Hawker Hawfinch

infobox Aircraft
name = Hawfinch
type = Fighter
manufacturer = Hawker Aircraft


caption =
designer = Sydney Camm
first flight = March 1927
introduction =
retired =
status = Prototype only
primary user =
more users =
produced =
number built = One
unit cost =
developed from =
variants with their own articles = The Hawker Hawfinch was a British single engined biplane fighter of the 1920's. It was unsuccessful, with the Bristol Bulldog being selected instead.

Development

The Hawker Hawfinch fighter aircraft was designed in 1925 as a replacement for both the Armstrong-Whitworth Siskin and the Gloster Gamecock fighters. It participated in the competition to meet Specification F9/26, together with other aircraft manufacturers, that included nine different designs, of which five were built . The Hawfinch first flew in March 1927 cite book |last= Green|first= W |coauthors=Swanborough, G |title= The Complete Book of Fighters |edition= |year= 1994|publisher= Smithmark|location= New York |pages=p.282 |isbn= 0-8317-3939-8. The Bristol Bulldog and the Hawfinch were considered to be the best of the aircraft evaluated, and were selected for more detailed evaluation. The contract was finally awarded to the Bristol Bulldog, because of its slightly higher maximum speed. After the completion of the competition, the prototype Hawfinch was used for experimental purposes, being tested with single bay wings and with a twin float undercarriage.

Only one prototype was built.

Description

Twe Hawfinch was a two bay biplane with staggered wings. The structure was the patented Hawker metal tube & "fishplate" system, with fabric covering. It was the first all-metal fighter to be built by Hawker. The powerplant was initially a Bristol Jupiter VI engine, but this was changed to a Jupiter VII (450 hp) before the performance trials. The armament consisted of two Vickers machine guns synchronised to fire through the propeller.

pecifications (Hawfinch (Jupiter VII))

aircraft specifications

plane or copter?=plane
jet or prop?=prop

ref=The British Fighter since 1912 Cite book
author=Mason, Francis K|title=The British Fighter since 1912|publisher=Naval Institute Press|year=1992|pages=p. 188-189|isbn= ISBN 1-55750-082-7.

crew=One
capacity=
length main= 23 ft 8 in
length alt= 7.21 m
span main= 33 ft 6 in
span alt= 10.21 m
height main= 9 ft 4 in
height alt= 2.84 m
area main= 294 ft²
area alt= 27.3 m²
airfoil=
empty weight main= 1,925 lb
empty weight alt= 873 kg
loaded weight main= 2,910 lb
loaded weight alt= 1,320 kg
useful load main=
useful load alt=
max takeoff weight main=
max takeoff weight alt=
more general=

engine (prop)= Bristol Jupiter VII
type of prop=9 cylinder radial engine
number of props=1
power main= 450 hp
power alt= 336 kW
power original=
max speed main= 149 knots
max speed alt= 171 mph, 275 km/h
max speed more= at 9,800 ft
cruise speed main=
cruise speed alt=
never exceed speed main=
never exceed speed alt=
stall speed main=
stall speed alt=
range main=
range alt=
ceiling main= 24,000 ft
ceiling alt= 7,315 m
climb rate main=
climb rate alt=
loading main= 9.90 lb/ft²
loading alt= 48.4 kg/m²
thrust/weight=
power/mass main= 0.155 hp/lb
power/mass alt= 0.256 kW/kg
more performance=*Climb to 10,000 ft (3,050 m): 7 min 40 sec

armament=
* Two 0.303 in (7.7 mm) Vickers machine guns
* Provision for four 20 lb bombs

avionics=

References

* cite book |title= Hawker Aircraft since 1920|last= Mason|first=Francis K. |authorlink= |coauthors= |year=1991 |publisher= Putnam|location=London |isbn=0 85177 839 9 |pages= |url=

ee also

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