Hawker Hawfinch: Difference between revisions

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{{Use dmy dates|date=November 2017}}
{|{{Infobox Aircraft Begin
{{Use British English|date=November 2017}}
{|{{Infobox aircraft begin
|name = Hawfinch
|name = Hawfinch
|image = File:Hawker Hawfinch.jpg
|image = Hawker Hawfinch.jpg
|caption = <!--image caption; if it isn't descriptive it should be left blank-->
|caption = <!--image caption; if it isn't descriptive it should be left blank-->
}}{{Infobox Aircraft Type
}}{{Infobox aircraft type
|type = Fighter
|type = Fighter
|manufacturer = [[Hawker Aircraft]]
|manufacturer = [[Hawker Aircraft]]
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|}
|}


The '''Hawker Hawfinch''' was a [[United Kingdom|British]] single-engined biplane fighter of the 1920s. It was unsuccessful, with the [[Bristol Bulldog]] being selected instead.
The '''Hawker Hawfinch''' was a British single-engined biplane fighter of the 1920s. It was unsuccessful, with the [[Bristol Bulldog]] being selected instead.


==Development==
==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 [[List of Air Ministry Specifications|Specification F9/26]], together with other aircraft manufacturers, that included nine different designs, of which five were built.<ref name="mason fighter"/> The Hawfinch first flew in March 1927.<ref name="complete fighters">{{cite book |last= Green|first= W |coauthors=Swanborough, G |title= The Complete Book of Fighters |edition= |year= 1994|publisher= Smithmark|location= New York |isbn= 0-8317-3939-8 |page=282}}</ref> 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 as well as being easier to maintain.<ref>Crawford, Alex. ''Bristol Bulldog & Gloster Gauntlet''. (Mushroom Model Magazine #6166). London: Mushroom Model Publications, 2005.</ref> 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.
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 [[List of Air Ministry Specifications|Specification F9/26]], together with other aircraft manufacturers, that included nine different designs, of which five were built.<ref name="mason fighter"/> The Hawfinch first flew in March 1927.<ref name="complete fighters">{{cite book |last= Green|first= W |author2=Swanborough, G |title= The Complete Book of Fighters |year= 1994|publisher= Smithmark|location= New York |isbn= 0-8317-3939-8 |page=282}}</ref> 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 as well as being easier to maintain.<ref>Crawford, Alex. ''Bristol Bulldog & Gloster Gauntlet''. (Mushroom Model Magazine #6166). London: Mushroom Model Publications, 2005.</ref> 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.
Only one prototype was built.


==Description==
==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&nbsp;hp/336&nbsp;kW) before the performance trials. The armament consisted of two [[Vickers machine guns]] synchronised to fire through the propeller.
The 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&nbsp;hp/336&nbsp;kW) before the performance trials. The armament consisted of two [[Vickers machine guns]] synchronised to fire through the propeller.


==Specifications (Hawfinch (Jupiter VII))==
==Specifications (Hawfinch (Jupiter VII))==
{{Aircraft specs
{{aircraft specifications
|ref=<ref name="mason fighter">{{Cite book
|plane or copter?=plane
|author=Mason, Francis K|title=The British Fighter since 1912|publisher=Naval Institute Press|year=1992|pages=188–189|isbn= 1-55750-082-7}}</ref>
|jet or prop?=prop
|prime units?=imp
|ref=The British Fighter since 1912.<ref name="mason fighter">{{Cite book
<!--
|author=Mason, Francis K|title=The British Fighter since 1912|publisher=Naval Institute Press|year=1992|pages=188–189|isbn= 1-55750-082-7}}</ref>
General characteristics
|crew=One
-->
|genhide=

|crew=1
|capacity=
|capacity=
|length main= 23 ft 8 in
|length m=
|length alt= 7.21 m
|length ft=23
|length in=8
|span main= 33 ft 6 in
|span alt= 10.21 m
|span m=
|span ft=33
|height main= 9 ft 4 in
|span in=6
|height alt= 2.84 m
|height m=
|area main= 294 ft²
|height ft=9
|area alt= 27.3 m²
|height in=4
|wing area sqm=
|wing area sqft=294
|wing area note=
|aspect ratio=<!-- sailplanes -->
|airfoil=
|airfoil=
|empty weight main= 1,925 lb
|empty weight kg=
|empty weight alt= 873 kg
|empty weight lb=1925
|loaded weight main= 2,910 lb
|empty weight note=
|loaded weight alt= 1,320 kg
|gross weight kg=
|gross weight lb=2910
|useful load main=
|gross weight note=
|useful load alt=
|fuel capacity=
|max takeoff weight main=
|max takeoff weight alt=
|more general=
|more general=
<!--
|engine (prop)= [[Bristol Jupiter]] VII
Powerplant
|type of prop=9 cylinder [[radial engine]]
-->
|number of props=1
|eng1 number=1
|power main= 450 hp
|eng1 name=[[Bristol Jupiter]] VII
|power alt= 336 kW
|eng1 type=9-cylinder [[radial engine]]
|power original=
|eng1 kw=<!-- prop engines -->
|max speed main= 149 kn
|eng1 hp=450<!-- prop engines -->
|max speed alt= 171 mph, 275 km/h

|max speed more= at 9,800 ft
|prop blade number=<!-- propeller aircraft -->
|cruise speed main=
|prop name=
|cruise speed alt=
|prop dia m=<!-- propeller aircraft -->
|never exceed speed main=
|prop dia ft=<!-- propeller aircraft -->
|never exceed speed alt=
|prop dia in=<!-- propeller aircraft -->
|stall speed main=
|prop note=
|stall speed alt=
<!--
|range main=
Performance
|range alt=
-->
|ceiling main= 24,000 ft
|perfhide=
|ceiling alt= 7,315 m

|climb rate main=
|climb rate alt=
|max speed kmh=
|max speed mph=171
|loading main= 9.90 lb/ft²
|max speed kts=
|loading alt= 48.4 kg/m²
|max speed note=at {{convert|9800|ft|m|abbr=on}}
|thrust/weight=<!-- a unitless ratio -->
|cruise speed kmh=<!-- if max speed unknown -->
|power/mass main= 0.155 hp/lb
|cruise speed mph=<!-- if max speed unknown -->
|power/mass alt= 0.256 kW/kg
|cruise speed kts=
|more performance=*'''Climb to 10,000 ft (3,050 m):''' 7 min 40 sec
|range km=
|armament=
|range miles=
* 2 × 0.303 in (7.7 mm) [[Vickers machine gun]]s
|range nmi=
* Provision for 4 × 20 lb (9 kg) bombs
|endurance=<!-- if range unknown -->
|ceiling m=
|ceiling ft=24000
|climb rate ms=
|climb rate ftmin=
|time to altitude=7 min 40 s to {{convert|10000|ft|m|abbr=on}}
<!--
Armament
-->

|guns=2 × 0.303 in (7.7 mm) [[Vickers machine gun]]s
|bombs=Provision for 4 × 20 lb (9 kg) bombs
|rockets=
|missiles=
|hardpoints=
|hardpoint capacity=
|hardpoint rockets=
|hardpoint missiles=
|hardpoint bombs=
|hardpoint other=

|avionics=
|avionics=
}}
}}
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==References==
==References==
{{commons category|Hawker Hawfinch}}
{{Reflist}}
{{Reflist}}
* {{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= }}
* {{cite book |title= Hawker Aircraft since 1920|last= Mason|first=Francis K. |year=1991 |publisher= Putnam|location=London |isbn=0-85177-839-9 }}


{{Hawker Aircraft aircraft}}
{{Hawker Aircraft aircraft}}
{{aviation lists}}


[[Category:British fighter aircraft 1920–1929]]
[[Category:1920s British fighter aircraft]]
[[Category:Hawker aircraft|Hawfinch]]
[[Category:Hawker aircraft|Hawfinch]]
[[Category:Propeller aircraft]]
[[Category:Single-engined tractor aircraft]]
[[Category:Single-engine aircraft]]
[[Category:Biplanes]]
[[Category:Biplane aircraft]]
[[Category:Aircraft first flown in 1927]]

[[it:Hawker Hawfinch]]
[[sr:Хокер хофинч]]

Latest revision as of 07:03, 20 May 2022

Hawfinch
Role Fighter
Manufacturer Hawker Aircraft
Designer Sydney Camm
First flight March 1927
Status Prototype only
Number built One

The Hawker Hawfinch was a British single-engined biplane fighter of the 1920s. It was unsuccessful, with the Bristol Bulldog being selected instead.

Development[edit]

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.[1] The Hawfinch first flew in March 1927.[2] 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 as well as being easier to maintain.[3] 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[edit]

The 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/336 kW) before the performance trials. The armament consisted of two Vickers machine guns synchronised to fire through the propeller.

Specifications (Hawfinch (Jupiter VII))[edit]

Data from [1]

General characteristics

  • Crew: 1
  • Length: 23 ft 8 in (7.21 m)
  • Wingspan: 33 ft 6 in (10.21 m)
  • Height: 9 ft 4 in (2.84 m)
  • Wing area: 294 sq ft (27.3 m2)
  • Empty weight: 1,925 lb (873 kg)
  • Gross weight: 2,910 lb (1,320 kg)
  • Powerplant: 1 × Bristol Jupiter VII 9-cylinder radial engine, 450 hp (340 kW)

Performance

  • Maximum speed: 171 mph (275 km/h, 149 kn) at 9,800 ft (3,000 m)
  • Service ceiling: 24,000 ft (7,300 m)
  • Time to altitude: 7 min 40 s to 10,000 ft (3,000 m)

Armament

See also[edit]

References[edit]

Wikimedia Commons has media related to Hawker Hawfinch.
  1. ^ a b Mason, Francis K (1992). The British Fighter since 1912. Naval Institute Press. pp. 188–189. ISBN 1-55750-082-7.
  2. ^ Green, W; Swanborough, G (1994). The Complete Book of Fighters. New York: Smithmark. p. 282. ISBN 0-8317-3939-8.
  3. ^ Crawford, Alex. Bristol Bulldog & Gloster Gauntlet. (Mushroom Model Magazine #6166). London: Mushroom Model Publications, 2005.
  • Mason, Francis K. (1991). Hawker Aircraft since 1920. London: Putnam. ISBN 0-85177-839-9.
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