Innovative Erosion-Resistant Coating Materials/Concepts for Leading Edges on Composite Rotor Blades

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$750,000.00
Award Year:
2004
Program:
SBIR
Phase:
Phase II
Contract:
N68335-04-C-0079
Agency Tracking Number:
N022-0962
Solicitation Year:
2002
Solicitation Topic Code:
N02-162
Solicitation Number:
2002.2
Small Business Information
ANALYTICAL SERVICES & MATERIALS, INC.
107 Research Drive, Hampton, VA, 23666
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
Y
Duns:
119069052
Principal Investigator:
Karl Wiedemann
Senior Scientist
(757) 865-7093
karl@asm-usa.com
Business Contact:
Jalaiah Unnam
President
(757) 865-7093
unnam@asm-usa.com
Research Institution:
n/a
Abstract
The Navy's helicopters and aircraft encounter dust, salt and water laden environments. The impact of sand and water droplets onto the rotor blades at high velocities causes rotor life to drop drastically. The cost of replacing and maintaining rotor blades is a significant factor. The current solution is to use metallic abrasion strips that offer limited protection. AS&M has been developing a coating that provides superior erosion protection. AS&M's coating is a nano-composite reinforced elastomer with superior erosion resistance. The coating resists erosion by absorbing a part of the impact energy. In Phase I, the applicability of AS&M's coating on composite material was demonstrated. AS&M's coating was found to have adequate adhesion, uniformity, smoothness, high velocity sand erosion and cavitation properties. It was also found to be applicable on a range of substrates - aluminum, stainless steel, nickel, titanium and steel. In Phase II, we propose to further develop the material to improve its thermal conductivity and optimize the composition to demonstrate combined sand and rain erosion resistance in the whirling arm test. The up-scaling capabilities will be established by standardizing the technology-related issues that include specification of raw materials, mixing, spray processing, finishing, field applicability and repair.

* information listed above is at the time of submission.

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