page_title: Myasishchev M-55
section_title: Specifications (M-55)
hierarchical_section_title: Myasishchev M-55 / Specifications (M-55)
caption_attribution_description: English: Russian Myasishchev M-55 at MAKS-2005 airshow.
context_page_description: The Myasishchev M-55 is a high-altitude geophysical research aircraft developed by OKB Myasishchev in the Soviet Union, similar in mission to the Lockheed ER-2, but with a twin boom fuselage and tail surface design. It is a twin-engined development of the Myasishchev M-17 Stratosphera with a higher maximum take-off weight.
context_section_description: Data from The Osprey Encyclopedia of Russian Aircraft 1875–1995
  General characteristics
  Crew: 1 (M-55UTS: 2)
  Length: 22.867 m (75 ft 0 in) 
  M-17 22.27 m (73 ft 1 in)
  Wingspan: 37.46 m (122 ft 11 in) 
  M-17 40.32 m (132 ft 3 in)
  Height: 4.8 m (15 ft 9 in)
  Wing area: 131.6 m² (1,417 sq ft) 
  M-17 137.7 m² (1,482 sq ft)
  Aspect ratio: M-55:10.6
  M-17: 11.9
  Airfoil: M-17: P-173-9
  Empty weight: 13,995 kg (30,854 lb) 
  M-17 11,900 kg (26,200 lb)
  Gross weight: 23,400 kg (51,588 lb) 
  M-17 18,400 kg (40,600 lb)
  Max takeoff weight: 23,800 kg (52,470 lb) 
  M-17 19,950 kg (43,980 lb)
  Fuel capacity: T-8V aviation jet fuel 7,900 kg (17,400 lb) initially, 8,300 kg (18,300 lb) later
  Powerplant: 2 × Soloviev D-30-V12 low-bypass turbofan, 93.192 kN (20,950 lbf) thrust  each 
  M-17: 1 × 117.2 kN (26,300 lbf) Kolesov RD-36-51
  Performance
  Never exceed speed: 332 km/h (206 mph, 179 kn) at 5,000 m (16,000 ft) (M-17 and M-55)
  743 km/h (462 mph; 401 kn) at 20,000 m (66,000 ft) (M-17)
  750 km/h (470 mph; 400 kn) at 20,000 m (66,000 ft) (M-55)
  Range: 4,965 km (3,085 mi, 2,681 nmi)
  Endurance: 6.5 hours at 17,000 m (56,000 ft)
  M-17: 2.25 hours
  Service ceiling: 21,500 m (70,500 ft) 
  M-17: 21,500 m (70,500 ft)
  Maximum glide ratio: around 30:1 (engine off)
  Time to altitude: 21,000 m (69,000 ft) in 35 minutes
  Take-off distance: 900 m (3,000 ft)
  Landing distance: 780 m (2,560 ft)
caption: Myasishchev M-55 at MAKS 2005
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