Accession Number:

AD0636928

Title:

APPROXIMATE SOLUTIONS FOR COMPUTING HELICOPTER HARMONIC AIRLOADS

Descriptive Note:

Technical rept.

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE AEROELASTIC AND STRUCTURES RESEARCH LAB

Personal Author(s):

Report Date:

1965-12-01

Pagination or Media Count:

53.0

Abstract:

Assuming a constant circulation, rigid, trailing wake and using a lift deficiency function to represent the unsteady aerodynamic effects, various methods of calculating the airloads on a helicopter rotor in steady, forward flight were developed for the purpose of achieving a faster solution times for a given level of accuracy and b a more accurate representation of the lifting surfacevortex interaction for the case where the blade passes close to the vortex line generated by a previous blade. Since most of the solution time is required to calculate the induced velocities due to the trailing wake, various approximate methods of calculating the induced velocities due to a rigid, skewed helix were developed.

Subject Categories:

  • Aerodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE