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Stingray


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Advanced Composite Airframe Program (ACAP)
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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.

(See Wikipedia)

Below is a page on the Bell ACAP from a 1983/84 Bell Helicopter Textron Reference Guide:



-- Edited by Stingray on Sunday 27th of December 2015 01:33:23 PM

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Stingray


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From Mark Nankivil, a Boeing-Vertol Preliminary Design report on the ACAP, December 1981:



-- Edited by Stingray on Sunday 27th of December 2015 01:33:40 PM

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VinceJ


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Cool! First time hearing Boeing-Vertol's involvement in the ACAP program!



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555


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Bell D-292 ACAP and Sikorsky S-75 ACAP FTV from Flight, 1984:

http://www.flightglobal.com/pdfarchive/view/1984/1984%20-%200375.html?search=boeing-vertol%20acap



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555


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Comparison of construction and use of materials in the Bell and Sikorsky ACAP airframes, from Flight, 1982:

http://www.flightglobal.com/pdfarchive/view/1982/1982%20-%202488.html?search=boeing-vertol%20acap



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555


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Bell D-292 ACAP first flight, from Flight 1985, and Bell company model of the airframe illustrating Bell 222 dynamics, from Flight, 1982:

http://www.flightglobal.com/pdfarchive/view/1985/1985%20-%202661.html?search=boeing-vertol%20acap

http://www.flightglobal.com/pdfarchive/view/1982/1982%20-%202711.html?search=boeing-vertol%20acap



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555


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Bell's model cutaway to demonstrate the composite-airframe design features, from Flight, 1983:

http://www.flightglobal.com/pdfarchive/view/1983/1983%20-%200407.html?search=boeing-vertol%20acap



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SuperStallion


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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!



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555


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Concept of Sikorsky's ACAP proposal, from Flight 1981:

http://www.flightglobal.com/pdfarchive/view/1981/1981%20-%201557.html?search=boeing-vertol%20acap



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Stingray


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More of the Boeing-Vertol ACAP:



-- Edited by Stingray on Friday 11th of April 2014 11:48:22 PM

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Stingray


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More yet:



-- Edited by Stingray on Sunday 27th of December 2015 01:34:31 PM

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Stingray


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Bell and Sikorsky ACAP airframe crash tests at NASA Langley's Impact Dynamics Research Facility:

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.80.2024&rep=rep1&type=pdf



-- Edited by Stingray on Sunday 27th of December 2015 01:34:45 PM

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Stingray


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Model of the Sikorsky S-75 ACAP, from Popular Science, February 1983:



-- Edited by Stingray on Saturday 12th of April 2014 12:50:44 AM

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Stingray


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Sikorsky S-75 ACAP crash test at NASA/Langley Research Center, 1999:

http://www.archive.org/search.php?query=subject%3A%22AIRCRAFT+DESIGN+--+IMPACT+TESTS+--+HELIC%22

Archive of 88 high-res .tif images.



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fluttercopter


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WOW.

Stingray, thanks infinity for these posts.



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Gunship


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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.



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Stingray


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Gunship wrote:

Thanks for posting, and please send my thanks to Mark for the wonderful documentation.

 

No prob, I will.



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Flyboy


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Really nice images, thanks for posting.

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Flyboy


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I just stumbled across this...



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Stingray


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Awesome! Thanks for posting it.



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Stingray


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From AHS-Vertiflite No.5-6, 1979:



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