Any student new to the principles of fluid dynamics will be familiar with Bernoulli’s principle and the Venturi effect, where the speed of a liquid or gas increases when the size of the conduit it ...

Variable-area fan nozzles on the latest high-bypass engines could increase fuel efficiency and reduce airport noise. Pratt & Whitney is introducing the concept on its PW1100G for the Airbus A320NEO.

A variable area nozzle for airliner engine exhausts could reduce noise substantially, according to researchers at the UK's University of Cambridge. Currently used on military engines during ...

In the wake of flight and certification testing of the PW1500G, Pratt & Whitney and Bombardier have made the surprise decision to build the CSeries without a novel propulsion feature known as the ...

SS White Technologies (H4/A4) is providing key components for Pratt & Whitney's variable area fan nozzle technology on the Bombardier CSeries programme, the US-based component supplier says. The Pratt ...

PACCAR has filed a patent for a variable geometry turbine (VGT) that includes an adjustable nozzle and a controller. The nozzle is calibrated during normal operation by adjusting it towards a closed ...

How variable geometry turbochargers (VGT), or variable nozzle turbochargers (VNT) work. Variable geometry turbos use vanes to alter the air flow path of the exhaust gases to maximize boost across the ...