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    기술보고서 게시판 내용
    타이틀 Design and Fabrication of a Tank-Applied Broad Area Cooling Shield Coupon
    저자 Wood, J. J.;; Middlemas, M. R.
    Keyword ACOUSTIC SIMULATION;; ALUMINUM;; COOLING;; CRYOGENIC FLUID STORAGE;; CRYOGENIC ROCKET PROPELLANTS;; CRYOGENIC TANKS;; FABRICATION;; FOAMS;; HEAT EXCHANGERS;; LEAKAGE;; MICROGRAVITY;; MULTILAYER INSULATION;; PANELS;; PROPELLANT TRANSFER;; SHIELDING;; STORAGE TANKS;; TEST FACILITIES
    URL http://hdl.handle.net/2060/20130000537
    보고서번호 NASA/CR-2012-217472
    발행년도 2012
    출처 NTRS (NASA Technical Report Server)
    ABSTRACT The small-scale broad area cooling (BAC) shield test panel represents a section of the cryogenic propellant storage and transfer ground test article, a flight-like cryogenic propellant storage tank. The test panel design includes an aluminum tank shell, primer, spray-on foam insulation, multilayer insulation (MLI), and BAC shield hardware. This assembly was sized to accurately represent the character of the MLI/BAC shield system, be quickly and inexpensively assembled, and be tested in the Marshall Space Flight Center Acoustic Test Facility. Investigating the BAC shield response to a worst-case launch dynamic load was the key purpose for developing the test article and performing the test. A preliminary method for structurally supporting the BAC shield using low-conductivity standoffs was designed, manufactured, and evaluated as part of the test. The BAC tube-standoff interface and unsupported BAC tube lengths were key parameters for evaluation. No noticeable damage to any system hardware element was observed after acoustic testing.

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