Tupolev ANT-3 / R-3
1925
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Tupolev ANT-3 / R-3

The prototype flew for the first time in August 1925. An unequal-span biplane, intended for reconnaissance duties, it was of all-metal construction with corrugated sheet covering. The original 298kW Liberty engine was replaced by a 336kW Napier Lion, the aircraft then being redesignated R-3NL The first 12 series aircraft had Liberty engines but the next 18 had the Soviet development of this powerplant, which was designated M-5. The final 79 aircraft with the 336kW Lorraine Dietrich engine were designated R-3LD, and one ANT-3 was tested with a 507kW BMW VI. Most R-3s saw military service, but a few retaining the ANT-3 designation were flown as mailplanes or used for liaison and for propaganda flights. The R-3LD version had a maximum speed of 205km/h, was armed with three 7.7mm machine-guns and could carry 10 10kg bombs on external racks. Plans for a Shturmovik version with 400kg of armour protection came to nothing.

3-View 
Tupolev ANT-3 / R-3A three-view drawing (552 x 782)


Specification 
 MODELANT-3
 CREW2
 ENGINE1 x M-5,
 WEIGHTS
    Take-off weight2103 kg4636 lb
    Empty weight1351 kg2978 lb
 DIMENSIONS
    Wingspan13.0 m43 ft 8 in
    Length9.9 m33 ft 6 in
    Height3.9 m13 ft 10 in
    Wing area36.0 m2387.50 sq ft
 PERFORMANCE
    Max. speed204 km/h127 mph
    Ceiling4600 m15100 ft
    Range750 km466 miles
 ARMAMENT3 x 7.62mm machine-guns

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