Pratt 26 Whitney JT9D 7R4G2 Free 3D model

This 3D model was originally created with Sketchup 8 and then converted to all other 3D formats. Native format is .skp 3dsmax scene is 3ds Max 2016 version, rendered with Vray 3.00 The JT9D was developed as part of the design phase of the C-5 Galaxy. A contract was awarded to Pratt %26 Whitney to study the type of large engine needed, but the production contract was eventually awarded to General Electric and their TF39 turbofan. The JT9D was, however, chosen by Boeing to power the 747, with that aircraft's first flight taking place on 9 February 1969. Flight testing of the engine had begun in June 1968, using a Boeing B-52E as a testbed. The JT9D-3, which entered service in 1970, was constructed using titanium and nickel alloys. The engine featured a single-stage fan, a three-stage low-pressure compressor and an eleven-stage high-pressure compressor coupled to a two-stage high-pressure turbine and four-stage low-pressure turbine. This version of the JT9D weighed 8,608 lb {3,905 kg} and produced 43,500 lbf [193,000 N] thrust. Production ceased in 1990. Pratt %26 Whitney's designated successor to the JT9D family is the PW4000, which features fewer parts, greater reliability, and lower base selling price. Modeled completely from scratch by me, due to lack of a proper JT9D model on the warehouse. Thanks to AirbusA330 for the pylon.