List of Air Ministry Specifications - Post 1949 Operational Requirements and Naval Requirements

Post 1949 Operational Requirements and Naval Requirements

Spec. OR Year Type Related aircraft
ER.100 1950 Experimental low-speed research version of English Electric P.1 (q.v.) Short SB5
M.101 1950 Three-seat anti-submarine aircraft Fairey Firefly AS.7
ER.103 1947 Experimental research aircraft capable of Mach 1.5 at 36,000 ft - modified for P.1 as F.23/49 (q.v.) English Electric P.1, Fairey Delta 2
F.105DT Supermarine 545
N.107 de Havilland Sea Venom FAW22
UB.109 1951 Expendable Bomber Bristol Type 182
ER.110T 1952 Variable sweepback research monoplane Bristol Type 183
N.113D Supermarine 544
F.124T 1949 Rocket fighter Bristol Type 178
B.126T 1952 Low-level bomber Bristol Type 186
F.137D Avro 720
HR.146 Bristol Type 191 for the Royal Navy
HR.149 Bristol Type 193 for the Royal Canadian Navy
H.150 Bristol Type 192 for the Royal Air Force as the (Bristol) Westland Belvedere
OR.301 February 1952 Rocket propelled interceptor Saunders Roe SR.53, Avro 720
OR.303 195? Lightweight fighter to intercept Soviet Tu-4 bombers Folland Midge
OR.304 195? Helicopter for Coastal Command Bristol Sycamore
OR.323 195? Transport aircraft - Hastings replacement Armstrong Whitworth Argosy, English Electric P.14
OR.324 1952 Low-level bomber - Spec. B.126T written to this OR - cancelled 1954 Avro 721, Handley Page H.P.99 - proposals also tendered by: Bristol, Shorts & Vickers.
OR.334 195? VTOL transport aircraft Fairey Rotodyne; later cancelled
OR.351 1960 V/STOL Freighter (NATO NBMR.4) English Electric P.36
ER.43 ~1953 Experimental direct jet-lift VTOL research aircraft Short SC.1
ER.134 1953 Experimental high-speed research aircraft capable of sustaining Mach 2.75 to investigate effect of kinetic heating on airframe Bristol 188, English Electric P.6
ER.163 195? Experimental Fairey Delta 2 with de Havilland Gyron engine - later cancelled Fairey Delta 2
ER.204D 195? Experimental VTOL aircraft using Bristol Pegasus Hawker P.1127
NA.39 1953 Carrier borne strike aircraft to Spec. M.148T Blackburn Buccaneer, Short PD.13
NA.47 195? Mixed rocket-jet interception fighter for RN Saunders-Roe SR.177; cancelled 1957
NR/A.32 195? Light carrier-borne ASW to Spec. M.123 Short Seamew
F138D 1953 Mixed rocket-jet interception fighter - written around SR.53 Saunders-Roe SR.53
F.153D 1953 Fighter (Javelin development) Gloster "thin-wing" Javelin
F.155T 1955 High-altitude fighter English Electric P.8
R.156T 1955 Mach 3 reconnaissance aircraft English Electric P.10
OR.330 1954 Supersonic high flying reconnaissance aircraft Avro 730, Handley Page H.P.100
OR.329 /F.155 1955? Supersonic high flying interceptor Fairey "Delta III"; cancelled 1957
OR.356 19?? Supersonic V/STOL - Spec. SR.250 Hawker Siddeley P.1154; later cancelled
OR.357 19?? Maritime reconnaissance aircraft - led to Nimrod Hawker Siddeley Nimrod
OR.362 19?? Supersonic trainer aircraft - led to Jaguar SEPECAT Jaguar
GOR.2 1959 VTOL Strike Reconnaissance aircraft English Electric P.31, Gloster P.505
GOR.339 1956 STOL Tactical-Strike/Reconnaissance aircraft capable of Mach 2 and suitable for operation from unpaved strips - Canberra replacement British Aircraft Corporation TSR-2; later cancelled
GOR.345 195? V/STOL combat aircraft version of Hawker P.1127 - Harrier development Hawker Siddeley Harrier
GSR.3335 196? Helicopter - Scout replacement Westland Lynx
GSR.3336 196? Helicopter - Sioux replacement Westland Gazelle
RB.156 Reconnaissance-bomber Avro 730
ASR.365 196? Helicopter - Tactical Support Westland Puma
ASR.367 196? Bomber - Vulcan B.2 - see also B.35/46 Avro Vulcan B.2
ASR.368 196? Bomber - Victor B.2 - see also B.35/46 Handley Page Victor B.2
ASR.371 196? Transport aircraft Short Belfast
ASR.372 196? Trainer version of Lightning - Lightning T.5 English Electric Lightning T.5
ASR.373 196? VIP Transport aircraft - Andover CC.2 Hawker Siddeley Andover CC.2
ASR.376 196? Tanker aircraft Handley Page Victor B(K).1/1A
ASR.378 196? Transport aircraft - VC10 Vickers VC10
ASR.381 196? Interim Maritime Patrol aircraft to Spec. MR.254 - written around Atlantique Breguet Atlantique
ASR.382 196? Two-seat trainer version of P.1154 for RAF - cancelled Hawker Siddeley P.1154
ASR.384 196? Harrier requirement - see also GOR.345 Hawker Siddeley Harrier
ASR.385 196? Phantom for RAF McDonnell Douglas F-4M Phantom
ASR.397 1970 Basic jet trainer - Jet Provost replacement Hawker Siddeley Hawk
ASR.409 Harrier replacement McDonnell Douglas AV-8 as Harrier GR.5
NSR.6451 19?? V/STOL carrier borne fighter aircraft - Naval Harrier BAE Sea Harrier

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