Accession Number : AD0768769

Title :   Simplified Aircraft Performance Methods: Power Required for Single and Tandem Rotor Helicopters in Hover and Forward Flight.

Descriptive Note : Technical rept.,

Corporate Author : ARMY MATERIEL SYSTEMS ANALYSIS AGENCY ABERDEEN PROVING GROUND MD

Personal Author(s) : Dietz,C. Raymond

Report Date : AUG 1973

Pagination or Media Count : 57

Abstract : The report presents a combination graphic and computing method for quick determination of shaft horsepower required for helicopters in hover and forward flight. Sets of equations were developed for computing power required. These equations are based upon theory and test data and show good agreement with published power required data on many currently operating helicopters. The equations have also been programmed for digital computation thereby making possible detailed studies of helicopter performance and the effects of parametric variations. (Author)

Descriptors :   (*HELICOPTERS, HOVERING), HELICOPTER ROTORS, ROTOR BLADES(ROTARY WINGS), DRAG, THRUST, GROUND EFFECT, LEVEL FLIGHT

Subject Categories : Helicopters

Distribution Statement : APPROVED FOR PUBLIC RELEASE