Wright J65

J65

Sectioned Wright J65
Type	Turbojet
Manufacturer	Curtiss-Wright
First run	1 October 1948
Major applications	Douglas A-4 Skyhawk Grumman F-11 Tiger Martin B-57 Canberra Republic F-84F Thunderstreak
Developed from	Armstrong Siddeley Sapphire

The Wright J65 was an axial-flow turbojet engine produced by Curtiss-Wright under license from Armstrong Siddeley. A development of the Sapphire, the J65 powered a number of US designs.

Design and development

Curtiss-Wright purchased a license for the Sapphire in 1950, with plans to have the production lines running in 1951. However a series of delays due to design changes by Curtiss-Wright, such as substituting the Sapphire's machined mid-section solid forged diffuser frame with a fabricated one of welded nodular iron,^[1] led to its service introduction slipping a full two years, by which point the Pratt & Whitney J57 was on the market and took many of the J65's potential sales. Nevertheless, once it entered production it proved to be as good as the British versions, and along with the Martin B-57, its original target, the J65 went on to power versions of the North American FJ Fury, Douglas A-4 Skyhawk, Republic F-84F Thunderstreak, and the two Lockheed XF-104 Starfighter prototypes.

A 6,500-10,380ehp turboprop version of the J65 (Sapphire) was developed by Curtiss-Wright as the Wright T49, and a commercial derivative, the TP51A2 was also designed. The T49 first ran in December 1952 at 8,000 shp, followed by flight testing in a XB-47D test bed from 26 August 1955. By this time however, the market for the engine had vanished.^[2]

Applications

Specifications (J65-B)

General characteristics

Type: Turbojet
Length: ~122in (~3098 mm)
Diameter: 37.52in (953 mm)
Dry weight: 2776lb (1259 kg)

Components

Compressor: 13-stage axial
Combustors: annular
Turbine: 2-stage axial

Performance

Maximum thrust: 7,239lbf (32.2KN)
Overall pressure ratio: 7:1
Air mass flow: 119.05lb/s (54kg/s)
Turbine inlet temperature: ~848C (1558F)
Specific fuel consumption: ~0.916 lb/(lbf·h) (25.9 g/(kN·s))
Thrust-to-weight ratio: 2.61

References

↑ "World Encyclopedia of Aero Engines - 5th edition" by Bill Gunston, Sutton Publishing, 2006, p.249
↑ "World Encyclopedia of Aero Engines - 5th edition" by Bill Gunston, Sutton Publishing, 2006, p.249

Gunston, Bill (2006). World Encyclopedia of Aero Engines, 5th Edition. Phoenix Mill, Gloucestershire, England, UK: Sutton Publishing Limited. ISBN 0-7509-4479-X.
Kay, Anthony L. (2007). Turbojet History and Development 1930-1960 2 (1st ed.). Ramsbury: The Crowood Press. ISBN 978-1861269393.

External links

Wikimedia Commons has media related to Wright J65.

A 1952 advert for the Sapphire/J 65
"Anglo-American Jewel - Engineering Details of the Wright J65 Sapphire Revealed" - a 1954 Flight article on the J65

Wright Aeronautical and Lawrance Aero Engine Company aircraft engines

Wright inline engines

E
Gypsy
T-1
T-2
T-3 (V-1950)
T-4
V-720
IV-1460
IV-1560

Lawrance radials

Wright radials

Whirlwind	R-540 R-760 R-790 R-975 R-1510 R-1670

Cyclone	R-1300 R-1820 R-2600 R-3350 R-4090

Others	Gale R-1200 R-2160

Wright turbojets

Wright turboprops/turboshafts

United States military gas turbine aircraft engine designation system

Turbojets	J30 J31 J32 J33 J34 J35 J36 J37 XJ38 J39 J40 XJ41 J42 J43 J44 J45 J46 J47 J48 XJ49 J51 J52 J53 J54 J55 J56 J57 J58 J59 J60 J61 J63 J65 J67 J69 J71 J73 J75 J79 J81 J83 J85 J87 J89 J91 YJ93 J95 J97 J99 J100 YJ101 J102 J400 J401 J402 J403 J700

Turboprops/ Turboshafts	T30 T31 T33 T34 T35 T36 T37 T38 T39 T40 T41 T42 T43 T44 T45 T46 T47 T48 T49 T50 T51 T52 T53 T54 T55 T56 T57 T58 T60 T61 T62 T63 T64 T65 T66 T67 T68 T69 T70 T71 T72 T73 T74 T76 T78 T80 T100 T101 T400 T405 T406 T407 T408 T700 T701 T702 T703 T706 T708 T800

Turbofans	TF30 TF31 TF32 TF33 TF34 TF35 TF37 TF39 TF41 F100 F101 F102 F103 F104 F105 F106 F107 F108 F109 F110 F112 F113 F117 F118 F119 YF120 F121 F122 F124 F125 F126 F127 F128 F129 F135 F136 F137 F138 F400 F401 F402 F404 F405 F408 F412 F414 F415

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