Bristol Braemar: Difference between revisions

From Wikipedia, the free encyclopedia
Browse history interactively
← Previous editNext edit →
Content deleted Content added
VisualWikitext
Reverted 1 edit by Falsetto202 (talk): Revert per G5 - user is prolific sockmaster and indeffed user Joseph Prasad. (TW)
No edit summary
Line 2: Line 2:
{|{{Infobox Aircraft Begin
{|{{Infobox Aircraft Begin
|name=Bristol Types 24 and 25 Braemar
|name=Bristol Types 24 and 25 Braemar
|image=Bristol Braemar.jpg
|image=
|caption=Braemar second prototype, 1919
|caption=
}}{{Infobox Aircraft Type
}}{{Infobox Aircraft Type
|type=[[Heavy bomber]]
|type=[[Heavy bomber]]
|manufacturer=[[Bristol Aeroplane Company]]
|manufacturer=[[Bristol Aeroplane Company]]
|national origin=United Kingdom
|designer=[[Frank Barnwell]]
|designer=[[Frank Barnwell]]
|first flight=13 August 1918
|first flight=1918-08-13
|introduced=
|introduced=
|retired=
|retired=
Line 30: Line 29:
The initial design featured a unique engine installation with a central engine room housing all four engines. The engines were to be geared in pairs and power taken from the engines to the four propellers by power shafts. This design was abandoned early in development, and both the completed Braemars had a conventional engine installation, with the engines in inline tandem pairs, driving [[Push-pull configuration|pusher and tractor propellers]]. However, the engine-room design was resurrected later in the Braemar's development life, for the proposed steam-powered [[Bristol Tramp|Tramp]].
The initial design featured a unique engine installation with a central engine room housing all four engines. The engines were to be geared in pairs and power taken from the engines to the four propellers by power shafts. This design was abandoned early in development, and both the completed Braemars had a conventional engine installation, with the engines in inline tandem pairs, driving [[Push-pull configuration|pusher and tractor propellers]]. However, the engine-room design was resurrected later in the Braemar's development life, for the proposed steam-powered [[Bristol Tramp|Tramp]].


A contract from the Air Board for three prototypes was awarded to Bristol & Colonial on 26 February 1918. The first prototype Braemar flew on 13 August 1918, with four {{convert|230|hp|kW|abbr=on}} [[Siddeley Puma]] engines. The prototype showed generally good performance with a top speed of {{convert|106|mph|km/h|abbr=on}}, but there were complaints from the test pilots about the view from the cockpit and the controls,<ref>The pilots were no longer able to feel sideslip through the wind on their faces ([http://www.flightglobal.com/pdfarchive/view/1960/1960%20-%200208.html ''Flight'' 12 February 1960 p208])</ref> and so the next aircraft produced was an improved version designated Braemar Mk.II. The Mk.II received considerably more power from its four {{convert|400|hp|kW|abbr=on}} [[Liberty L-12]] engines, which gave it an improved speed of {{convert|125|mph|km/h|abbr=on}}.
The first prototype Braemar flew on 13 August 1917, with four [[Siddeley Puma]] engines of 230&nbsp;hp (170&nbsp;kW) each. The prototype showed generally good performance with a top speed of 106&nbsp;mph (171&nbsp;km/h), but there were complaints from the test pilots about the view from the cockpit and the controls, and so the next aircraft produced was an improved version designated Braemar Mk.II. The Mk.II had considerably more power, in its four [[Liberty L-12]] engines of 400&nbsp;hp (300&nbsp;kW), which gave it an improved speed of 125&nbsp;mph (201&nbsp;km/h).


The Braemar never entered service with the RAF, and the two prototypes were the only Braemars built. The third prototype was completed as a [[Bristol Pullman|Pullman]] 14-passenger civil transport.
The Braemar never entered service with the RAF, and the two prototypes were the only Braemars built. The Braemar design was subsequently developed as the [[Bristol Pullman|Pullman]] passenger aircraft.

==Variants==
[[File:Bristol-Braemar-1919.jpg|thumb|right|The Bristol Braemar II photographed in flight, 1919.]]
;Type 24 Braemar I
:Prototype with four {{convert|230|hp|kW|0|abbr=on}} [[Siddeley Puma]] engines, one built first flown 13 March 1918.
;Type 25 Braemer II
:Prototype with four {{convert|400|hp|kW|0|abbr=on}} [[Liberty L-12]] engines, one built first flown 18 February 1919.
; [[Bristol Pullman|Type 26 Pullman]]
:14-passenger civil transport variant with Liberty L-12 engines, one built first flown in May 1920.


==Specifications (Braemar Mk.II)==
==Specifications (Braemar Mk.II)==
Line 50: Line 40:
|jet or prop?=prop
|jet or prop?=prop
<!-- Now, fill out the specs. Please include units where appropriate (main comes first, alt in parentheses). If an item doesn't apply, like capacity, leave it blank. For additional lines, end your alt units with a right parenthesis ")" and start a new, fully-formatted line beginning with an asterisk "*" -->
<!-- Now, fill out the specs. Please include units where appropriate (main comes first, alt in parentheses). If an item doesn't apply, like capacity, leave it blank. For additional lines, end your alt units with a right parenthesis ")" and start a new, fully-formatted line beginning with an asterisk "*" -->
|ref={{Fact|date=May 2008}}
|ref=Barnes C.H. (1964), p.142
|crew=six - two pilots, wireless operator, engineer and two gunners
|crew=6 - two pilots, wireless operator, engineer and two gunners
|capacity=
|capacity=
|length main=51 ft 6 in
|length main=51 ft 6 in
Line 78: Line 68:
|cruise speed alt=<!-- knots, km/h-->
|cruise speed alt=<!-- knots, km/h-->
|range main=more than 1,000 mi
|range main=more than 1,000 mi
|range alt=1,600 km
|range alt=
|ceiling main=17,000 ft
|ceiling main=17,000 ft
|ceiling alt=5,100 m
|ceiling alt=5,100 m
Line 94: Line 84:
{{Aircontent
{{Aircontent
|related=
|related=
* [[Bristol Pullman]]
* [[Bristol Pullman|Bristol Types 26 and 33 Pullman]]
* [[Bristol Tramp]]
* [[Bristol Tramp|Bristol Types 37 and 44 Tramp]]
|similar aircraft=*[[Vickers Vimy]]<br />
|similar aircraft=*[[Vickers Vimy]]<br />
*[[Handley Page V/1500]]
*[[Handley Page V/1500]]
Line 104: Line 94:


==References==
==References==
<!--See http://en.wikipedia.org/wiki/Wikipedia:Footnotes for an explanation of how to generate footnotes using the <ref(erences/)> tags-->
{{commons category|Bristol Braemar}}
<div class="references-small">
;Notes
<references/>
{{Research help|Mil}}
⚫
* {{cite book|author=Barnes C.H.|year=1964|title=Bristol Aircraft Since 1910|publisher=Putnam & Company Ltd|id=ISBN 0-370-00015-3}}
{{reflist}}
</div>
;Bibliography
⚫
* {{cite book|author=Barnes C.H.|year=1964|title=Bristol Aircraft Since 1910|publisher=Putnam & Company Ltd|isbn=0-370-00015-3}}
* {{citation |url=http://www.flightglobal.com/pdfarchive/view/1942/1942%20-%200525.html |title=Two Tri-Quads |date=5 March 1942 |journal=Flight |page=209 }}


{{Bristol aircraft}}
{{Bristol aircraft}}
{{Aviation lists}}


[[Category:Cancelled military aircraft projects of the United Kingdom]]
[[Category:Abandoned military aircraft projects of the United Kingdom]]
[[Category:Bristol Aeroplane Company aircraft|Braemar]]
[[Category:Bristol aircraft|Braemar]]
[[Category:British bomber aircraft 1910–1919]]
[[Category:British bomber aircraft 1910–1919]]
[[Category:Four-engined push-pull aircraft]]
[[Category:Push-pull aircraft]]
[[Category:Triplanes]]
[[Category:Triplane aircraft]]

Revision as of 20:23, 3 August 2016

Bristol Types 24 and 25 Braemar
Role Heavy bomber
Manufacturer Bristol Aeroplane Company
Designer Frank Barnwell
First flight 1918-08-13
Number built 2
Developed into Bristol Pullman

The Bristol Braemar was a British heavy bomber aircraft developed at the end of the First World War for the Royal Air Force. Only two prototypes were constructed.

Development

The prototype Braemar was developed in response to the establishment of the Independent Air Force in October 1917, as a bomber capable of the long-range bombing of Berlin if necessary. A large triplane, it had internal stowage for up to six 250 lb (110 kg) bombs.

The initial design featured a unique engine installation with a central engine room housing all four engines. The engines were to be geared in pairs and power taken from the engines to the four propellers by power shafts. This design was abandoned early in development, and both the completed Braemars had a conventional engine installation, with the engines in inline tandem pairs, driving pusher and tractor propellers. However, the engine-room design was resurrected later in the Braemar's development life, for the proposed steam-powered Tramp.

The first prototype Braemar flew on 13 August 1917, with four Siddeley Puma engines of 230 hp (170 kW) each. The prototype showed generally good performance with a top speed of 106 mph (171 km/h), but there were complaints from the test pilots about the view from the cockpit and the controls, and so the next aircraft produced was an improved version designated Braemar Mk.II. The Mk.II had considerably more power, in its four Liberty L-12 engines of 400 hp (300 kW), which gave it an improved speed of 125 mph (201 km/h).

The Braemar never entered service with the RAF, and the two prototypes were the only Braemars built. The Braemar design was subsequently developed as the Pullman passenger aircraft.

Specifications (Braemar Mk.II)

Data from [citation needed]

General characteristics

  • Crew: 6 - two pilots, wireless operator, engineer and two gunners

Performance Armament

  • Guns: 2 × 0.303 in (7.7 mm) machine guns
  • Bombs: 1,500 lb (680 kg)

See also

Related development

Aircraft of comparable role, configuration, and era

Related lists

References

  • Barnes C.H. (1964). Bristol Aircraft Since 1910. Putnam & Company Ltd. ISBN 0-370-00015-3.
Retrieved from "https://en.wikipedia.org/w/index.php?title=Bristol_Braemar&oldid=732874344"