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US Post WWII Interceptor Story
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<blockquote data-quote="Antonio" data-source="post: 769" data-attributes="member: 20"><p>This is a brief USAF post-WWII Interceptor story classified by chronological order.</p><p></p><p>Please send your comments about mistakes or additions. Thanks a lot!</p><p></p><p>Antonio</p><p></p><p>March 1945</p><p>Project MX-808. Night Fighter/All Weather Interceptor</p><p>Curtiss Model 29A and Northrop Model N-24 selected for development</p><p>Curtiss XP-87 fell from favor and Norhrop XP-89 went on.</p><p></p><p></p><p>September 1945</p><p>Project MX-813</p><p>Supersonic Day Fighter Interceptor</p><p>Role: save US Cities from enemy bombers dropping nuclear weapons</p><p>Convair Model 7 XP-92</p><p></p><p></p><p>December 1945</p><p>Project MX-909</p><p>Very high speed, very high altitude interceptor</p><p>Role: interception of high performance bombers</p><p>Republic AP-31 XP-91</p><p></p><p>May 1946</p><p>Model 7 at wind tunnel resulted in disappointing results. A new delta configuration was suggested by Dr. Alexander Lippisch.</p><p>Revised design shown promising performance.</p><p></p><p>November 1946</p><p>XF-92A</p><p>Model 7-002 new design, delta wing, powerplant: GE33 turbojet.</p><p>Mach 1,25 expected but only Mach 1,1 capable in a dive.</p><p>Afterburner installed in 1951</p><p>Development cancelled.</p><p></p><p>June 1948</p><p>Lockheed YF-94 Starfire ordered as the Interim All Weather Fighter Interceptor to fill the gap while F-89 was in its development stages.</p><p></p><p>July 1948</p><p>XF-89 First Flight</p><p></p><p>March 1949</p><p>North American Model NA-164 all weather fighter interceptor offered to USAAF. Despite several interceptors were in development at that time, the design was ordered as YF-95A (later redesignated as YF-86D.</p><p></p><p>May 1949</p><p>First Flight. Rocket was not available so it was flown with turbojet only.</p><p>Redesignated XF-91 Thunderceptor</p><p></p><p>June 1949</p><p>Project 1954 Interceptor, WS201A MX-1554-MX1179</p><p>Considered the ultimate interceptor.</p><p>Role: save US Cities from enemy bombers dropping nuclear weapons</p><p>Contender designs:</p><p>Convair model 8 Powerplant: Wright J57 afterburning turbojet</p><p>Lockheed TDN L-205 Model 99</p><p>Republic AP-57</p><p>Convair designated winner Model 8 gets YF-102 designation</p><p>Republic AP-57 wins also a contract for development under WS304A and gets XF-103 Thunderwarrior designation</p><p></p><p>1949</p><p>Project GAPA (Ground to Air Pilotless Aircraft). A Boeing study for a point interceptor is developed into a robot interceptor capable of destroy targets at ranges of hundred kilometers. </p><p></p><p>1950</p><p>Advanced YF-89F and YF-89G Scorpion variants cancelled.</p><p></p><p>November 1951</p><p>Long Range Interceptor variant studied for the B-58</p><p></p><p>1951</p><p>GAPA Ordered under designation XF-99 BOMARC.</p><p></p><p>1952</p><p>B-47 Very Long Range Interceptor study (A B-47 armed with dozens of AAM) led to the start of the LRI-X program</p><p></p><p>1952</p><p>McDonnell F-109. F-101A Interceptor version offered to as an interim all weather interceptor (WS-217) due to delays in the F-102 development. It was considered for the LRI role too. Later redesignated F-101B.</p><p></p><p>1952</p><p>XF-91A and B versions Thunderceptor cancelled because F-102 then in development had better performance.</p><p></p><p>February 1953</p><p>Northrop starts series of LRI-X studies starting with Delta Scorpion design (F-89D with delta wing)</p><p></p><p>May 1953</p><p>Northrop N-126 to LRI-X. Three designs: F-89D delta evolution, N-126A and N-126B</p><p></p><p>January 1953</p><p>Air Defense Command Request MRI-X (Medium Range Interceptor Experimental) for F101 and F102 replacement by october 1959. Cancelled</p><p></p><p>October 1953</p><p>Convair 8-80 (YF-102) First Flight</p><p></p><p>November 1953</p><p>Convair B-58 Hustler Interceptor variant to LRI-X</p><p></p><p>June 1954</p><p>Northrop LRI-X studies: Revised N-126 and N-144</p><p></p><p>June 1955</p><p>Convair F-102A delivered as an interim type until the definitive F-102B could be ready.</p><p></p><p>October 1955</p><p>LRI-X formaly issued: GOR 114. Proposals from Lockheed (CL-288 and CL-320) and Convair (B-58 derivative).</p><p></p><p>February 1956</p><p>Northrop LRI-X studies: N-167 and last submission, the N-176.</p><p></p><p>February 1956</p><p>North American wins LRI-X with its NA-236 design but the project is cancelled.</p><p></p><p>December 1956.</p><p>Convair Model 8-24 First Flight. F-102B, the ultimate 1954 Interceptor is redesignated F-106.</p><p></p><p>March 1957</p><p>LRI-X reinstated under WS 202A. Instead asking for new proposals, the NA-236 is reaffirmed. Revised design, NA-257 is ordered as XF-108 Rapier. Operational expected date by 1962.</p><p></p><p>May 1958</p><p>Convair F-106C tested but cancelled.</p><p></p><p>September 1959</p><p>North American XF-108 Rapier cancelled. It seems that USAF was impresed with an AF-12 Blackbird interceptor offer from Lockheed.</p><p></p><p>January 1959</p><p>IM-99B Bomarc offered to RCAF as an F-105 Arrow replacement ordered for USAF.</p><p></p><p>February 1959</p><p>Long Range Interceptor B-58C derivative studied at Convair</p><p></p><p>August 1959</p><p>North American Retaliator (A-5 Vigilante derivative) offered to USAF as an interceptor.</p><p></p><p>March 1960</p><p>Lockheed starts work on AF-12 IMI (Improved Manned Interceptor) for F101, F102 and F106 replacement (Suggested designation YF-112)</p><p></p><p>March 1960</p><p>North American Retaliator offered to IMI</p><p></p><p>Between 1960 and 1961</p><p>Convair studied a B-58D Long Range Interceptor derivative.</p><p></p><p>March 1962</p><p>Lockheed AF-12 is designated YF-12A</p><p></p><p>May 1965</p><p>Lockheed production model F-12B is ordered.</p><p></p><p>1967</p><p>Vought V-504 offered to IMI</p><p></p><p>February 1968</p><p>F-12B Cancelled.</p><p></p><p>February 1968</p><p>Convair F-106X offered as a low cost IMI alternative. Rejected.</p><p></p><p>September 1968</p><p>Convair F-106E/F offered as a low cost IMI alternative (less ambitious than F-106X). Rejected.</p><p></p><p>August 1971</p><p>North American NR-349 (an A-5 evolution), Grumman F-111X-7 (Interceptor variant), Grumman F-14 (USAF IMI variant) and McDonnell F-15 (IMI variant) were the latest contenders.</p><p></p><p>1973</p><p>Program IMI cancelled.</p><p></p><p>The last dedicated USAF interceptor was F106 until it was replaced by F-15A beginning during the early-1980s.</p><p></p><p></p><p>Sources:</p><p></p><p>Books</p><p>X-Fighters. Steve Pace. Motorbooks International. 1991. ISBN 0-87938-540-5.</p><p>Lockheed Skunk Works. Jay Miller. Aerofax. 1993. ISBN 0-942548-56-6</p><p>McDonnell Douglas F-15 Eagle. Dennis R. Jenkins. Aerofax. 1990. ISBN 0-942548-44-2</p><p>Magazines</p><p>F-108 Rapier. D. Jenkins and T. Landis. Airpower September 2004</p><p>Playing the proposal game. Joe Mizrahi with collaboration from Dr Ira Chart. Wings 1989.</p></blockquote><p></p>
[QUOTE="Antonio, post: 769, member: 20"] This is a brief USAF post-WWII Interceptor story classified by chronological order. Please send your comments about mistakes or additions. Thanks a lot! Antonio March 1945 Project MX-808. Night Fighter/All Weather Interceptor Curtiss Model 29A and Northrop Model N-24 selected for development Curtiss XP-87 fell from favor and Norhrop XP-89 went on. September 1945 Project MX-813 Supersonic Day Fighter Interceptor Role: save US Cities from enemy bombers dropping nuclear weapons Convair Model 7 XP-92 December 1945 Project MX-909 Very high speed, very high altitude interceptor Role: interception of high performance bombers Republic AP-31 XP-91 May 1946 Model 7 at wind tunnel resulted in disappointing results. A new delta configuration was suggested by Dr. Alexander Lippisch. Revised design shown promising performance. November 1946 XF-92A Model 7-002 new design, delta wing, powerplant: GE33 turbojet. Mach 1,25 expected but only Mach 1,1 capable in a dive. Afterburner installed in 1951 Development cancelled. June 1948 Lockheed YF-94 Starfire ordered as the Interim All Weather Fighter Interceptor to fill the gap while F-89 was in its development stages. July 1948 XF-89 First Flight March 1949 North American Model NA-164 all weather fighter interceptor offered to USAAF. Despite several interceptors were in development at that time, the design was ordered as YF-95A (later redesignated as YF-86D. May 1949 First Flight. Rocket was not available so it was flown with turbojet only. Redesignated XF-91 Thunderceptor June 1949 Project 1954 Interceptor, WS201A MX-1554-MX1179 Considered the ultimate interceptor. Role: save US Cities from enemy bombers dropping nuclear weapons Contender designs: Convair model 8 Powerplant: Wright J57 afterburning turbojet Lockheed TDN L-205 Model 99 Republic AP-57 Convair designated winner Model 8 gets YF-102 designation Republic AP-57 wins also a contract for development under WS304A and gets XF-103 Thunderwarrior designation 1949 Project GAPA (Ground to Air Pilotless Aircraft). A Boeing study for a point interceptor is developed into a robot interceptor capable of destroy targets at ranges of hundred kilometers. 1950 Advanced YF-89F and YF-89G Scorpion variants cancelled. November 1951 Long Range Interceptor variant studied for the B-58 1951 GAPA Ordered under designation XF-99 BOMARC. 1952 B-47 Very Long Range Interceptor study (A B-47 armed with dozens of AAM) led to the start of the LRI-X program 1952 McDonnell F-109. F-101A Interceptor version offered to as an interim all weather interceptor (WS-217) due to delays in the F-102 development. It was considered for the LRI role too. Later redesignated F-101B. 1952 XF-91A and B versions Thunderceptor cancelled because F-102 then in development had better performance. February 1953 Northrop starts series of LRI-X studies starting with Delta Scorpion design (F-89D with delta wing) May 1953 Northrop N-126 to LRI-X. Three designs: F-89D delta evolution, N-126A and N-126B January 1953 Air Defense Command Request MRI-X (Medium Range Interceptor Experimental) for F101 and F102 replacement by october 1959. Cancelled October 1953 Convair 8-80 (YF-102) First Flight November 1953 Convair B-58 Hustler Interceptor variant to LRI-X June 1954 Northrop LRI-X studies: Revised N-126 and N-144 June 1955 Convair F-102A delivered as an interim type until the definitive F-102B could be ready. October 1955 LRI-X formaly issued: GOR 114. Proposals from Lockheed (CL-288 and CL-320) and Convair (B-58 derivative). February 1956 Northrop LRI-X studies: N-167 and last submission, the N-176. February 1956 North American wins LRI-X with its NA-236 design but the project is cancelled. December 1956. Convair Model 8-24 First Flight. F-102B, the ultimate 1954 Interceptor is redesignated F-106. March 1957 LRI-X reinstated under WS 202A. Instead asking for new proposals, the NA-236 is reaffirmed. Revised design, NA-257 is ordered as XF-108 Rapier. Operational expected date by 1962. May 1958 Convair F-106C tested but cancelled. September 1959 North American XF-108 Rapier cancelled. It seems that USAF was impresed with an AF-12 Blackbird interceptor offer from Lockheed. January 1959 IM-99B Bomarc offered to RCAF as an F-105 Arrow replacement ordered for USAF. February 1959 Long Range Interceptor B-58C derivative studied at Convair August 1959 North American Retaliator (A-5 Vigilante derivative) offered to USAF as an interceptor. March 1960 Lockheed starts work on AF-12 IMI (Improved Manned Interceptor) for F101, F102 and F106 replacement (Suggested designation YF-112) March 1960 North American Retaliator offered to IMI Between 1960 and 1961 Convair studied a B-58D Long Range Interceptor derivative. March 1962 Lockheed AF-12 is designated YF-12A May 1965 Lockheed production model F-12B is ordered. 1967 Vought V-504 offered to IMI February 1968 F-12B Cancelled. February 1968 Convair F-106X offered as a low cost IMI alternative. Rejected. September 1968 Convair F-106E/F offered as a low cost IMI alternative (less ambitious than F-106X). Rejected. August 1971 North American NR-349 (an A-5 evolution), Grumman F-111X-7 (Interceptor variant), Grumman F-14 (USAF IMI variant) and McDonnell F-15 (IMI variant) were the latest contenders. 1973 Program IMI cancelled. The last dedicated USAF interceptor was F106 until it was replaced by F-15A beginning during the early-1980s. Sources: Books X-Fighters. Steve Pace. Motorbooks International. 1991. ISBN 0-87938-540-5. Lockheed Skunk Works. Jay Miller. Aerofax. 1993. ISBN 0-942548-56-6 McDonnell Douglas F-15 Eagle. Dennis R. Jenkins. Aerofax. 1990. ISBN 0-942548-44-2 Magazines F-108 Rapier. D. Jenkins and T. Landis. Airpower September 2004 Playing the proposal game. Joe Mizrahi with collaboration from Dr Ira Chart. Wings 1989. [/QUOTE]
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