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The prime contractor was Alliant Techsystems – later merging with Orbital Sciences Corporation to form Orbital ATK, in turn being taken over by Northrop Grumman and renamed Northrop Grumman Innovation Systems – and the industry team includes Interstate Electronics Corporation. [3] By April 2018, more than 25,000 PGKs had been produced. [4]
The engines were mounted above the wing and featured integrated fire extinguishers. The engines were started with electric motors, the power for the motors being provided by a ground cart. [3] The AI-20 is a single-shaft turboprop with a ten-stage axial compressor and a three-stage power turbine, and is designed to run at a constant speed. [4]
Here the Il-20M, coming from Romania and flying east, again flew 15 to 20 nautical miles along the Turkish Black Sea coast before being identified and intercepted by four Turkish F-16s. [ 2 ] On October 22, 2014, according to the Estonian military, an Il-20M entered Estonian airspace and stayed in it for a short period of time.
The prime contractor is Alliant Techsystems and the project team includes Interstate Electronics Corporation. [42] In operation the PGK will screw into the nose of the projectile much like the existing fuze. However, as well as the fuzing function it will provide a GPS guidance package and control surfaces to correct the flight of the shell.
The engine ran about 60 °F (33 °C) hotter than the TPE331-14 in the core. [3] It was Garrett's first free-turbine turboshaft, avoiding the high reduction gear of a single spool turboprop and allowing an easier starting since the gas generator is disengaged from the power turbine. The HP spool turns at 31,500 rpm while the LP spool turns at ...
The GE Passport is a high bypass ratio turbofan. The engine is a twin-spool, axial-flow turbofan with a high bypass ratio of 5.6:1 and an overall pressure ratio of 45:1. The front fan is attached to the three-stage low-pressure compressor; the 23:1 pressure ratio 10-stage high-pressure compressor includes five blisk stages for weight reduction.
The Japanese Aero Engine Corporation has been involved in a number of other engines, including the General Electric CF34-8/-10, General Electric GEnx, Rolls-Royce Trent 1000, Pratt & Whitney PW1100/1400G-JM, General Electric Passport 20 engine and General Electric GE9X.
The engine's name is a combination of the Roman numeral V, symbolizing the five original members of the International Aero Engines consortium, formed in 1983 to produce the engine, and 2500, which represents the 25,000-pound-force (110 kN) thrust produced by the original engine model, the V2500-A1.