The Heinkel HD 28 was a reconnaissance seaplane developed in Germany in the 1920s for export to Japan. It was a conventional single-bay biplane with equal-span, unstaggered wings and three cockpits in tandem. The fuselage was braced to both the upper and lower wings with a number of struts on its sides, in addition to the normal cabane struts. The rudder extended below the line of the lower fuselage, and there was a large ventral fin fitted. The rearmost cockpit incorporated a ring mount for a gunner.
| HD 28 | |
|---|---|
| |
| Role | Reconnaissance seaplane |
| National origin | Germany |
| Manufacturer | Heinkel |
| First flight | 1926 |
| Number built | 1 |
A single example built by Heinkel and supplied to Aichi as a pattern aircraft, given the designation Aichi Experimental Three-seat Reconnaissance Seaplane, for possible production in Japan, but was rejected due to problems with the engine and also failure to meet performance and weight reduction targets.
Specifications edit
General characteristics
- Crew: Three
- Length: 11.00 m (36 ft 1 in)
- Wingspan: 15.00 m (49 ft 3 in)
- Height: 4.52 m (14 ft 10 in)
- Wing area: 59.5 m2 (640 sq ft)
- Empty weight: 2,365 kg (5,215 lb)
- Gross weight: 3,850 kg (8,490 lb)
- Powerplant: 1 × Lorraine Dietrich 18K , 485 kW (650 hp)
Performance
- Maximum speed: 198 km/h (124 mph, 108 kn)
- Range: 1,250 km (780 mi, 680 nmi)
- Service ceiling: 4,500 m (14,800 ft)
References edit
Further reading edit
- Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. p. 498.