Firestone 45

Firestone 45

__NOTOC__ Infobox Aircraft
name=Firestone Model 45 / XR-9 / XH-9


caption=
type=Utility helicopter
manufacturer=Firestone Aircraft Company
designer=
first flight=1946
introduced=
retired=
status=
primary user=United States Air Force
more users=
produced=
number built=2
variants with their own articles=

The Firestone Model 45 was a 1940s American experimental helicopter built by the Firestone Aircraft Company for the United States Air Force. Only one military helicopter (XR-9B) and one civil helicopter were built.

Development

Originally developed by G & A Aircraft with the co-operation of the United States Army Air Force Air Technical Service Command, the G & A Model 45B (designated XR-9 by the Army) was a design for a single-seat helicopter of pod-and-boom configuration. It had a fixed tri-cycle landing gear and three-bladed main and tail rotors. Power would have been supplied by a 126 hp (94 kW) Avco Lycoming XO-290-5 engine. The Model 45C (XR-9A) was the same helicopter with a two-bladed rotor. Neither of the two helicopters were built. G & A Aircraft which as part of the Firestone group was renamed the Firestone Aircraft Company in 1946.

A revised two-seat design the revised Model 45C (or XR-9B) was built with a three-bladed main rotor and two-seat in tandem. Powered by an Avco Lycoming O-290-7 engine it first flew in March 1946 and was delivered to the United States Air Force for evaluation. A civil version, the Model 45D was also built and flown, this differed in havinf the two occupants side-by-side instead of Tandem as in the 45C. No orders were placed and no more helicopters were built.

Variants

;Model 45B:Unbuilt single-seat helicopter with three-bladed rotor, Army designation XR-9.;Model 45C:Unbuilt single-seat helicopter with two-bladed rotor, Army designation XR-9A.;Model 45C (revised):Tandem two-seat helicopter powered by a Avco Lycoming O-290-7 engine and two-bladed rotor, one built as the XR-9B, later re-designated the XH-9B.;Model 45D:Side-by-side two-seat helicopter for civil market, one built.;XR-9:Army designation for the unbuilt Model 45B;XR-9A:Army designation for the unbuilt Model 45C;XR-9B:Army designation for the Model 45C (revised), later redesignated XH-9B;XH-9B:XR-9B re-designated in 1948.

Operators

; USA:United States Air Force

pecifications (XR-9B)

aerospecs
ref=The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing
met or eng?= eng

crew=Two
capacity=
length m=8.23
length ft=27
length in=0
span m=
span ft=
span in=
swept m=
swept ft=
swept in=
rot number= 1
rot dia m= 8.53
rot dia ft= 28
rot dia in= 0
dia m=
dia ft=
dia in=
width m=
width ft=
width in=
height m=2.60
height ft=8
height in=6½
wing area sqm=
wing area sqft=
swept area sqm=
swept area sqft=
rot area sqm=
rot area sqft=
volume m3=
volume ft3=
aspect ratio=
empty weight kg=
empty weight lb=
gross weight kg=794
gross weight lb=1750
lift kg=
lift lb=

eng1 number=One
eng1 type=Avco Lycoming O-290-7 flat-four engine
eng1 kw= 101
eng1 hp= 135
eng1 kn=
eng1 lbf=
eng1 kn-ab=
eng1 lbf-ab=
eng2 number=
eng2 type=
eng2 kw=
eng2 hp=
eng2 kn=
eng2 lbf=
eng2 kn-ab=
eng2 lbf-ab=

max speed kmh=
max speed mph=
max speed mach=
cruise speed kmh= 129 (approx)
cruise speed mph= 80 (approx)
range km=
range miles=
endurance h=
endurance min=
ceiling m=3050
ceiling ft=10,000
glide ratio=
climb rate ms=
climb rate ftmin=
sink rate ms=
sink rate ftmin=

armament1=
armament2=
armament3=
armament4=
armament5=
armament6=

References

* John Andrade, U.S.Military Aircraft Designations and Serials since 1909, Midland Counties Publications, 1979, ISBN 0 904597 22 9 (Page 171)
* The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing

ee also

aircontent

related=

similar aircraft=

sequence=

lists=
*list of military aircraft of the United States

see also=


Wikimedia Foundation. 2010.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • Firestone — may refer to:PeopleHarvey Firestone family*Harvey Samuel Firestone (1868 1938), founder of Firestone Tire and Rubber Company *Harvey Samuel Firestone, Jr., son of Firestone founder *Elizabeth Parke Firestone, daughter in law of Harvey Firestone… …   Wikipedia

  • Firestone — Saltar a navegación, búsqueda Para otros usos de este término, véase Firestone (desambiguación). La Firestone Tire and Rubber Company fue fundada por Harvey Firestone a finales del siglo XIX para fabricar neumáticos para vehículos de transporte.… …   Wikipedia Español

  • Firestone — steht für: Firestone Tire Rubber Company, US amerikanischer Reifenhersteller, 1988 von der Bridgestone Tire Company übernommen. Jay Firestone, kanadischer Filmproduzent Shulamith Firestone, kanadische Feministin eine US amerikanische Stadt; siehe …   Deutsch Wikipedia

  • Firestone — Firestone, CO U.S. town in Colorado Population (2000): 1908 Housing Units (2000): 664 Land area (2000): 5.342994 sq. miles (13.838290 sq. km) Water area (2000): 0.040001 sq. miles (0.103603 sq. km) Total area (2000): 5.382995 sq. miles (13.941893 …   StarDict's U.S. Gazetteer Places

  • Firestone, CO — U.S. town in Colorado Population (2000): 1908 Housing Units (2000): 664 Land area (2000): 5.342994 sq. miles (13.838290 sq. km) Water area (2000): 0.040001 sq. miles (0.103603 sq. km) Total area (2000): 5.382995 sq. miles (13.941893 sq. km) FIPS… …   StarDict's U.S. Gazetteer Places

  • Firestone — Fire stone (?; 110), n. [AS. f[=y]rst[=a]n flint; f[=y]r fire + st[=a]n stone.] 1. Iron pyrites, formerly used for striking fire; also, a flint. [1913 Webster] 2. A stone which will bear the heat of a furnace without injury; especially applied to …   The Collaborative International Dictionary of English

  • firestone — [fīr′stōn΄] n. 1. Historical flint or iron pyrites used for striking fire 2. a stone that can withstand intense heat …   English World dictionary

  • Firestone — Изготовление шин на заводе Firestone, Акрон (Огайо), декабрь 1941 Эта статья  об американской компан …   Википедия

  • Firestone — Logo de Firestone Création 1900, Akron (Ohio) …   Wikipédia en Français

  • Firestone — 1 Admin ASC 2 Code Orig. name Firestone Country and Admin Code LR.13.2277383 LR 2 Admin ASC 2 Code Orig. name Firestone Country and Admin Code LR.17.7670839 LR …   World countries Adminstrative division ASC I-II

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”