Dittmar_HD_153_Motor-Möwe

Dittmar HD 153 Motor-Möwe

Dittmar HD 153 Motor-Möwe

Type of aircraft


The Dittmar HD 153 Motor-Möwe was a West German light aircraft that was first flown in November 1953.

Quick Facts HD 153 Motor-Möwe, Role ...

Design and development

The Motor-Möwe, designed by Heini Dittmar who had designed the Dittmar HD 53 Möwe sailplane,[1] was a motorized development of this sailplane and was initially designed to be powered by engines of 48–63 kW (65–85 hp). The HD 153 prototype was a two-seat side-by-side high wing monoplane powered by a 48 kW (65 hp) Continental A65 engine and was of wooden construction with detachable wing and tail assemblies to facilitate road transportation when needed. A second prototype aircraft was fitted with a 45 kW (60 hp) Hirth engine.[2]

Operational history

The aircraft was designed for private and club use and served as a trainer and glider tug. Heini Dittmar, the aircraft’s designer, was killed in 1960 when his Motor-Möwe crashed near Essen/Mulheim airport. Small numbers of the type were completed by the end of 1960 and on 1 January 1961 four HD 153 and four HD 156 Motor–Möwen appeared in the West German civil aircraft register.[3] I 1965 four HD 153 and five HD 156 Motor-Möwen were registered in West Germany.[4] By 2007, no examples were known to be active.

Variants

HD 156 three-seat aircraft showing the revised front and side cabin glazing of this model.
HD 153
two-seat aircraft
HD 153A-1
production two-seaters
HD 156
three-seat aircraft fitted with additional side windows

Specifications (HD 153 with C90 engine)

Data from Jane's All the World's Aircraft 1958-59[5]

General characteristics

  • Crew: one
  • Capacity: one passenger (334 kg (736 lb) payload)[6]
  • Length: 6.5 m (21 ft 4 in)
  • Wingspan: 12 m (39 ft 4 in)
  • Height: 2.1 m (6 ft 11 in)
  • Wing area: 18.3 m2 (197 sq ft)
  • Aspect ratio: 8.5
  • Airfoil: Göttingen 367 modified
  • Empty weight: 465 kg (1,025 lb) equipped
  • Gross weight: 760 kg (1,676 lb)
  • Fuel capacity: 140 L (36.98 US gal; 30.80 imp gal) in two wing tanks + optional 200 L (52.83 US gal; 43.99 imp gal) overload tank[6]
  • Powerplant: 1 × Continental C90-12F 4-cylinder air-cooled horizontally-opposed piston engine, 67 kW (90 hp)
  • Propellers: 2-bladed Hoffman "HoCo" fixed pitch wooden propeller

Performance

  • Maximum speed: 170 km/h (110 mph, 92 kn)
  • Cruise speed: 150 km/h (93 mph, 81 kn)
  • Landing speed: 65 km/h (40 mph; 35 kn)
  • Range: 1,000 km (620 mi, 540 nmi)
  • Ferry range: 1,872 km (1,163 mi, 1,011 nmi) [6]
  • Endurance: 4.5 hours (13 hours with overload tank)[6]
  • Service ceiling: 4,500 m (14,800 ft)
  • Time to altitude: 1,000 m (3,300 ft) in 6 minutes
  • Take-off run: 150 m (492 ft)
  • Landing run: 130 m (427 ft)

References

  1. ZUERL, HUBERT (1954). Dittmar H. D. - 53 "Möwe" (in German). München: AFRO-Verlag Hubert Zuerl. p. 57.
  2. Green, William; Pollinger, Gerald (1955). The Aircraft of the World. London: Macdonald & Co. (Publishers) Ltd. p. 65.
  3. Gerhard, Peter. World Aviation Register - West Germany 1961 edition. Acton, London: Air-Britain.
  4. Green, William; Pollinger, Gerald (1965). The Aircraft of the World. London: Macdonald & Co. (Publishers) Ltd. p. 73.
  5. Bridgman, Leonard, ed. (1957). Jane's All the World's Aircraft 1958-59. London: Jane's All the World's Aircraft Publishing Co. Ltd. p. 175.
  6. "Dittmar HD 153 Motor-Möwe". Air Pictorial. July 1956.

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