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The '''Bristol Type 6 T.T.A''' was a British two seat, twin engined biplane designed in 1915 as a defence fighter. Two prototypes were built, but the T.T. did not go into production.
The '''Bristol Type 6 T.T.A''' was a [[United Kingdom|British]] two-seat, twin-engine [[biplane]] designed in 1915 as a defence [[Fighter aircraft|fighter]]. Two prototypes were built, but the T.T. did not go into production.


==Development==
==Development==
The Bristol T.T.A was designed in 1915 to a [[War Office]] requirement for a local defence aircraft. The T.T.A was a two seat, twin engined biplane with ''T.T.'' standing for twin tractor; the Bristol Type number 6 was added retrospectively in 1923<ref name="Barnes">{{Harvnb|Barnes|1964|p=384}}</ref>. The guiding principles in the design were compactness and a wide field of fire from both cockpits.
The Bristol T.T.A was designed in 1915 to a [[War Office]] requirement for a local defence aircraft. The T.T.A was a two-seat, twin-engine biplane with ''T.T.'' standing for twin [[Tractor configuration|tractor]]; the Bristol Type number 6 was added retrospectively in 1923<ref name="Barnes">{{Harvnb|Barnes|1964|p=384}}</ref>. The guiding principles in the design were compactness and a wide field of fire from both cockpits.


The T.T.A<ref>{{Harvnb|Barnes|1964|p=101-3}}</ref> was an unswept biplane with slight stagger, the wings having constant chord and carrying long ailerons on the upper planes. The wings were of three bay construction, the inner interplane struts supporting the engines in rectangular nacelles mid-way between the wings. Twin wheeled undercarriage units were mounted below each engine, with a tailskid and a nose skid to prevent nosing over. The large area tailplane was the same shape as that of the [[Bristol Scout|Scout D]], with the same unbalanced elevators, but the finless rudder was balanced. The gunner sat in a cockpit right in the nose of the aircraft, armed with two free-mounted [[Lewis gun]]s. The pilot, sited behind the wing trailing edge, had a rear pointing Lewis gun.
The T.T.A<ref>{{Harvnb|Barnes|1964|p=101-3}}</ref> was an [[Swept wing|unswept]] biplane with slight [[Stagger (aviation)|stagger]], the wings having constant [[Chord (aircraft)|chord]] and carrying long [[aileron]]s on the upper planes. The wings were of three-bay construction, the inner [[interplane strut]]s supporting the engines in rectangular nacelles mid-way between the wings. Twin-wheeled [[undercarriage]] units were mounted below each engine, with a tailskid and a nose skid to prevent nosing over. The large area [[tailplane]] was the same shape as that of the [[Bristol Scout|Scout D]], with the same unbalanced [[Elevator (aircraft)|elevator]]s, but the finless [[rudder]] was balanced. The gunner sat in a cockpit right in the nose of the aircraft, armed with two free-mounted .303&nbsp;in (7.7&nbsp;mm) [[Lewis Gun]]s. The pilot, sited behind the wing trailing edge, had a rear pointing Lewis gun.


The original design (the Bristol T.T.) envisaged the use of two 150 hp (112 kW) [[R.A.F. 4]]a engines, but the [[B.E.12]] and [[R.E.8]] aircraft had been given priority for these engines and Bristol were advised to use 120 hp (90 kW) [[William Beardmore and Company|Beardmore]] engines. With these engines the aircraft was designated T.T.A , two prototypes were ordered and the first completed on the 26 April 1916. The second followed in May, and both aircraft flew to [[RAF Upavon|Upavon]] for service tests. Top speed and climb rate were better than the T.T.'s higher powered but larger competitor, the [[F.E.4]], but the aircraft was not liked and gained no production orders.
The original design (the Bristol T.T.) envisaged the use of two 150&nbsp;hp (110&nbsp;kW) [[R.A.F. 4]]a engines, but the [[B.E.12]] and [[R.E.8]] aircraft had been given priority for these engines and Bristol were advised to use 120&nbsp;hp (90&nbsp;kW) [[William Beardmore and Company|Beardmore]] engines. With these engines, the aircraft was designated T.T.A , two prototypes were ordered and the first completed on the 26 April 1916. The second followed in May, and both aircraft flew to [[RAF Upavon|Upavon]] for service tests. Top speed and climb rate were better than the T.T.'s higher powered but larger competitor, the [[F.E.4]], but the aircraft was not liked and gained no production orders.
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==Specifications ==


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==Specifications==
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{{aerospecs
{{aerospecs
|ref=Barnes 1964 p.103<!-- reference -->
|ref=Barnes 1964 p.103<!-- reference -->
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|met or eng?=eng<!-- eng for US/UK aircraft, met for all others. You MUST include one or the other here, or no specifications will show -->

|crew=2
|crew=2
|capacity=
|capacity=
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|span ft=53
|span ft=53
|span in=6
|span in=6
|swept m=<!-- swing-wings -->
|swept ft=<!-- swing-wings -->
|swept in=<!-- swing-wings -->
|rot number=<!-- helicopters -->
|rot dia m=<!-- helicopters -->
|rot dia ft=<!-- helicopters -->
|rot dia in=<!-- helicopters -->
|dia m=<!-- airships etc -->
|dia ft=<!-- airships etc -->
|dia in=<!-- airships etc -->
|width m=<!-- if applicable -->
|width m=<!-- if applicable -->
|width ft=<!-- if applicable -->
|width ft=<!-- if applicable -->
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|wing area sqm=75.9
|wing area sqm=75.9
|wing area sqft=817
|wing area sqft=817
|swept area sqm=<!-- swing-wings -->
|swept area sqft=<!-- swing-wings -->
|rot area sqm=<!-- helicopters -->
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|volume m3=<!-- lighter-than-air -->
|volume ft3=<!-- lighter-than-air -->
|aspect ratio=<!-- sailplanes -->
|wing profile=<!-- sailplanes -->
|empty weight kg=1,164
|empty weight lb=3,820
|empty weight lb=3,820
|gross weight kg=2,313
|gross weight kg=2,313
|gross weight lb=5,100
|gross weight lb=5,100
|lift kg=<!-- lighter-than-air -->
|lift lb=<!-- lighter-than-air -->

|eng1 number=2
|eng1 number=2
|eng1 type=[[William Beardmore and Company|Beardmore]] water-cooled inline
|eng1 type=[[William Beardmore and Company|Beardmore]] water-cooled inline
|eng1 kw=90<!-- prop engines -->
|eng1 kw=90<!-- prop engines -->
|eng1 hp=120<!-- prop engines -->
|eng1 hp=120<!-- prop engines -->
|eng1 kn=<!-- jet/rocket engines -->
|eng1 lbf=<!-- jet/rocket engines -->
|eng1 kn-ab=<!-- afterburners -->
|eng1 lbf-ab=<!-- afterburners -->
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|eng2 number=
|eng2 type=
|eng2 type=
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|max speed kmh=140
|max speed kmh=140
|max speed mph=87
|max speed mph=87
|max speed mach=<!-- supersonic aircraft -->
|cruise speed kmh=<!-- if max speed unknown -->
|cruise speed kmh=<!-- if max speed unknown -->
|cruise speed mph=<!-- if max speed unknown -->
|cruise speed mph=<!-- if max speed unknown -->
|stall speed kmh=<!-- aerobatic and STOL aircraft -->
|stall speed mph=<!-- aerobatic and STOL aircraft -->
|range km=
|range km=
|range miles=
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|ceiling m=
|ceiling m=
|ceiling ft=
|ceiling ft=
|g limits=<!-- aerobatic aircraft -->
|roll rate=<!-- aerobatic aircraft -->
|glide ratio=<!-- sailplanes -->
|climb rate ms=2.0
|climb rate ms=2.0
|climb rate ftmin=<ref>{{Harvnb|Barnes|1964|p=102}}</ref> nearly 400
|climb rate ftmin=<ref>{{Harvnb|Barnes|1964|p=102}}</ref> nearly 400
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|armament1=2 × 0.303 in (7.7 mm) Lewis guns in forward cockpit
|sink rate ms=<!-- sailplanes -->
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|armament2=1 × 0.303 in (7.7 mm) Lewis guns in pilot's cockpit
|sink rate ftmin=<!-- sailplanes -->

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|armament1=2×0.303 in (7.7 mm) Lewis guns in forward cockpit
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|armament2=1×0.303 in (7.7 mm) Lewis guns in pilot's cockpit
|armament3=
|armament3=
|armament4=
|armament4=
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|lists=<!-- related lists -->
}}
}}

==References==
==References==
;Notes
===Notes===
{{reflist}}
{{reflist}}

;Bibliography
===Bibliography===
{{refbegin}}
{{refbegin}}
*{{cite book |title= Bristol Aircraft since 1910|last= Barnes|first=C. H. |authorlink= |coauthors= |year=1964 |publisher=Putnam Publishing |location=London |isbn= 0 370 00015 6|page= |pages= |url= }}
*{{cite book |title= Bristol Aircraft since 1910|last= Barnes|first=C. H. |authorlink= |coauthors= |year=1964 |publisher=Putnam Publishing |location=London |isbn= 0 370 00015 6|page= |pages= |url= }}
{{refend}}
{{refend}}

<!-- ==External links== -->
<!-- ==External links== -->

{{Bristol aircraft|T.T.A}}
{{Bristol aircraft|T.T.A}}
{{Aviation lists}}
{{Aviation lists}}

Revision as of 17:46, 6 May 2009

T.T.A
Role Two seat fighter
National origin United Kingdom
Manufacturer British & Colonial Aeroplane Co
Designer F. Barnwell & L.G. Frise
First flight 26 April 1916
Number built 2

The Bristol Type 6 T.T.A was a British two-seat, twin-engine biplane designed in 1915 as a defence fighter. Two prototypes were built, but the T.T. did not go into production.

Development

The Bristol T.T.A was designed in 1915 to a War Office requirement for a local defence aircraft. The T.T.A was a two-seat, twin-engine biplane with T.T. standing for twin tractor; the Bristol Type number 6 was added retrospectively in 1923[1]. The guiding principles in the design were compactness and a wide field of fire from both cockpits.

The T.T.A[2] was an unswept biplane with slight stagger, the wings having constant chord and carrying long ailerons on the upper planes. The wings were of three-bay construction, the inner interplane struts supporting the engines in rectangular nacelles mid-way between the wings. Twin-wheeled undercarriage units were mounted below each engine, with a tailskid and a nose skid to prevent nosing over. The large area tailplane was the same shape as that of the Scout D, with the same unbalanced elevators, but the finless rudder was balanced. The gunner sat in a cockpit right in the nose of the aircraft, armed with two free-mounted .303 in (7.7 mm) Lewis Guns. The pilot, sited behind the wing trailing edge, had a rear pointing Lewis gun.

The original design (the Bristol T.T.) envisaged the use of two 150 hp (110 kW) R.A.F. 4a engines, but the B.E.12 and R.E.8 aircraft had been given priority for these engines and Bristol were advised to use 120 hp (90 kW) Beardmore engines. With these engines, the aircraft was designated T.T.A , two prototypes were ordered and the first completed on the 26 April 1916. The second followed in May, and both aircraft flew to Upavon for service tests. Top speed and climb rate were better than the T.T.'s higher powered but larger competitor, the F.E.4, but the aircraft was not liked and gained no production orders.

Specifications

Data from Barnes 1964 p.103

General characteristics

  • Crew: 2

Performance

References

Notes

  1. ^ Barnes 1964, p. 384
  2. ^ Barnes 1964, p. 101-3
  3. ^ Barnes 1964, p. 102

Bibliography

  • Barnes, C. H. (1964). Bristol Aircraft since 1910. London: Putnam Publishing. ISBN 0 370 00015 6. {{cite book}}: Check |isbn= value: checksum (help); Cite has empty unknown parameter: |coauthors= (help)
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