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ASTM Selected Technical Papers
Applications of Composite Materials
By
MJ Salkind, Ph.d
MJ Salkind, Ph.d
1
Chief
, Stuctures and Materials Sikorsky Aircraft Division of
United Aircraft Corporation
?
Stratford, Connecticut
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GS Holister, Ph.d
GS Holister, Ph.d
2
Dean and Director of Studies in Technology
?
The Open University
?
Bletchley, Buckinghamshire,
England
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ISBN-10:
0-8031-0115-5
ISBN:
978-0-8031-0115-9
No. of Pages:
194
Publisher:
ASTM International
Publication date:
1973

The development of fiber reinforced resin-bonded structural composite materials has created a new degree of design flexibility for the helicopter engineer. The development and commercial availability of glass fibers, carbon or graphite fibers, and boron fibers, with their attendant widely varying stiffness properties and material densities, enable the specialist both to design his structure to utilize the excellent fatigue properties of the materials available and to design the inherent properties of the material which he intends to use in his advanced VTOL systems.

Filament reinforced epoxy structures are compared with metal structures commonly used for helicopter rotor blades. Test data on several fiber reinforced epoxy materials and development test results of full-sized reinforced epoxy rotor blade segments are given. The manufacturing techniques, quality assurance provisions, and economic considerations of the cost of materials versus component performance improvements are also discussed.

1.
Tarczynski
,
T.
in
Vertiflite
,
10
1963
.
2.
Pinckney
,
R.L.
, “
Fabrication Techniques and Materials for High Modulus Filament Reinforced Composites
,” Final Report to U.S. Air Force AFML, AFSC, WPAFB, Ohio, Contract AF33(615)3319, Boeing Document D8-0916,
12
1967
.
3.
Hoffstedt
,
D.J.
, “
Research and Development of Helicopter Rotor Blades Utilizing Advanced Composite Materials
,” Technical Report AFML-TR-71-125, Contract AF33(615)5275,
10
1971
.
4.
Gueshaw
,
H.E.
and
Hannah
,
C.G.
,
Journal of the Royal Aeronautical Society
 0368-3931, Vol.
71
, No.
677
,
05
1967
, pp. 355–362.
5.
Static and Dynamic Properties of Woven and Non-woven S-Glass Fibers
,” Report No. 69-9,
U.S. Army Aviation Materials Laboratories
.
6.
Military Specification, Test Requirements Helicopters
,” Mil-T-8679.
7.
Hoffstedt
,
D.J.
, et al
, USAAMRDL Report 71-42,
09
1971
.
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