Every motorboat owner has a tale of hitting a submerged obstacle or boat ramp and damaging a propeller. Typically metal, it must be removed and taken to a prop repair shop, then sandblasted, bent, ...

It's fairly common knowledge that when a supersonic aircraft approaches the sound barrier, what follows is the sonic boom. This transitory period between subsonic and supersonic, known as transonic ...

Years after the space race, propeller design remained a sea-trial-and-error endeavor: haul, tweak the props, relaunch, sea-trial, repeat. Finally, the U.S. Navy paid ...

Propellers for piston-powered small airplanes primarily come in fixed-pitch, ground-adjustable, and constant-speed variants. Fixed-pitch propellers have a static blade angle, optimizing performance ...

Jonathan Chestney, engineering leader at Dowty. Credit: Dowty Jonathan Chestney, engineering leader at GE Aerospace subsidiary Dowty, speaks with Aviation Week Network about advances in aircraft ...

French electric marine drive specialist BlueNav is preparing to put a more natural spin in its lineup. The all-new Whale Design propeller features blades that follow the contours of a whale to improve ...

Combination of carbon, glass and epoxy resin produces a strong replacement for nickel/aluminum/bronze metal, the current propeller standard. Damage-tolerant reinforcing fabric strengthens highly ...