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Vultee A-19
par JiPi2 Dim 20 Déc 2009, 18:14
Vultee A-19
Texte de Wikipedia in english ( rien trouvé en français ! )
The Vultee V-11 and V-12 were [Vous devez être inscrit et connecté pour voir ce lien] of the 1930s.
Developments of the [Vous devez être inscrit et connecté pour voir ce lien] single engined airliner, the V-11 and V-12 were purchased by several nation's armed forces, including [Vous devez être inscrit et connecté pour voir ce lien], who used them in combat against [Vous devez être inscrit et connecté pour voir ce lien] forces in the [Vous devez être inscrit et connecté pour voir ce lien].
The [Vous devez être inscrit et connecté pour voir ce lien] purchased small numbers of the V-11 as the Vultee YA-19 in the years before [Vous devez être inscrit et connecté pour voir ce lien], testing them to gather data to compare against twin engine light attack planes.
Design and development
In 1935, [Vous devez être inscrit et connecté pour voir ce lien] produced a light bomber derivative of their single engined passenger transport, the [Vous devez être inscrit et connecté pour voir ce lien], which, while demonstrating good performance, was only sold in small numbers owing to competition from larger twin engined aircraft such as the [Vous devez être inscrit et connecté pour voir ce lien] and [Vous devez être inscrit et connecté pour voir ce lien] and increasing restrictions on the use of single engined aircraft for scheduled passenger transport operations.
The resulting aircraft, the Vultee V-11, retained the single engined, low wing format and all-metal stressed skin structure of the V-1.
It combined a new fuselage with accommodation for the two or three crew members under a long canopy with the
wings and tail surfaces of the Vultee V-1.
Texte de Wikipedia in english ( rien trouvé en français ! )
The Vultee V-11 and V-12 were [Vous devez être inscrit et connecté pour voir ce lien] of the 1930s.
Developments of the [Vous devez être inscrit et connecté pour voir ce lien] single engined airliner, the V-11 and V-12 were purchased by several nation's armed forces, including [Vous devez être inscrit et connecté pour voir ce lien], who used them in combat against [Vous devez être inscrit et connecté pour voir ce lien] forces in the [Vous devez être inscrit et connecté pour voir ce lien].
The [Vous devez être inscrit et connecté pour voir ce lien] purchased small numbers of the V-11 as the Vultee YA-19 in the years before [Vous devez être inscrit et connecté pour voir ce lien], testing them to gather data to compare against twin engine light attack planes.
Design and development
In 1935, [Vous devez être inscrit et connecté pour voir ce lien] produced a light bomber derivative of their single engined passenger transport, the [Vous devez être inscrit et connecté pour voir ce lien], which, while demonstrating good performance, was only sold in small numbers owing to competition from larger twin engined aircraft such as the [Vous devez être inscrit et connecté pour voir ce lien] and [Vous devez être inscrit et connecté pour voir ce lien] and increasing restrictions on the use of single engined aircraft for scheduled passenger transport operations.
The resulting aircraft, the Vultee V-11, retained the single engined, low wing format and all-metal stressed skin structure of the V-1.
It combined a new fuselage with accommodation for the two or three crew members under a long canopy with the
wings and tail surfaces of the Vultee V-1.
JiPi2- Messages : 970
Re: Vultee A-19
par JiPi2 Dim 20 Déc 2009, 18:22
Operational history
China
An initial order for 30 two seat V-11Gs was placed by [Vous devez être inscrit et connecté pour voir ce lien] before the end of 1935.
This was followed by orders in 1939 for two versions (the V-12-C and V-12D) of the more powerful V-12 variant.
The majority of these were planned to be assembled at the [Vous devez être inscrit et connecté pour voir ce lien] factory at [Vous devez être inscrit et connecté pour voir ce lien] near the China-[Vous devez être inscrit et connecté pour voir ce lien] border, and while the first batch of 25 V-12-Cs were completed successfully, the factory was heavily bombed just after assembly of the first V-12-Ds commenced.
This resulted in the part built airframes being evacuated to [Vous devez être inscrit et connecté pour voir ce lien], where it was planned that the aircraft be completed at the [Vous devez être inscrit et connecté pour voir ce lien] factory in [Vous devez être inscrit et connecté pour voir ce lien].
However, after a few were assembled, production was stopped as the factory was diverted to more urgent overhaul work.
The V-11s and V-12s that were available were used as light bombers to some limited success, including a mission to bomb the Japanese held airfield by 4 A-19's at [Vous devez être inscrit et connecté pour voir ce lien] on February 5, 1939 by the 10th Squadron of the Republic of China Air Force, before the aircraft were retired from frontline bombing missions to training and liaison duties in 1940.
China
An initial order for 30 two seat V-11Gs was placed by [Vous devez être inscrit et connecté pour voir ce lien] before the end of 1935.
This was followed by orders in 1939 for two versions (the V-12-C and V-12D) of the more powerful V-12 variant.
The majority of these were planned to be assembled at the [Vous devez être inscrit et connecté pour voir ce lien] factory at [Vous devez être inscrit et connecté pour voir ce lien] near the China-[Vous devez être inscrit et connecté pour voir ce lien] border, and while the first batch of 25 V-12-Cs were completed successfully, the factory was heavily bombed just after assembly of the first V-12-Ds commenced.
This resulted in the part built airframes being evacuated to [Vous devez être inscrit et connecté pour voir ce lien], where it was planned that the aircraft be completed at the [Vous devez être inscrit et connecté pour voir ce lien] factory in [Vous devez être inscrit et connecté pour voir ce lien].
However, after a few were assembled, production was stopped as the factory was diverted to more urgent overhaul work.
The V-11s and V-12s that were available were used as light bombers to some limited success, including a mission to bomb the Japanese held airfield by 4 A-19's at [Vous devez être inscrit et connecté pour voir ce lien] on February 5, 1939 by the 10th Squadron of the Republic of China Air Force, before the aircraft were retired from frontline bombing missions to training and liaison duties in 1940.
JiPi2- Messages : 970
Re: Vultee A-19
par JiPi2 Dim 20 Déc 2009, 18:27
Soviet Union
In 1936, the [Vous devez être inscrit et connecté pour voir ce lien] purchased a single three-seat V-11-GB aircraft, together with a production license.
The aircraft entered Soviet production in 1937 as the BSh-1 (Bronirovanny Shturmovik), but the armour fitted for the ground attack role resulted in inadequate performance and production was stopped after 31 aircraft.
They were redesignated PS-43 and transferred to [Vous devez être inscrit et connecté pour voir ce lien], who used them as high speed transports until the Germany
invasion in 1941, when they were returned to the [Vous devez être inscrit et connecté pour voir ce lien] who used them for liaison purposes.
United States
In the late 1930s, the [Vous devez être inscrit et connecté pour voir ce lien] favored twin engine light attack aircraft but seven YA-19 aircraft were ordered in the summer of 1938 for comparison purposes.
YA-19s were armed with six .30 in (7.62 mm) machine guns and 1,080 lb (490 kg) bombs in internal bomb bay, powered by a 1,200 hp (895 kW) Twin Wasp radial engine and was manned by a crew of three - pilot, observer/gunner, and bombardier/photographer.
An interesting feature of the YA-19 design was its horizontal stabiliser located entirely forwards of the vertical tail.
The vertical stabilizer caused directional instability (yaw axis) due to undersize.
The last YA-19 (S/N 38-555) was equipped with enlarged vertical stabilizer for improvement of directional stability but performance was not significantly improved.
Service test proved that twin engine attack aircraft had higher speed and carried more armament and larger bomb load.
As a result no further YA-19s were ordered.
After comparison tests five YA-19s were redesignated A-19 and assigned to the 17th Attack Group at March Field in California for a brief period.
Later were transferred to the [Vous devez être inscrit et connecté pour voir ce lien] for utility transport and liaison duties.
The USAAC A-19 was never used in combat and was quickly replaced by more capable attack aircraft in the early 1940s.
In 1936, the [Vous devez être inscrit et connecté pour voir ce lien] purchased a single three-seat V-11-GB aircraft, together with a production license.
The aircraft entered Soviet production in 1937 as the BSh-1 (Bronirovanny Shturmovik), but the armour fitted for the ground attack role resulted in inadequate performance and production was stopped after 31 aircraft.
They were redesignated PS-43 and transferred to [Vous devez être inscrit et connecté pour voir ce lien], who used them as high speed transports until the Germany
invasion in 1941, when they were returned to the [Vous devez être inscrit et connecté pour voir ce lien] who used them for liaison purposes.
United States
In the late 1930s, the [Vous devez être inscrit et connecté pour voir ce lien] favored twin engine light attack aircraft but seven YA-19 aircraft were ordered in the summer of 1938 for comparison purposes.
YA-19s were armed with six .30 in (7.62 mm) machine guns and 1,080 lb (490 kg) bombs in internal bomb bay, powered by a 1,200 hp (895 kW) Twin Wasp radial engine and was manned by a crew of three - pilot, observer/gunner, and bombardier/photographer.
An interesting feature of the YA-19 design was its horizontal stabiliser located entirely forwards of the vertical tail.
The vertical stabilizer caused directional instability (yaw axis) due to undersize.
The last YA-19 (S/N 38-555) was equipped with enlarged vertical stabilizer for improvement of directional stability but performance was not significantly improved.
Service test proved that twin engine attack aircraft had higher speed and carried more armament and larger bomb load.
As a result no further YA-19s were ordered.
After comparison tests five YA-19s were redesignated A-19 and assigned to the 17th Attack Group at March Field in California for a brief period.
Later were transferred to the [Vous devez être inscrit et connecté pour voir ce lien] for utility transport and liaison duties.
The USAAC A-19 was never used in combat and was quickly replaced by more capable attack aircraft in the early 1940s.
JiPi2- Messages : 970
Re: Vultee A-19
par JiPi2 Dim 20 Déc 2009, 18:30
V-11
Two prototypes.
V-11-G
Original two seat light bomber. Powered by one 1,000 hp (746 kW) [Vous devez être inscrit et connecté pour voir ce lien] engine. 30 built for China.
V-11-GB
Three seat version of V-11. Single pattern aircraft purchased by Soviet Union, 40 by [Vous devez être inscrit et connecté pour voir ce lien] and 26 by [Vous devez être inscrit et connecté pour voir ce lien].
BSh-1
Soviet licensed armoured ground attack version. Powered by 920 hp (686 kW) [Vous devez être inscrit et connecté pour voir ce lien]. Production stopped after 31 built.
PS-43
BSh-1 after transfer to Aeroflot as light transport.
YA-19
Variant of V-11-GB for United states Army Air Corps. Five examples built and serialled: 38-549, 38-551 - 38-554.
YA-19A
One YA-19 (S/N 38-555) completed as an engine test bed. Equipped with enlarged vertical stabilizer (for improve directional stability) and powered by Lycoming O-1230 (12 cylinder opposed) engine.
YA-19B
One aircraft (S/N 38-550) fitted with [Vous devez être inscrit et connecté pour voir ce lien] as an engine test bed.
YA-19C
YA-19A (S/N 38-555) fitted with [Vous devez être inscrit et connecté pour voir ce lien] engine.
Performance was similar to the YA-19.
A-19
The remaining five YA-19 were redesignated A-19 after assignment to active duty.
V-12
Revised version of three seat bomber with refined aerodynamics and more power. One prototype flew in 1939 powered by [Vous devez être inscrit et connecté pour voir ce lien] engine.
V-12-C
Production version of V-12 for China. Powered by R1820-G105B Cyclone engine. 26 built, one by Vultee and remaining 25 assembled in China.
V-12-D
Revised version with new fuselage and powered by 1,600 hp (1,190 kW) [Vous devez être inscrit et connecté pour voir ce lien] engine. 52 ordered for China, two pattern aircraft built by Vultee and 50 for local assembly.
Two prototypes.
V-11-G
Original two seat light bomber. Powered by one 1,000 hp (746 kW) [Vous devez être inscrit et connecté pour voir ce lien] engine. 30 built for China.
V-11-GB
Three seat version of V-11. Single pattern aircraft purchased by Soviet Union, 40 by [Vous devez être inscrit et connecté pour voir ce lien] and 26 by [Vous devez être inscrit et connecté pour voir ce lien].
BSh-1
Soviet licensed armoured ground attack version. Powered by 920 hp (686 kW) [Vous devez être inscrit et connecté pour voir ce lien]. Production stopped after 31 built.
PS-43
BSh-1 after transfer to Aeroflot as light transport.
YA-19
Variant of V-11-GB for United states Army Air Corps. Five examples built and serialled: 38-549, 38-551 - 38-554.
YA-19A
One YA-19 (S/N 38-555) completed as an engine test bed. Equipped with enlarged vertical stabilizer (for improve directional stability) and powered by Lycoming O-1230 (12 cylinder opposed) engine.
YA-19B
One aircraft (S/N 38-550) fitted with [Vous devez être inscrit et connecté pour voir ce lien] as an engine test bed.
YA-19C
YA-19A (S/N 38-555) fitted with [Vous devez être inscrit et connecté pour voir ce lien] engine.
Performance was similar to the YA-19.
A-19
The remaining five YA-19 were redesignated A-19 after assignment to active duty.
V-12
Revised version of three seat bomber with refined aerodynamics and more power. One prototype flew in 1939 powered by [Vous devez être inscrit et connecté pour voir ce lien] engine.
V-12-C
Production version of V-12 for China. Powered by R1820-G105B Cyclone engine. 26 built, one by Vultee and remaining 25 assembled in China.
V-12-D
Revised version with new fuselage and powered by 1,600 hp (1,190 kW) [Vous devez être inscrit et connecté pour voir ce lien] engine. 52 ordered for China, two pattern aircraft built by Vultee and 50 for local assembly.
JiPi2- Messages : 970
Re: Vultee A-19
par JiPi2 Dim 20 Déc 2009, 18:32
Specifications (YA-19)
Data from USAF Museum
General characteristics
Performance
Armament
[Vous devez être inscrit et connecté pour voir ce lien]
Data from USAF Museum
General characteristics
- Crew: three
- Length: 37 ft 10 in (11.53 m)
- [Vous devez être inscrit et connecté pour voir ce lien]: 50 ft 0 in (15.24 m)
- Height: 10 ft 0 in (3.05 m)
- [Vous devez être inscrit et connecté pour voir ce lien]: 10,420 lb (4,736 kg)
- Powerplant: 1× [Vous devez être inscrit et connecté pour voir ce lien] 14 cylinder two row [Vous devez être inscrit et connecté pour voir ce lien], 1200 hp (895 kW)
Performance
- [Vous devez être inscrit et connecté pour voir ce lien]: 200 knots (230 mph, 370 km/h)
- [Vous devez être inscrit et connecté pour voir ce lien]: 1,174 NM (1,350 mi, 2,174 km) ferry range
- [Vous devez être inscrit et connecté pour voir ce lien]: 20,500 ft (6,250 m)
Armament
- 4 x forward-firing .30 calibre [Vous devez être inscrit et connecté pour voir ce lien]
- 1 x aft-firing .30 calibre machine gun
- 1 x ventral .30 calibre machine gun
- 1,080 lbs bombs in internal bay
[Vous devez être inscrit et connecté pour voir ce lien]
JiPi2- Messages : 970
Re: Vultee A-19
par Roberto Sam 16 Oct 2010, 08:42
[Vous devez être inscrit et connecté pour voir ce lien]
The Vultee YA-19 was an Air Corps service test version of the company financed V11.
Seven aircraft were ordered in the summer of 1938, and it - made its first flight onJan. 27, 1939.
The YA-19 was similar to the [Vous devez être inscrit et connecté pour voir ce lien]; however, it carried a crew of three: pilot, observer/gunner, and bombardier/photographer.
The aircraft was powered by a 1200-hp Twin Wasp radial engine and had six .30-cal. machine guns installed -- four forward-firing machine guns operated by the pilot, one .30-cal. flexible machine gun manned by the rear gunner and a ventral-mount .30-cal. machine gun operated by the bombardier/photographer.
The YA-19 had a rather unusual tail.
The horizontal stabilizer was on top of the fuselage and completely forward of the vertical stabilizer.
The vertical stabilizer/rudder was undersized and caused directional stability problems (yaw axis).
Roberto- CLUB
- Messages : 512
Localisation : Italia
Re: Vultee A-19
par Roberto Sam 16 Oct 2010, 08:43
The Air Corps ordered the YA-19s to gather test data to compare against the twin engine light attack planes coming into favor with the Army general staff (i.e. Douglas A-20).
The twin engine designs were clearly superior to the single engine attack aircraft in speed, armament and bomb load.
As a result, no additional orders were placed for the YA-19.
Roberto- CLUB
- Messages : 512
Localisation : Italia
Re: Vultee A-19
par Roberto Sam 16 Oct 2010, 08:45
[Vous devez être inscrit et connecté pour voir ce lien]
After service testing was completed. Five YA-19s were assigned to the 17th Attack Group at March Field, Calif.
The aircraft were only assigned briefly before being transferred to the Canal Zone as utility transport/liaison aircraft.
While in operational service the aircraft were designated A-19s.
The A-19 was never used in combat and was quickly replaced by more capable attack aircraft in the early 1940s.
Two YA-19s were modified to test various engine configurations.
One aircraft was fitted with a Lycoming O-1230 (12 cylinder opposed) engine.
The vertical stabilizer on this aircraft, designated XA-19A, was also enlarged. Later, the engine was changed to an upgraded version of the Pratt & Whitney Twin Wasp and designated XA-19C.
A second YA-19 was used as an engine test bed for the Pratt & Whitney R-2800 radial engine and designated XA-19B.
Roberto- CLUB
- Messages : 512
Localisation : Italia
Re: Vultee A-19
par Roberto Sam 16 Oct 2010, 08:47
Et la site russe :
[Vous devez être inscrit et connecté pour voir ce lien]
[Vous devez être inscrit et connecté pour voir ce lien]
Летом 1935г. состоялся первый полет опытного образца штурмовика-бомбардировщика Vultee V-11. Конструкция крыла и шасси у него была той же, что и у V-1A, но хвостовое оперение было изменено; кроме того, новый фюзеляж имел эллиптическое поперечное сечение и длинный высокий фонарь, закрывавший обе кабины пилотов................
Roberto- CLUB
- Messages : 512
Localisation : Italia
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aeronewsline :: Accueil :: Histoire :: Aéronefs 1940 à 1944
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