![]() The proposed aircraft utilized a low-wing monoplane form with single rudder fin and rudder-mounted horizontal tailplanes. The V-340 eventually matured to become the limited-production "Pirate" platform but remains a largely overlooked entry into the USN fighter field. While the requirement led to the competing McDonnell FH "Phantom" product (detailed elsewhere on this site), the V-340 offering joined a few others in holding at least some interest with USN authorities. Thrust-to-weight ratio: 2.3:1 dry, 2.The Chance Vought V-340 was part of the submissions made to the United States Navy (USN) intending to fulfill a requirement for the service's first-ever jet-powered carrier-based fighter.Thrusts and SFC's here are for the official approved specification guarantees. No updated specification was issued to cover such engines. On tests fully modernized engines approached 6,000 pounds-force (27 kN)) of thrust. A "modernization" program replaced many parts on production J46-WE-8B and J46-WE-8 engines to give higher thrust and longer turbine life. Oil system: wet sump in accessories gearcase, 3.25 US gallons (12.3 l).Combustors: annular, walking stick evaporators.Compressor: single-spool, 12-stage axial.Applicationsĭata from General characteristics This variant was canceled with the aircraft program. J46-WE-18 This variant produced an increased 6,100 lbf (27.1 kN) of A/B thrust for the proposed A2U-1 attack aircraft, an attack variant of the F7U. Basically identical to the -8/-8B, the aircraft was equipped with a fresh water spray system that flushed salt deposits out of the engine before takeoff and after shutdown. J46-WE-12 This variant powered the F2Y Sea Dart hydroski aircraft. J46-WE-8 3,980 lbf (20.46 kN) (5,800 lbf (27.13 kN) thrust with afterburner) This variant powered both the F7U-3 and F7U-3M, the missile-capable Cutlass. This variant also powered the Harvey Hustler, a speed boat designed to go faster than 275 mph. J46-WE-8B The F7U-3 was equipped with two J46-WE-8B turbojets giving a 680 mph (1,095 km/h) max speed. All -8A engines were upgraded to the -8B build standard after being produced. ![]() J46-WE-8 J46-WE-8A This variant powered the F7U-3 Cutlass and produced 5,500/5,800 lbf of A/B thrust. Intended for the Douglas F3D-3 SkyKnight but did not go into production because of schedule slippage and the F3D-3 cancellation. Failed to exit testing due to thrust shortfalls. Maintenance on the J46s of a F7U Cutlass aboard USS Hancock (CVA-19), 1957 J46-WE-2 J46-WE-3 3,980 lbf (18.15 kN) thrust Was to be used the Douglas X-3 Stiletto. This was abandoned when the electronic control could not be made acceptably reliable the final afterburner was an "ON/OFF" unit. The original design, using an electronic control system, would have allowed continuous adjustment of afterburner thrust from minimum to maximum. The same long control rods now pushed or pulled a ring that ran on rollers, which in turn opened or closed the iris. By the time the engine reached production, the rear nozzle had an iris-type "petal" design. ![]() ![]() Early development engines included a simple "eyelid" afterburner, actuated by control rods that ran the length of the engine. The engine's 12-stage compressor was driven by two turbine stages on a single shaft. The development program ran into many problems with this engine, including the original electronic control system, compressor/turbine mismatches, combustion instability and control issues at altitude leading to compressor stalling The produced -8, -8A and -8B engines were all derated from the original design specification on both thrust and specific fuel consumption. It was seen as a lower development risk than the Westinghouse J40 which was in parallel development at the same time. The model number assigned was X24C10, even though the J46 differed in many design features from the smaller J34. #Westinghouse j34 turbine jet seriesThe Westinghouse model number was a continuation of the "X24C" series of the J34. The J46 engine was developed as a larger, more powerful version of Westinghouse's J34 engine, about 50% larger. ![]()
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