S-75 ACAP | |
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Sikorsky S-75 ACAP all-composite test aircraft | |
Role | Experimental helicopter |
Manufacturer | Sikorsky Aircraft |
First flight | 27 July 1984 |
Primary user | United States Army |
Number built | 2 |
Developed from | Sikorsky S-76 |
The Sikorsky S-75 was a proof-of-concept all-composite helicopter. Sikorsky Aircraft used all-composite materials to replace metal to provide greater strength, lighter weight, lower manufacturing costs, and reduce maintenance costs.