국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Solar Thermal Upper Stage Liquid Hydrogen Pressure Control Testing and Analytical Modeling
저자	Olsen, A. D.;; Cady, E. C.;; Jenkins, D. S.;; Chandler, F. O.;; Grayson, G. D.;; Lopez, A.;; Hastings, L. J.;; Flachbart, R. H.;; Pedersen, K. W.
Keyword	COMPUTATIONAL FLUID DYNAMICS;; CRYOGENIC FLUID STORAGE;; FEED SYSTEMS;; GAS PRESSURE;; HYDROGEN FUELS;; LIQUID HYDROGEN;; LIQUID ROCKET PROPELLANTS;; MATHEMATICAL MODELS;; MULTILAYER INSULATION;; PRESSURE REGULATORS;; PROPELLANT STORAGE;; SPACE STORAGE;; TECHNOLOGY ASSESSMENT;; TRANSFER ORBITS;; UPPER STAGE ROCKET ENGINES;; VENTING
URL	http://hdl.handle.net/2060/20120015773
보고서번호	NASA/TP-2012-217469
발행년도	2012
출처	NTRS (NASA Technical Report Server)
ABSTRACT	The demonstration of a unique liquid hydrogen (LH2) storage and feed system concept for solar thermal upper stage was cooperatively accomplished by a Boeing/NASA Marshall Space Flight Center team. The strategy was to balance thermodynamic venting with the engine thrusting timeline during a representative 30-day mission, thereby, assuring no vent losses. Using a 2 cubic m ࿧ cubic ft) LH2 tank, proof-of-concept testing consisted of an engineering checkout followed by a 30-day mission simulation. The data were used to anchor a combination of standard analyses and computational fluid dynamics (CFD) modeling. Dependence on orbital testing has been incrementally reduced as CFD codes, combined with standard modeling, continue to be challenged with test data such as this.