle, as we recommended in
our August 1999 report, will help ensure the program continues in
that direction. NASA concurred with our recommendation. Page 9
GAO/T-NSIAD-99-243 Mr. Chairman, this concludes our statement. We
will be happy to answer any questions you or Members of the
Subcommittee may have. Contact and Acknowledgement For future
contacts regarding this testimony, please contact Allen Li at
(202) 512- 4841. Individuals making key contributions to this
testimony included Jerry Herley, Jeffery Webster, and Lorene
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