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- Aerospaceplane abstract "The US Air Force's aerospaceplane project encompassed a variety of projects from 1958 until 1963 to study a fully reusable spaceplane. A variety of designs were studied during the lifetime of the project, including most of the early efforts on liquid air cycle engines (LACE) and even a nuclear-powered ramjet.The effort was started largely due to the work of Weldon Worth at the Wright-Patterson AFB, who published a short work outlining a manned spaceplane. AF officials were interested enough to start SR-89774 (study requirement-) for a reusable spaceplane in 1957. By 1959 this work had resulted in the Recoverable Orbital Launch System, or ROLS, based around a LACE engine, known at the time as a Liquid Air Collection System, or LACES.Further work showed that more performance could be gained by extracting only the oxygen from the liquid air, a system they referred to as Air Collection and Enrichment System, or ACES. A contract to develop an ACES testbed was placed with Marquardt and General Dynamics, with Garrett AiResearch building the heat exchanger for cooling the air. The original ACES design was fairly complex; the air was first liquified in the heat exchanger cooled by liquid hydrogen fuel, then pumped into a low pressure tank for short term storage. From there it was then pumped into a high pressure tank where the oxygen was separated and the rest (mostly nitrogen) was dumped overboard. In late 1960 and early 1961 a 125 N demonstrator engine was being operated for up to five minutes at a time.In early 1960 Air Force offered a development contract to build a spaceplane with a crew of three that could take off from any runway and fly directly into orbit and return. They wanted the design to be in operation in 1970 for a total development cost of only $5 billion. Boeing, Douglas, Convair, Lockheed, Goodyear, North American, and Republic all responded. Most of these designs ignored the ACES system and instead used a scramjet for power. The scramjet had first been outlined at about the same time as the original LACES design in a NASA paper of 1958, and many companies were highly interested in seeing it develop, perhaps none more than Marquardt, whose ramjet business was dwindling with the introduction of newer jet engines and who had already started work on the scramjet. Both Alexander Kartveli and Antonio Ferri were proponents of the scramjet approach. Ferri successfully demonstrated a scramjet producing net thrust in November 1964, eventually producing 517 lbf, about 80% of his goal.Later that year a review suggested that the basic concepts of the aerospaceplane were far too new for development of an operational system to begin. They pointed out that far too much was being spent on development of the aircraft, and not nearly enough on basic research. Moreover, the designs were all extremely sensitive to weight, and any increase (and there always is one) could result in all of the designs not working. In 1963 the Air Force changed their priorities in SR-651, and focused entirely on development of a variety of high-speed engines. Included were LACES and ACES engines, as well scramjets, turboramjets and a "normal" (subsonic combustion) ramjet with an intake suitable for use up to Mach 8. In October a further review concluded that the technology was simply too new for anyone to predict when any such aerospaceplane could ever be built, and funding was wound down in 1964.".
- Aerospaceplane thumbnail Aerospaceplane.jpg?width=300.
- Aerospaceplane wikiPageExternalLink 1964%20-%200041.html.
- Aerospaceplane wikiPageExternalLink ev2n5.htm.
- Aerospaceplane wikiPageID "2218788".
- Aerospaceplane wikiPageLength "4362".
- Aerospaceplane wikiPageOutDegree "32".
- Aerospaceplane wikiPageRevisionID "678708619".
- Aerospaceplane wikiPageWikiLink Air_turborocket.
- Aerospaceplane wikiPageWikiLink Alexander_Kartveli.
- Aerospaceplane wikiPageWikiLink Antonio_Ferri.
- Aerospaceplane wikiPageWikiLink Boeing.
- Aerospaceplane wikiPageWikiLink Category:Cancelled_military_aircraft_projects_of_the_United_States.
- Aerospaceplane wikiPageWikiLink Category:History_of_aviation.
- Aerospaceplane wikiPageWikiLink Category:Spaceplanes.
- Aerospaceplane wikiPageWikiLink Convair.
- Aerospaceplane wikiPageWikiLink Douglas_Aircraft.
- Aerospaceplane wikiPageWikiLink Douglas_Aircraft_Company.
- Aerospaceplane wikiPageWikiLink Garrett_AiResearch.
- Aerospaceplane wikiPageWikiLink General_Dynamics.
- Aerospaceplane wikiPageWikiLink Goodyear_Tire_and_Rubber_Company.
- Aerospaceplane wikiPageWikiLink Heat_exchanger.
- Aerospaceplane wikiPageWikiLink Liquid_air.
- Aerospaceplane wikiPageWikiLink Liquid_air_cycle_engine.
- Aerospaceplane wikiPageWikiLink Liquid_hydrogen.
- Aerospaceplane wikiPageWikiLink Lockheed_Corporation.
- Aerospaceplane wikiPageWikiLink Mach_number.
- Aerospaceplane wikiPageWikiLink Marquardt_Corporation.
- Aerospaceplane wikiPageWikiLink NASA.
- Aerospaceplane wikiPageWikiLink North_American_Aviation.
- Aerospaceplane wikiPageWikiLink Nuclear_propulsion.
- Aerospaceplane wikiPageWikiLink Ramjet.
- Aerospaceplane wikiPageWikiLink Republic_Aviation.
- Aerospaceplane wikiPageWikiLink Scramjet.
- Aerospaceplane wikiPageWikiLink Spaceplane.
- Aerospaceplane wikiPageWikiLink Testbed.
- Aerospaceplane wikiPageWikiLink Turboramjet.
- Aerospaceplane wikiPageWikiLink US_Air_Force.
- Aerospaceplane wikiPageWikiLink United_States_Air_Force.
- Aerospaceplane wikiPageWikiLink Wright-Patterson_AFB.
- Aerospaceplane wikiPageWikiLink Wright-Patterson_Air_Force_Base.
- Aerospaceplane wikiPageWikiLink File:Aerospaceplane.jpg.
- Aerospaceplane wikiPageWikiLinkText "Aerospaceplane".
- Aerospaceplane wikiPageWikiLinkText "aerospaceplane".
- Aerospaceplane hasPhotoCollection Aerospaceplane.
- Aerospaceplane subject Category:Cancelled_military_aircraft_projects_of_the_United_States.
- Aerospaceplane subject Category:History_of_aviation.
- Aerospaceplane subject Category:Spaceplanes.
- Aerospaceplane type Spaceplane.
- Aerospaceplane comment "The US Air Force's aerospaceplane project encompassed a variety of projects from 1958 until 1963 to study a fully reusable spaceplane. A variety of designs were studied during the lifetime of the project, including most of the early efforts on liquid air cycle engines (LACE) and even a nuclear-powered ramjet.The effort was started largely due to the work of Weldon Worth at the Wright-Patterson AFB, who published a short work outlining a manned spaceplane.".
- Aerospaceplane label "Aerospaceplane".
- Aerospaceplane sameAs m.06wtwl.
- Aerospaceplane sameAs Q13403589.
- Aerospaceplane sameAs Q13403589.
- Aerospaceplane sameAs 航空航天飛機.
- Aerospaceplane wasDerivedFrom Aerospaceplane?oldid=678708619.
- Aerospaceplane depiction Aerospaceplane.jpg.
- Aerospaceplane isPrimaryTopicOf Aerospaceplane.