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Record 1 of 1629
Prospects for utilization of air liquefaction and enrichment system (ALES) propulsion in fully reusable launch vehicles
Author and Affiliation:
Bond, W. H.(NASA Lewis Research Center, Cleveland, OH, United States)
Yi, A. C.(Rockwell International Corp., Space Systems Div., Downey, CA, United States)
Abstract: A concept is shown for a fully reusable, earth to orbit launch vehicle with horizontal takeoff and landing, employing an air-turborocket for low speed and a rocket for high speed acceleration, both using LH2 fuel. The turborocket employs a modified liquid air cycle to supply the oxidizer. The rocket uses 90 percent pure LOX that is collected from the atmosphere, separated, and stored during operation of the turborocket from about Mach 2 to Mach 5 or 6. The takeoff weight and the thrust required at takeoff are markedly reduced by collecting the rocket oxidizer in-flight. The paper shows an approach and the corresponding technology needs for using ALES propulsion in a SSTO vehicle. Reducing the trajectory altitude at the end of collection reduces the wing area and increases payload. The use of state-of-the-art materials, such as graphite polyimide, is critical to meet the structure weight objective for SSTO. Configurations that utilize 'waverider' aerodynamics show great promise to reduce the vehicle weight.
Publication Date: Jun 01, 1993
Document ID:
19930065864
(Acquired Dec 28, 1995)
Accession Number: 93A49861
Subject Category: SPACECRAFT PROPULSION AND POWER
Report/Patent Number: AIAA PAPER 93-2025
Document Type: Preprint
Publication Information: 15 p.
Publisher Information: United States
Meeting Information: AIAA, SAE, ASME, and ASEE, Joint Propulsion Conference and Exhibit; 29th; June 28-30, 1993; Monterey, CA; United States
Meeting Sponsor: AIAA;
SAE;
ASME;
ASEE
Financial Sponsor: NASA; United States
Organization Source: NASA Lewis Research Center; Cleveland, OH, United States
Description: 15p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: HYDROGEN OXYGEN ENGINES; LIQUID PROPELLANT ROCKET ENGINES; MACH NUMBER; PROPULSION SYSTEM CONFIGURATIONS; REUSABLE LAUNCH VEHICLES; SINGLE STAGE TO ORBIT VEHICLES; ALUMINUM-LITHIUM ALLOYS; EARTH ORBITAL ENVIRONMENTS; GRAPHITE-POLYIMIDE COMPOSITES; WEIGHT REDUCTION
Imprint And Other Notes: AIAA, SAE, ASME, and ASEE, Joint Propulsion Conference and Exhibit, 29th, Monterey, CA, June 28-30, 1993
Miscellaneous Notes: Research sponsored by NASA and USAF
Availability Source: Other Sources
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