ACAP was created to demonstrate the benefits of a fully composite airframe structure. The goal of which was the development of an all-composite helicopter fuselage considerably lighter and less costly to build than predominantly metal airframes in support of the Light Helicopter Experimental (LHX) program.
Below is a page on the Bell ACAP from a 1983/84 Bell Helicopter Textron Reference Guide:
From Mark Nankivil, a Boeing-Vertol Preliminary Design report on the ACAP, December 1981:
Cool! First time hearing Boeing-Vertol's involvement in the ACAP program!
Vince Johnson - A merciless enemy but a powerful ally.
Bell D-292 ACAP and Sikorsky S-75 ACAP FTV from Flight, 1984:
Yippie Kai Yay, Mr. Falcon.
Comparison of construction and use of materials in the Bell and Sikorsky ACAP airframes, from Flight, 1982:
Bell D-292 ACAP first flight, from Flight 1985, and Bell company model of the airframe illustrating Bell 222 dynamics, from Flight, 1982:
Bell's model cutaway to demonstrate the composite-airframe design features, from Flight, 1983:
Stingray wrote:From Mark Nankivil, a Boeing-Vertol Preliminary Design report on the ACAP, December 1981:
Now that is great. I too have never heard of BV's ACAP proposal. You have sincerely made my day with these latest posts, thank you!
Concept of Sikorsky's ACAP proposal, from Flight 1981:
More of the Boeing-Vertol ACAP:
Bell and Sikorsky ACAP airframe crash tests at NASA Langley's Impact Dynamics Research Facility:
Model of the Sikorsky S-75 ACAP, from Popular Science, February 1983:
Sikorsky S-75 ACAP crash test at NASA/Langley Research Center, 1999:
Archive of 88 high-res .tif images.
Stingray, thanks infinity for these posts.
Dear Princess Celestia,
Today I learned that nopony kicks ass without tanker gas. Nopony!
Your faithful student,Fluttercopter
I remember a mention of Boeing-Vertol having "something" to do with the ACAP program, but I had no idea they actually submitted their own proposals and design studies for an ACAP airframe. Though, it does make sense recalling the fact they also had their hands in the LHX studies.
Thanks for posting, and please send my thanks to Mark for the wonderful documentation.
Gunship wrote:Thanks for posting, and please send my thanks to Mark for the wonderful documentation.
No prob, I will.
I just stumbled across this...
Awesome! Thanks for posting it.
From AHS-Vertiflite No.5-6, 1979: