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The 22-blade fan of an A320's V2500-A1 Rolls-Royce based the 10-stage HP compressor on an 8-stage run in the RB401 in the mid 1970's followed by a 9-stage run in the RJ.500 . The V.2500 would use 10 stages, with the first 4 with variable stators, giving a pressure ratio of 20:1. [ 4 ]
A propfan, also called an open rotor engine, open fan engine [1] [2] or unducted fan (as opposed to a ducted fan), is a type of aircraft engine related in concept to both the turboprop and turbofan, but distinct from both. The design is intended to offer the speed and performance of a turbofan, with the fuel economy of a turboprop.
FiatAvio withdrew as a shareholder of the program early on, but the now-renamed Avio still remains as a supplier. The "V" product nomenclature remains as a legacy of the five original shareholders. An Airbus A320-232 with V2500 engines. Workshare on the joint venture's first engine, the V2500, was
This is an incomplete list of television programs formerly or currently broadcast by History Channel/H2/Military History Channel in the United States. Current programming [ edit ]
The fan diameter was expected to range from 108 to 118 in while having a bypass ratio of 18:1 to 20:1. Availability of the engine was estimated between 1992 and 1994. [1] In December 1986 the V2500 SuperFan was officially offered to Airbus as powerplant for the Airbus A340 being developed at that time. With that offer, more design details were ...
Eight years later, the ownership of the channel was privatized and its name was changed to The Learning Channel. It showcased documentaries on a variety of topics, like "Paleoworld" and "Amazing ...
This category includes television programs that have regularly aired their first-run episodes on History. It does not include programs which first appeared on a different network. It does not include programs which first appeared on a different network.
The Contrafan was designed to power the four-engine Boeing 747 at a cruise speed of Mach 0.9. Like the General Electric Unducted Fan (UDF), the RB529 would have direct-drive contra-rotating fans in pusher configuration, and it would have variable pitch fan blades that were capable of reverse thrust.