A Computerized Balancing Technique for Supercritical Helicopter Shafting.

Abstract

A full-size supercritical helicopter tail rotor drive shaft has been balanced using a quasi-static data acquisition technique. The method employs ultrasonic gaging equipment and a digital computer to determine the amount and location of the balance correction. In one 15-minute pass, the system has demonstrated the ability to locate the center of gravity (CG) of the shaft within 0.001 inch. The balanced shaft has run at speeds up to 10,500 rpm, including sustained operation at four critical speeds, with acceptable vibration at critical speeds. Operation at the design speed (between 2nd and 3rd critical speed) was well within standard high quality balance values.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1980
Accession Number
ADA095143

Entities

People

  • G. J. Korkosz

Tags

Communities of Interest

  • Air Platforms
  • Sensors

DTIC Thesaurus Topics

  • Acquisition
  • Aircrafts
  • Center Of Gravity
  • Circuits
  • Computer Programs
  • Computers
  • Data Acquisition
  • Digital Computers
  • Drive Shafts
  • Economic Analysis
  • Electronic Circuits
  • Engineering
  • Government Procurement
  • Governments
  • Measurement
  • Systems Engineering
  • Tail Rotors

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Structural Health Monitoring of Composite Structures.