1920s Soviet reconnaissance flying boat
The Grigorovich MR-5 was a long-range reconnaissance flying boat designed by the Grigorovich Design Bureau for the Soviet Navy in the late 1920s.
Design
The MR-5 was similar to the MR-2 in layout, armament, and payload, but had a more powerful BMV VI engine and an all-metal hull. Flight tests were conducted in Taganrog beginning in July 1929, and although the aircraft behaved well in the air, takeoff was sluggish.[ 1]
Specifications
Data from [ 2]
General characteristics
Crew: 2
Length: 11.4 m (37 ft 5 in)
Wingspan: 15.6 m (51 ft 2 in)
Wing area: 53.0 m2 (570 sq ft)
Empty weight: 2,027 kg (4,469 lb)
Max takeoff weight: 3,082 kg (6,795 lb)
Powerplant: 2 × BMV VI V-cylinder inline engine, 372 kW (499 hp) each
Performance
Maximum speed: 235 km/h (146 mph, 127 kn)
Endurance: 4 hours
Service ceiling: 4,000 m (13,000 ft)
Time to altitude: 1,000 m (3,281 ft) in 7.0 minutes[ 4]
Wing loading: 58.2 kg/m2 (11.9 lb/sq ft)
Armament
References
^ Шавров, В. Б. История конструкций самолётов в СССР до 1938. - М .: Машиностроение, 1988. - ISBN 5-217-03112-3 . pp.403-404
^ Grigorovich MR-5
^ Gunston, Bill (1983). Aircraft of the Soviet Union : the encyclopaedia of Soviet aircraft since 1917 . Osprey. p. 92. ISBN 978-0850454451 .
Bibliography
Lawrence, Joseph (1945). The Observer's Book Of Airplanes . London and New York: Frederick Warne & Co.
Sources
Scout (R ) Shipboard scout (KR ) Cruiser scout (KR )
KR-1 1
KR-2 1
KR-3 1
KR-4 1
KR-5 1
KR-6
Shipboard catapult-scout (KOR ) Scout seaplane (MR ) Short-range scout seaplane (MBR ) Long-range scout seaplane (MDR ) Open-sea scout seaplane (ROM ) Descriptors
Long-range reconnaissance seaplane torpedo bomber MDRT
1 Unknown/not assigned