Accession Number:

ADA055104

Title:

Helicopter Transmission Vibration and Noise Reduction Program. Volume I. Technical Report

Descriptive Note:

Final rept. Jun 1974-Oct 1977

Corporate Author:

BOEING VERTOL CO PHILADELPHIA PA

Personal Author(s):

• Sciarra, John J.
• Howells, Robert W.
• , Joseph W.
• Drago, Raymond J.
• Schaeffer, Edward G.

Report Date:

1978-03-01

Pagination or Media Count:

308.0

Abstract:

The objective of the Helicopter Transmission VibrationNoise Reduction Program was to generate analytical tools for the prediction and reduction of helicopter transmission vibrationnoise that provide the capability to perform trade studies during the design stage of a program. Application of this optimization capability yields drive train components that are dynamically quiet with reduced vibrationnoise levels and inherently longer life.

Descriptors:

• *HELICOPTERS
• *NOISE REDUCTION
• *TRANSMISSIONS(MECHANICAL)
• COMPUTERIZED SIMULATION
• VIBRATION
• COMPUTER AIDED DESIGN
• REDUCTION
• DRIVES
• HOUSINGS
• AIRCRAFT NOISE
• AIRCRAFT ENGINE NOISE

Subject Categories:

• Helicopters
• Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE