File:Allison 501-M78.png
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The Allison 501-M78 during ground tests. The single-rotation propfan engine would fly in 1987 on a Grumman Gulfstream II as part of NASA's Propfan Test Assessment (PTA) program.
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Author, source, URL:
"Toward future flight" in Spinoff (PDF) (1,987th ed.), NASA, pp. 30–33
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) |  |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 20:31, 31 May 2019 | | 905 × 947 (859 KB) | D271l (talk | contribs) | Author, source, URL: {{cite book |title=Spinoff |publisher=NASA |edition=1987 |publication-date=August 1987 |chapter=Toward future flight|pages=30–33 |url=https://archive.org/details/NASA_NTRS_Archive_19880002195/page/n31 |format=PDF |dead-url=no |archive-date=April 12, 2009 |given=James J. |surname=Haggerty |archive-url=https://web.archive.org/web/20090412195700/https://er.jsc.nasa.gov/seh/profan.html}} |
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