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- Lockheed_CL-400_Suntan abstract "Suntan was the code-name of a prototype reconnaissance aircraft program, with the goal of creating a much faster and higher-altitude successor to the U-2, enabled by the use of liquid hydrogen (LH2) as aircraft fuel. The program was cancelled in 1958.Starting in 1956, the United States Air Force funded a highly secretive program of research and development on high-speed aircraft for long-range reconnaissance. Lockheed's Skunk Works was the natural partner for this work, having successfully delivered the U-2 and having all the required secrecy and security arrangements to keep the program secret.Lockheed settled on the CL-400 design, which looked like a greatly scaled-up Lockheed F-104 Starfighter. The main change to the layout were the twin engines, mounted on the wing tips. LH2 was selected due to its predictable burning characteristics and the fuel's light weight, although the low density required the enormous fuselage to hold the required fuel load. In addition to Lockheed, Pratt and Whitney played a major part.Program successes included the concept design of a Mach 2.5 aircraft capable of flying at 30,000 meters, and successful conversion of an existing turbojet engine to run on liquid hydrogen, as well as 25+ hours of testing on a customized LH2 engine design. Techniques for handling LH2 on the ground, including making the fuel, transporting and rapid refuelling systems, were all developed as part of the program.Ultimately, budgetary pressures and difficulty achieving sufficient range, plus the fact that an LH2-powered aircraft was considered too dangerous and expensive to maintain led to the project's cancellation. In addition, the unusual fuel would have meant that existing airbases would have needed extensive facilities to handle the aircraft.However, the aircraft research was redirected to more conventionally fueled designs and resulted in the successful SR-71. By advancing the state of the art in LH2 propulsion, and by establishing an industrial infrastructure for high-volume hydrogen production, the groundwork was laid for successful use of liquid hydrogen as a Liquid rocket propellant for the Apollo program and the Space Shuttle.The existence of the CL-400 was not fully disclosed to the public until the 1970s, when Lockheed discussed the possibility of using hydrogen as an alternative fuel for future aircraft.".
- Lockheed_CL-400_Suntan designer Kelly_Johnson_(engineer).
- Lockheed_CL-400_Suntan manufacturer Lockheed_Corporation.
- Lockheed_CL-400_Suntan type Reconnaissance.
- Lockheed_CL-400_Suntan wikiPageExternalLink ch8-1.htm.
- Lockheed_CL-400_Suntan wikiPageID "3780873".
- Lockheed_CL-400_Suntan wikiPageLength "4142".
- Lockheed_CL-400_Suntan wikiPageOutDegree "30".
- Lockheed_CL-400_Suntan wikiPageRevisionID "678708815".
- Lockheed_CL-400_Suntan wikiPageWikiLink Aircraft.
- Lockheed_CL-400_Suntan wikiPageWikiLink Aircraft_fuel.
- Lockheed_CL-400_Suntan wikiPageWikiLink Apollo_program.
- Lockheed_CL-400_Suntan wikiPageWikiLink Aviation_fuel.
- Lockheed_CL-400_Suntan wikiPageWikiLink Bristol_188.
- Lockheed_CL-400_Suntan wikiPageWikiLink Category:Black_projects.
- Lockheed_CL-400_Suntan wikiPageWikiLink Category:Cancelled_military_aircraft_projects_of_the_United_States.
- Lockheed_CL-400_Suntan wikiPageWikiLink Category:Hydrogen-powered_aircraft.
- Lockheed_CL-400_Suntan wikiPageWikiLink Category:Lockheed_aircraft.
- Lockheed_CL-400_Suntan wikiPageWikiLink Clarence_Johnson.
- Lockheed_CL-400_Suntan wikiPageWikiLink Code-name.
- Lockheed_CL-400_Suntan wikiPageWikiLink Code_name.
- Lockheed_CL-400_Suntan wikiPageWikiLink Kelly_Johnson_(engineer).
- Lockheed_CL-400_Suntan wikiPageWikiLink Liquid_hydrogen.
- Lockheed_CL-400_Suntan wikiPageWikiLink Liquid_rocket_propellant.
- Lockheed_CL-400_Suntan wikiPageWikiLink Lockheed_Corporation.
- Lockheed_CL-400_Suntan wikiPageWikiLink Lockheed_F-104_Starfighter.
- Lockheed_CL-400_Suntan wikiPageWikiLink Lockheed_SR-71_Blackbird.
- Lockheed_CL-400_Suntan wikiPageWikiLink Lockheed_U-2.
- Lockheed_CL-400_Suntan wikiPageWikiLink Mach_number.
- Lockheed_CL-400_Suntan wikiPageWikiLink Meter.
- Lockheed_CL-400_Suntan wikiPageWikiLink Metre.
- Lockheed_CL-400_Suntan wikiPageWikiLink Pratt_&_Whitney.
- Lockheed_CL-400_Suntan wikiPageWikiLink Pratt_and_Whitney.
- Lockheed_CL-400_Suntan wikiPageWikiLink Prototype.
- Lockheed_CL-400_Suntan wikiPageWikiLink Reaction_Engines_A2.
- Lockheed_CL-400_Suntan wikiPageWikiLink Reaction_Engines_Skylon.
- Lockheed_CL-400_Suntan wikiPageWikiLink Reconnaissance.
- Lockheed_CL-400_Suntan wikiPageWikiLink SR-71.
- Lockheed_CL-400_Suntan wikiPageWikiLink Skunk_Works.
- Lockheed_CL-400_Suntan wikiPageWikiLink Skylon_(spacecraft).
- Lockheed_CL-400_Suntan wikiPageWikiLink Space_Shuttle.
- Lockheed_CL-400_Suntan wikiPageWikiLink Turbojet.
- Lockheed_CL-400_Suntan wikiPageWikiLink United_States_Air_Force.
- Lockheed_CL-400_Suntan wikiPageWikiLinkText "CL-400 Suntan".
- Lockheed_CL-400_Suntan wikiPageWikiLinkText "Lockheed CL-400 Suntan".
- Lockheed_CL-400_Suntan wikiPageWikiLinkText "Project Suntan".
- Lockheed_CL-400_Suntan wikiPageWikiLinkText "Suntan".
- Lockheed_CL-400_Suntan designer Clarence_Johnson.
- Lockheed_CL-400_Suntan designer Kelly_Johnson_(engineer).
- Lockheed_CL-400_Suntan hasPhotoCollection Lockheed_CL-400_Suntan.
- Lockheed_CL-400_Suntan manufacturer Lockheed_Corporation.
- Lockheed_CL-400_Suntan type "Proposed reconnaissance aircraft".
- Lockheed_CL-400_Suntan wikiPageUsesTemplate Template:Infobox_Aircraft_Type.
- Lockheed_CL-400_Suntan wikiPageUsesTemplate Template:Lockheed.
- Lockheed_CL-400_Suntan wikiPageUsesTemplate Template:More_footnotes.
- Lockheed_CL-400_Suntan wikiPageUsesTemplate Template:Reflist.
- Lockheed_CL-400_Suntan subject Category:Black_projects.
- Lockheed_CL-400_Suntan subject Category:Cancelled_military_aircraft_projects_of_the_United_States.
- Lockheed_CL-400_Suntan subject Category:Hydrogen-powered_aircraft.
- Lockheed_CL-400_Suntan subject Category:Lockheed_aircraft.
- Lockheed_CL-400_Suntan type Aircraft.
- Lockheed_CL-400_Suntan type Article.
- Lockheed_CL-400_Suntan type MeanOfTransportation.
- Lockheed_CL-400_Suntan type Article.
- Lockheed_CL-400_Suntan type Program.
- Lockheed_CL-400_Suntan type Vehicle.
- Lockheed_CL-400_Suntan type Product.
- Lockheed_CL-400_Suntan type DesignedArtifact.
- Lockheed_CL-400_Suntan type Thing.
- Lockheed_CL-400_Suntan type Q11436.
- Lockheed_CL-400_Suntan comment "Suntan was the code-name of a prototype reconnaissance aircraft program, with the goal of creating a much faster and higher-altitude successor to the U-2, enabled by the use of liquid hydrogen (LH2) as aircraft fuel. The program was cancelled in 1958.Starting in 1956, the United States Air Force funded a highly secretive program of research and development on high-speed aircraft for long-range reconnaissance.".
- Lockheed_CL-400_Suntan label "Lockheed CL-400 Suntan".
- Lockheed_CL-400_Suntan sameAs Lockheed_CL-400_Suntan.
- Lockheed_CL-400_Suntan sameAs m.09_mgx.
- Lockheed_CL-400_Suntan sameAs Q6665548.
- Lockheed_CL-400_Suntan sameAs Q6665548.
- Lockheed_CL-400_Suntan wasDerivedFrom Lockheed_CL-400_Suntan?oldid=678708815.
- Lockheed_CL-400_Suntan isPrimaryTopicOf Lockheed_CL-400_Suntan.