Username: destrozas
First name: sergio
Category: intermeadilly
Scale: 1/72
Manufacturer: pavla #72011
Model Type: Archangelskij Ar-2
accesory: none
After the limited modernization of SB represented by SB-RK, the Archangelsky bureau was charged of a more radical redesign to reach a speed of 600 km/h.
In 1939, they worked on a new fast bomber for close support of ground troops, called Skorostnoj Bliznyj Bombardirowszczik (fast short-range bomber) rsp. abbreviated SBB-1.
The prototype SBB-1 was equipped with M-105R engines, like MMN and Ar-2.
A performance of 612 km/h at 9.000 m was expected by installing Klimov M-105 TK engines with turbosupercharger, and of 587 km/h at 7.000 m with the new M-106 engines.
When compared to Ar-2, the SBB had :
improved aerodynamics, particularly the nose;
a modified wing construction with decreased span from 18.50m of Ar-2 to 16.00 m, also using a special kind of plywood ("balenit") for to provide better surface quality and save duraluminium; the wing area was reduced from 48.20 sm of Ar-2 to 46.00 sm;
the water radiators were mounted between the spars in the wing centre section; the air outlet was on the wing uppersurface;
a new streamlined nose with greater glazing for the navigator;
a new fuselage back between the pilot's and rear gunner's cabins;
a retractable tailwheel;
the armament of two 7.62 mm ShKAS only, one in navigator's position on the nose, the other one in dorsal position; none ventral gun was installed;
double vertical fins were installed to improve the rearward shooting position;
a new closed rear gun position;
it could carry 600 kgs of bombs in the bomb bay as a normal load, while the max bomb load was 1000 kg (800 in the bomb bay and 200 under the wingroots); this was a regress when compared with 1500 kg of Ar-2. It was projected with dive bombing capability, even if the few photos available don't show any air brake under the wing.
The first prototype (B-1) was built in the Factory No. 22 in Moscow in late1940, and performed its first flight on February 20th, 1941.
Before this first flight, a special commission of experts from TsAGI (Central Aero-Hydrodynamical Institute), VVS (Air Force of the USSR) and NKAP (People´s Commissariat of Aircraft Industry) performed a tactical-technical comparison between PB-100 of Petlyakov (Pe-2 prototype), BB-22PB (Yak-4) of Yakovlev and SBB of Arkhangelsky, for the choice of the future standard medium bomber.
Arkhangelsky´s SBB was not taken into account, because at that date it had not performed any factory tests.
Factory trials started on March 24th and lasted until July 9th 1941, with test pilot Yuri K. Stankiewicz at the controls.
SBB achieved 540 km/h at 4.900 m and climbed to an altitude of 5.000 m in 6 min. 21 s.
Indeed, the performances were lower than planned, but after that some slight construction defects were removed ( including improving of the undercarriage doors and the ejector exhaust tubes) the speed grew by 20 - 25 km/h.
A second prototype, sometimes mentioned as B-2, was built during the summer of 1941. It achieved a speed of 40 - 60 km/h more than the B-1, but it wasn´t tested before the outbreak of war. The machine was planned to serve as a dive bomber.
In comparison with Petlyakov´s PB-100 (Pe-2), the SBB had better starting and landing characteristics and climbed faster. It was recommanded for series production by the test pilot, after troubleshooting. However the Pe-2 was fully satisfying, better armed and already in production.
Any further development was stopped when the war with Germany broke out.
Alexander A. Arkhangelsky was transferred to Factory No. 156 for to organize the repairing of the SB bombers.
the plane made a captured by the Germans during Operation Barbarossa plane, the location and the date is unknown but the funny thing is camouflage green and black that was fighters, something very unusual. Archangelskij Ar-2 profiles.
my kit I'm not proud of the finish but good for I have little time and great great job bringing it made me very long and I entered cravings finish and remove it from the workbench.
First name: sergio
Category: intermeadilly
Scale: 1/72
Manufacturer: pavla #72011
Model Type: Archangelskij Ar-2
accesory: none
After the limited modernization of SB represented by SB-RK, the Archangelsky bureau was charged of a more radical redesign to reach a speed of 600 km/h.
In 1939, they worked on a new fast bomber for close support of ground troops, called Skorostnoj Bliznyj Bombardirowszczik (fast short-range bomber) rsp. abbreviated SBB-1.
The prototype SBB-1 was equipped with M-105R engines, like MMN and Ar-2.
A performance of 612 km/h at 9.000 m was expected by installing Klimov M-105 TK engines with turbosupercharger, and of 587 km/h at 7.000 m with the new M-106 engines.
When compared to Ar-2, the SBB had :
improved aerodynamics, particularly the nose;
a modified wing construction with decreased span from 18.50m of Ar-2 to 16.00 m, also using a special kind of plywood ("balenit") for to provide better surface quality and save duraluminium; the wing area was reduced from 48.20 sm of Ar-2 to 46.00 sm;
the water radiators were mounted between the spars in the wing centre section; the air outlet was on the wing uppersurface;
a new streamlined nose with greater glazing for the navigator;
a new fuselage back between the pilot's and rear gunner's cabins;
a retractable tailwheel;
the armament of two 7.62 mm ShKAS only, one in navigator's position on the nose, the other one in dorsal position; none ventral gun was installed;
double vertical fins were installed to improve the rearward shooting position;
a new closed rear gun position;
it could carry 600 kgs of bombs in the bomb bay as a normal load, while the max bomb load was 1000 kg (800 in the bomb bay and 200 under the wingroots); this was a regress when compared with 1500 kg of Ar-2. It was projected with dive bombing capability, even if the few photos available don't show any air brake under the wing.
The first prototype (B-1) was built in the Factory No. 22 in Moscow in late1940, and performed its first flight on February 20th, 1941.
Before this first flight, a special commission of experts from TsAGI (Central Aero-Hydrodynamical Institute), VVS (Air Force of the USSR) and NKAP (People´s Commissariat of Aircraft Industry) performed a tactical-technical comparison between PB-100 of Petlyakov (Pe-2 prototype), BB-22PB (Yak-4) of Yakovlev and SBB of Arkhangelsky, for the choice of the future standard medium bomber.
Arkhangelsky´s SBB was not taken into account, because at that date it had not performed any factory tests.
Factory trials started on March 24th and lasted until July 9th 1941, with test pilot Yuri K. Stankiewicz at the controls.
SBB achieved 540 km/h at 4.900 m and climbed to an altitude of 5.000 m in 6 min. 21 s.
Indeed, the performances were lower than planned, but after that some slight construction defects were removed ( including improving of the undercarriage doors and the ejector exhaust tubes) the speed grew by 20 - 25 km/h.
A second prototype, sometimes mentioned as B-2, was built during the summer of 1941. It achieved a speed of 40 - 60 km/h more than the B-1, but it wasn´t tested before the outbreak of war. The machine was planned to serve as a dive bomber.
In comparison with Petlyakov´s PB-100 (Pe-2), the SBB had better starting and landing characteristics and climbed faster. It was recommanded for series production by the test pilot, after troubleshooting. However the Pe-2 was fully satisfying, better armed and already in production.
Any further development was stopped when the war with Germany broke out.
Alexander A. Arkhangelsky was transferred to Factory No. 156 for to organize the repairing of the SB bombers.
the plane made a captured by the Germans during Operation Barbarossa plane, the location and the date is unknown but the funny thing is camouflage green and black that was fighters, something very unusual. Archangelskij Ar-2 profiles.
my kit I'm not proud of the finish but good for I have little time and great great job bringing it made me very long and I entered cravings finish and remove it from the workbench.
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