Don Hillberg – Helicopter Builder – Pilot – Designer
Don Hillberg Helicopter Builder – Pilot – Designer Hillberg Helicopters is an American aircraft manufacturer based in Fountain Valley, California and founded in 1990 by…
helicopter rotorblades
Extruded Aluminum Helicopter Rotorblade Review
Extruded Aluminum Rotorblades The purpose of this helicopter rotorblade article is to review two flight applications and provide some insight into using the unique untwisted,…