The use of helium bubbles as a pogo fix in launch vehicle propellant lines.
Gaseous He bubbles injection into liquid propellant launch vehicle fuel lines to reduce vehicle pogo oscillations by lowering feed system natural frequencies
Hanks, B. R.↗
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Results for “Feed systems”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Forced and self-excited oscillations in propellant lines.
Rocket engines propellant feed systems dynamics analyzed by model using linear methods with distributed-parameter pipe representation
Keller, R. B.↗
Quantifying and improving Manned Orbiting Laboratory food
Human factors and standardization of food item selection for Manned Orbiting Laboratory feeding system
Flentge, R. L.↗
Apollo applications program requirements
Requirements for Apollo Applications Program feeding system
Rambaut, P. C.↗
Airline versus space feeding
Airline and space feeding systems, and work-rest division of astronauts day
Buck, P. A.↗
Long-term space mission requirements
Possible feeding systems for long term space missions after Apollo Applications Program
Huber, C. S.↗
Development of non-cream style soups Final report
Noncream style dehydrated soups for use in Apollo feeding system
Larson, R. W.↗
Helium injection to reduce resonant frequencies in propellant lines
Gaseous He bubbles injection into liquid propellant launch vehicle fuel lines to reduce vehicle pogo oscillations by lowering feed system natural frequencies
Hanks, B. R.↗
S-IVB restart chilldown experience
S-IVB liquid rocket engine and propellant feed systems restart chilldown in orbital operations
Davisson, J. C.↗
Fluid dispensing apparatus and method Patent
Method and feed system for separating and orienting liquid and vapor phases of liquid propellants in zero gravity environment
Papell, S. S.↗
Application of radioactive tracer techniques to flow decay problems Final interim report, 26 Mar. - 26 Oct. 1970
Applying radioactive tracer techniques to detection of metal contaminants within components of propellant feed system
Pullen, K. E.↗
Curved permeable wall induction torch tests
Laboratory tests on induction plasma torch with curved permeable walls and solid feed system
Vogel, C. E.↗
Status of a five-centimeter-diameter ion thruster technology program
Prototype auxiliary propulsion subsystem with isolated single tank propellant feed system and 5-cm-diameter ion thruster
Banks, B. A.↗
S-IVB restart chilldown experience
S-IVB liquid rocket engine and propellant feed systems restart chilldown in orbital operations
Davisson, J. C.↗
Radioactive nondestructive test method
Various radioisotope techniques were used as diagnostic tools for determining the performance of spacecraft propulsion feed system elements. Applications were studied in four tasks. The first two required experimental testing involving the propellant liquid oxygen difluoride (OF2): the neutron activation analysis of dissolved or suspended metals, and the use of radioactive tracers to evaluate the probability of constrictions in passive components (orifices and filters) becoming clogged by matter dissolved or suspended in the OF2. The other tasks were an appraisal of the applicability of radioisotope techniques to problems arising from the exposure of components to liquid/gas combinations, and an assessment of the applicability of the techniques to other propellants.
Obrien, J. R.↗
Experimental findings from zero-tank net positive suction head operation of the J-2 hydrogen pump
The results of a series of liquid hydrogen turbopump tests to demonstrate the feasibility of zero-tank net positive suction head are presented. A J-2 engine hydrogen pump and S-IVB stage fuel feed system were used for this investigation. The pump was operated at flows and speeds equivalent to normal J-2 engine operating conditions and at hydrogen bulk temperatures between 39 and 45 R. These tests show zero-tank not positive suction head to be a realistic operating mode that should be considered for future applications.
Stinson, H. P.↗
Dual frequency microwave reflex feed
A dual frequency feed system for a Cassegrainian antenna is provided wherein two frequencies may be transmitted along a single boresight or received simultaneously using a single antenna.
Bathker, D. A.↗
Extendible rocket nozzle development
An evaluation is presented of J-2 engine modifications that will simplify operation and improve reliability of the advanced Saturn 1C launch vehicle. Methods of increasing thrust without extensively modifying the S-2 or S-4B stages are also evaluated. A thrust increase was achieved by raising engine combustion through a redesign of the engine thrust chamber and propellant feed system.
Pryor, D.↗