Although helicopter aerodynamics involves the same forces that arise in airplane aerodynamics, these forces occur differently due to fluid flow dynamics across the aircraft. Helicopters take advantage ...

Marenco Swisshelicopter is making tweaks to the main rotor hub of its SH-09 light-single based on data from flight tests that began last October. The design changes will be applied to the second ...

Sept. 30, 2025 marks 50 years since the first YAH-64A prototype took to the skies for the first time. Let's look at how the Apache has maintained its ...

Historical references to spinning flying machines go back hundreds of years, with evidence like the 12th-century Chinese twirling kite and Leonardo da Vinci's bizarre airscrew contraption of 1483.

Like many machines, helicopters can experience malfunctions and other equally dangerous issues. Among these is mast bumping, where the rotor hub pivots so much it hits the mast. If you think this ...