Pratt 26 Whitney JT9D 7R4G2 Free 3D model

cgtrader

This 3D model was originally created from scratch with Sketchup 8 and then successfully converted into various other 3D formats. The native format is .skp, while 3ds Max scene uses 3ds Max 2016 version and is rendered using Vray 3.00. The JT9D was developed during the design phase of the C-5 Galaxy as part of a major research project. Pratt & Whitney was awarded a contract to study large engine types needed, but General Electric and their TF39 turbofan were eventually chosen for production. However, Boeing still selected the JT9D to power the 747. The aircraft took its first flight on 9 February 1969. Flight testing of the engine began in June 1968 using a Boeing B-52E as a testbed aircraft. The JT9D-3 version, introduced in service in 1970, was constructed from titanium and nickel alloys. The single-stage fan features a three-stage low-pressure compressor and an eleven-stage high-pressure compressor connected to a two-stage high-pressure turbine and four-stage low-pressure turbine. This engine weighs 8,608 lb {3,905 kg} and produces 43,500 lbf [193,000 N] thrust. Production ended in 1990 when Pratt & Whitney introduced their PW4000 engine family as a successor to the JT9D engines. The new design features fewer parts, greater reliability, and lower base selling price. Due to the lack of a suitable JT9D model on the warehouse, I created this one from scratch, but special thanks are given to AirbusA330 for providing the pylon model.