NASA Scientific and Technical Aerospace Reports

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PROPELLANTS AND FUELS
Includes rocket propellants, igniters, and oxidizers; their storage and handling procedures; and aircraft fuels. For nuclear fuels see 73
Nuclear Physics. For related information see also 07 Aircraft Propulsion and Power; 20 Spacecraft Propulsion and Power; and 44
Energy Production and Conversion.
20040073823 Air Force Inst. of Tech., Wright-Patterson AFB, OH
Analysis of Air Force Compliance with Executive Order 13149
Kirkwood, John C.; Mar. 23, 2004; 74 pp.; In English; Original contains color illustrations
Report No.(s): AD-A422876; AFIT/GLM/ENS/04-09; No Copyright; Avail: CASI; A04, Hardcopy
The Air Force must comply with Executive Order (E. 0.) 13149: Greening The Government Through Federal Fleet and
Transportation Efficiency. This order focuses on the reduction of petroleum consumption in an effort to reduce dependence on
foreign oil and preserve the environment. Specifically, it directs federal agencies (such as the Air Force) to reduce fuel use
in the vehicle fleet 20 percent between Fiscal Years (FY) 1999 and 2005. This thesis examines the Air Force’s current
alternative fuel vehicle (AFV) program and its evolution to determine how effective it is and how it should be adjusted to
promote compliance with E.O. 13149. The results of this thesis look at steps that the Air Force should consider in an effort
to increase the program’s impact on petroleum consumption. Analysis shows that the Air Force is working to adopt new
technology. However, the availability of such technology in a timely fashion may make it difficult for the Air Force to meet
the 2005 goal. Additionally, in instances where the technology is currently available, alternative fuel and the appropriate
refueling infrastructure frequently are not. Finding the financial resources to support these improvements would greatly
improve the effectiveness of the Air Force’s program.
DTIC
Automobile Fuels; Natural Gas
20040074170 Tulane Univ., New Orleans, LA, USA
Small Signal Modeling and Control of the Hydrogen Mixer for Facility E1
Barbieri, Enrique; August 10, 2001; 19 pp.; In English
Report No.(s): NASA/NP-2002-02-00005-SSC; No Copyright; Avail: CASI; A03, Hardcopy
We have undertaken the theoretical modelling of an existing liquid hydrogen (LH2) and gas hydrogen (GH2) mixer
subsystem of the E1 Ground Test Facility at NASA John C. Stennis Space Center. The E1 test facility carries out
comprehensive ground-based testing and certification of various liquid rocket engines and their components. The mixer
described in this work is responsible for combining high pressure before it is fed into a test article. The desired properties are
maintained by precise control of the mixture of LH2 and GH2 flows. The mixer is modelled as a general multi-flow lumped
volume for single constituent fluids using density and internal energy as states. The set of nonlinear differential equations is
linearized about an equilibrium point and the resulting two-state, 3-input linear model is analyzed as a possible candidate for
control design.
Author
Liquid Propellant Rocket Engines; Test Facilities; Mathematical Models; Control Systems Design; Liquid Hydrogen
29
SPACE PROCESSING
Includes space-based development of materials, compounds, and processes for research or commercial application. Also includes the
development of materials and compounds in simulated reduced-gravity environments. For legal aspects of space commercialization see
84 Law, Political Science and Space Policy.
20040070739 Life Systems, Inc., Cleveland, OH, USA
Space Water Electrolysis: Space Station Through Advanced Missions
Davenport, Ronald J.; Schubert, Franz H.; Space Electrochemical Research and Technology: Abstracts; [1991], pp. 7; In
English; See also 20040070726; No Copyright; Available from CASI only as part of the entire parent document
Static Feed Electrolysis technology has long been recognized as being important in meeting the National Aeronautics and
Space Administration’s requirements for life support within the Space Station Freedom Program and future, advanced
missions. The Static Feed Electrolysis technology makes it possible to very efficiently generate oxygen to sustain the crew,
and hydrogen for the efficient and economical operation of other space systems. More recently, additional applications for the
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