Barkley-Grow T8P-1

Infobox Aircraft
name=T8P-1


caption= CF-BLV while under resotration at the Alberta Aviation Museum, Edmonton, Alberta c. 2000
type=Airliner
manufacturer=Barkley-Grow
designer=Archibald Barkley
first flight=April 1937
introduced=
retired=
status=
primary user=
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produced=
number built=11
variants with their own articles=The Barkley-Grow T8P-1 was an airliner developed in the United States shortly before the Second World War. Although it saw limited production, the type was well-received as a bush plane in Canada.

Design and development

Typical for the era, the Barkley-Grow T8P-1 was a low-wing monoplane of all-metal construction with a twin tail (some models had an additional third tail, a la Lockheed Constellation). One slight anachronism was that the main units of the tailwheel undercarriage were not retractable, and this may have negatively impacted the type's reception in the marketplace. A novel design feature, however, was the wing structure. Barkley used a multi-spar approach, dispensing with the usual ribs or bulkheads. Like its two main competitors, the Lockheed Model 12 Electra Junior and the Beech 18, the T8P-1 was originally designed to a 1935 Bureau of Air Commerce specification (eventually won by the Lockheed entry).

Operational history

Sales in the US were disappointing, and most machines were sold to Canada, where the fixed undercarriage was no obstacle to the fitting of skis or pontoons. Three examples are preserved at the Aero Space Museum, Calgary, Reynolds-Alberta Museum, Wetaskiwin, and at the Alberta Aviation Museum, Edmonton.

pecifications

aerospecs
met or eng?= eng

crew=two pilots
capacity=6 passengers "or" 1,397 (634 kg) of cargo
length m=11.02
length ft=36
length in=2
span m=15.44
span ft=50
span in=8
dia m=
dia ft=
dia in=
height m=2.95
height ft=9
height in=8
wing area sqm=32.9
wing area sqft=354
rot area sqm=
rot area sqft=
aspect ratio=
empty weight kg=2,608
empty weight lb=5,750
gross weight kg=3,742
gross weight lb=8,250

eng1 number=2
eng1 type=Pratt & Whitney Wasp Junior SB radial engines
eng1 kw= 336
eng1 hp= 450
eng1 kn=
eng1 lbf=
eng1 kn-ab=
eng1 lbf-ab=
eng2 number=
eng2 type=
eng2 kw=
eng2 hp=
eng2 kn=
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eng2 kn-ab=
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max speed kmh=360
max speed mph=224
max speed mach=
cruise speed kmh=
cruise speed mph=
range km=756
range miles=470
endurance h=
endurance min=
ceiling m=8,230
ceiling ft=27,000
glide ratio=
climb rate ms=7.2
climb rate ftmin=1,420
sink rate ms=
sink rate ftmin=

armament1=
armament2=
armament3=
armament4=
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References

* Gerritmas, Joop and Harm, Hazewinkel. "The Barkley-Grow T8P-1." "AAHS Journal" 50 (4), 2005.
* Taylor, J.H. "Jane's Encyclopedia of Aviation". London: Studio Editions, 1989, p. 121. ISBN 0-51710-316-8.
* "World Aircraft Information Files (File 890 Sheet 02)". London: Bright Star Publishing.

External links

* [http://www.aahs-online.org/BackIssues/v50n4/Imagev50n4_2.htm Barkley-Grow T8P-1, CF-BLV, in a factory photo from a 1938 brochure]
* [http://www.ruudleeuw.com/alcan06-aerospacemuseum.htm Calgary Aero Space Museum 2006]

ee also

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