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 ...

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 ...

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 ...

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.

Innovative solutions for reducing particulate emissions will be necessary in order to comply with the even more stringent exhaust-gas standards of the future. The potential of a diesel nozzle with ...

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 ...

The government has been imposing a stricter diesel engine efficiency standard to reduce carbon dioxide, NOx and other particulate emissions. Diesel combustion improvement is a major concern, and many ...