Exploratory Development of Glare- and Noise-Reduction for Helicopter Rotor Blades.

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Abstract:

An exploratory investigation was conducted into a novel approach for the reduction of the visible signature of helicopter rotor blades. It is shown, through experimental results, on static models that the pattern of specular reflection optical signature can be modified to reduce the percentage of forward light scatter. However a moving surface wave along a simulated rotor blade was not obtained. Based upon research into previous work, there are several methods of achieving this phenomena in addition to the basic methods studied. The theoretical work investigated indicated that the application of the concept to reduce the optical signature will also reduce the audio signature. Author

Author(s):
Wing, Albert B. ; Trybula, Walter J.
Author Organization(s):
MCCOY ELECTRONICS CO MOUNT HOLLY SPRINGS PA
Descriptive Note:
Final technical rept.,
Pagination:
0123

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Contract/Grant Number(s):
DAAK02-72-C-0623
 Subject Terms
Communities of Interest:
Air Platforms
Descriptor(s):
*Helicopter rotors, *Rotor blades, Optical detection, Glare, Noise reduction, Acoustic signatures, Target signatures, Optical images, Acoustic waves
Field(s)/Group(s):
Helicopters, Acoustic Detection and Detectors, Optical Detection and Detectors
Report Date:
1973 Jan 01