[Federal Register Volume 59, Number 24 (Friday, February 4, 1994)]
[Unknown Section]
[Page 0]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 94-2531]


[[Page Unknown]]

[Federal Register: February 4, 1994]


-----------------------------------------------------------------------

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
[Notice 94-009]

 

Invention Available for Licensing

AGENCY: National Aeronautics and Space Administration.

ACTION: Notice of availability for licensing.

-----------------------------------------------------------------------

SUMMARY: The invention listed below is owned by an agency of the U.S. 
Government and is available for licensing in the U.S. in accordance 
with 35 U.S.C. 207 to achieve expeditious commercialization of results 
of federally funded research and development.
    U.S. Patent Application Number 08/141,294, filed October 19, 1993, 
and entitled ``Optical Flameout Detector''--The present invention 
relates in general to flameout detectors for monitoring the presence of 
a flame and more particularly to an optical-based flameout detector.
    An optical flameout device according to the invention monitors the 
presence of a flame within a combustion chamber. The optical flameout 
detection system responds to gross changes in combustor light 
intensity, which are monitored in two spectral bands. A photomultiplier 
tube makes optical measurements in the ultraviolet portion of the 
spectrum, and a silicon photodiode covers the visible region. The 
detectors, located outside the combustion chamber, receive the light 
energy radiated from the combustion process through fiber optic probes 
designed to operate in a high pressure environment. The optical fibers 
are aimed diagonally through the center of the injector at the 
combustion chamber wall downstream of the injector. The probed observe 
events occurring within a narrow conical-shaped field of view so that 
the system can quickly detect longitudinal movement of the flame front 
away from the injector. If a change in intensity of the flame is 
detected, the fuel supply to the combustion chamber is shut off, 
limiting the amount of unburned fuel in the combustion chamber which 
could reignite.
    The invention claimed in this patent application is available for 
licensing on an exclusive, partially exclusive or nonexclusive basis 
for upfront, running and annual minimum royalty payments to a partner 
committed to commercializing this technology.

ADDRESSES: Licensing information and a copy of the U.S. Patent 
Application (without the claims) may be obtained by writing to Kimberly 
A. Chasteen at the Office of Patent Counsel, Mail Stop 143, NASA 
Langley Research Center, Hampton, VA 23681-0001 (telephone (804) 864-
3227, fax (804) 864-8298). Please note the case number, LAR-14, 997-1, 
when requesting information.

    Dated: January 28, 1994.
Edward A. Frankle,
General Counsel.
[FR Doc. 94-2531 Filed 2-3-94; 8:45 am]
BILLING CODE 7510-01-M