Helicopter Trim Analysis.

Abstract

This report presents a generic first-principles helicopter trim analysis for use on a personal work station. Working from the helicopter's physical properties, it calculates the main rotor blade's collective, longitudinal cyclic, body pitch, and stabilator pitch angles to maintain a trimmed flight condition over a complete forward-speed range. The computer program automatically sweeps through a forward-speed range, varying the collective, longitudinal cyclic, and stabilator pitch angles to satisfy the trimmed condition. It is an improvement over earlier work where the analyst had to vary these parameters at the keyboard. It presents an example of the usage with an AH-64A helicopter, and the program's source code is included.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1996
Accession Number
ADA310293

Entities

People

  • Joseph Fries

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Acquisition
  • Air Resistance
  • Aircraft Noses
  • Aircrafts
  • Airspeed
  • Army Aviation
  • Commerce
  • Computer Programs
  • Computers
  • Data Sets
  • Engineering
  • Equations
  • Flight Speeds
  • Helicopters
  • Military Research
  • Molecular Dynamics
  • Physical Properties

Readers

  • Aerodynamics.
  • Aerodynamics/Aeronautics.
  • Computer Science.