Hiller Ten99

{{Infobox aircraft begin

|name=Hiller Ten99

|image=Hiller Helicopter (3030845194).jpg

|caption=

}}{{Infobox aircraft type

|type=Experimental helicopter

|national origin=United States

|manufacturer=Hiller Aircraft

|first flight=July 16, 1961

|number built=1}}

The Hiller Ten99 (also known as the Hiller 1099) was an American 1961 experimental helicopter, created by Hiller Aircraft.

Design and development

The helicopter seated six and was similar to other helicopters by Hiller, but featured a larger, box-shaped cabin. It has four doors, and a set of clamshell doors on its aft side.{{cite journal|title=PS Picture News: Squared-off Helicopter|journal=Popular Science|date=February 1962|volume=180|issue=2|pages=73|publisher=Bonnier Corporation|issn=0161-7370}} The aircraft was powered by a Pratt & Whitney Canada PT6, and in July 1961, was the first aircraft to have been powered solely by a PT6 engine. The Ten99 was developed for a United States Navy Assault Support Helicopter program. However, the Navy eventually selected the Bell HU-1 instead.{{cite book|last=Fleming|first=William A.|author2=Richard A. Leyes|page=447|isbn=978-1-56347-332-6|title=The history of North American small gas turbine aircraft engines|publisher=AIAA|year=1999}} A civilian model was proposed, but not produced, and the project was eventually abandoned.

Specifications

{{Aircraft specs

|ref=Jane's All The World's Aircraft 1965–66{{cite book |title=Jane's All the World's Aircraft 1966-67 |last=Taylor |first=John W R |year=1966 |publisher=Sampson Low, Marston & Co. Ltd |location=London |page=227 }}

|prime units?=imp

|genhide=

|crew=

|capacity=6 people

|length m=12.57

|length note=(overall length)

|height m=3.18

|height note=

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|empty weight kg=862

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|max takeoff weight kg=1588

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|eng1 number=1

|eng1 name=Pratt & Whitney Canada PT6

|eng1 type=Turboshaft

|eng1 hp=550

|eng1 note=

|power original=

|thrust original=

|rot number=1

|rot dia m=10.86

|rot area sqm=92.6

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|perfhide=Y

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}}

Notes

{{reflist}}

References

{{Commons category|Hiller Ten99}}

  • {{cite book|last=Apostolo|first=Giorgio|title=The Illustrated Encyclopedia of Helicopters|year=1984|publisher=Bonanza Books|isbn=978-0-517-43935-7|url-access=registration|url=https://archive.org/details/illustratedencyc00apos}}
  • {{cite book|last=Taylor|first=John W. R.|title=Jane's All The World's Aircraft 1965–66|year=1965|publisher=Sampson Low, Marston & Company|location=London|author-link=John W. R. Taylor}}

{{Hiller aircraft}}

Ten99

Category:1960s United States experimental aircraft

Category:1960s United States helicopters

Category:Aircraft first flown in 1961