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In summer 1993, Pratt & Whitney started to test its 53,000 lbf (240 kN) Advanced Ducted Propulsor (ADP) demonstrator at the NASA Ames wind tunnel, using a 4:1, 40,000 hp (30,000 kW) gearbox. Its 118.2 in (300 cm) fan with 18 reversing pitch composite blades had a 15:1 bypass ratio. It aimed to cut fuel consumption by 6–7%, emissions by 15% ...
In aeronautics, a ducted fan is a thrust-generating mechanical fan or propeller mounted within a cylindrical duct or shroud. Other terms include ducted propeller or shrouded propeller . [ 1 ] When used in vertical takeoff and landing ( VTOL ) applications it is also known as a shrouded rotor .
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.
Aircraft whose primary form of thrust is derived from a piston engine, rotary engine or turboshaft driving a ducted fan. Subcategories This category has the following 2 subcategories, out of 2 total.
After the Advanced Technology Fan Integrator demonstrator first ran on March 17, 2001, which became the PW1000G, Pratt & Whitney Canada was searching for a launch customer for the initially geared PW800, in the 10,000–19,000 lbf (44–85 kN) thrust range, bridging the gap between P&WC's PW300 and P&W's PW6000, intended for the regional- and ...
One of the first was a project with his cousin to produce the Bede Car, which used an 80 hp motorcycle engine driving a ducted fan for propulsion. Built primarily from fiberglass on aluminum, the car was to have weighed just under 1,000 lb (500 kg), less than a third of a normal four-seater built of steel.
The Avro Canada VZ-9 Avrocar is a VTOL aircraft developed by Avro Canada as part of a secret U.S. military project carried out in the early years of the Cold War. [1] [2] The Avrocar intended to exploit the Coandă effect to provide lift and thrust from a single "turborotor" blowing exhaust out of the rim of the disk-shaped aircraft.
The PLF1A-2 had a 40 in diameter (100 cm) geared fan stage, produced a static thrust of 4,320 lb (1,960 kg), [44] and had a bypass ratio of 6:1. [45] The General Electric TF39 became the first production model, designed to power the Lockheed C-5 Galaxy military transport aircraft. [ 22 ]