| Revision as of 20:25, 9 December 2024 editNigel Ish (talk | contribs)Autopatrolled, Extended confirmed users, Pending changes reviewers77,062 edits →References← Previous edit | Revision as of 20:55, 9 December 2024 edit undoNigel Ish (talk | contribs)Autopatrolled, Extended confirmed users, Pending changes reviewers77,062 edits →Design and development: start sectionNext edit → | ||
| Line 25: | Line 25: | ||
| The '''Praga E-55''' was a prototype Czechoslovakian multi-purpose single-engine light aircraft designed by ] and intended for the ]. A single example was built, first flying in 1949, but the type was not selected for production, and the single example was used by an ] before being withdrawn from use in 1953. | The '''Praga E-55''' was a prototype Czechoslovakian multi-purpose single-engine light aircraft designed by ] and intended for the ]. A single example was built, first flying in 1949, but the type was not selected for production, and the single example was used by an ] before being withdrawn from use in 1953. | ||
| ==Design and development== | ==Design and development== | ||
| In November 1947, the Czechoslovak ] issued requirements for two light aircraft for service in support of the ], a smaller two-seat aircraft, to be powered by the {{convert|105|hp|kW|abbr=on}} ] engine and a larger three-seat aircraft to be powered by the {{convert|160|hp|kW}} ] engine.{{sfn|Marjánek|1976|p=867}}{{sfn|Marjánek|1980|p=712}} The larger aircraft was required to fulfil a number of roles, including observation and liaison duties, casualty evacuation and glider towing. It was required to give a good view in all directions for the observation role, and to operate out of short airstrip and to be easy to maintain in the field. It was also required to be transportable by towing behind a motor car or on the back of a 2.5 te truck.{{sfn||Marjánek|1976|pp=867–868}} | |||
| <!-- ==Design== may be combined with above as "Design and development" --> | <!-- ==Design== may be combined with above as "Design and development" --> | ||
| <!-- ==Operational history== --> | <!-- ==Operational history== --> | ||
Revision as of 20:55, 9 December 2024
| Praga E-55 | |
|---|---|
| Role | Military observation/liason aircraftType of aircraft |
| National origin | Czechoslovakia |
| Manufacturer | ČKD-Praga |
| First flight | 1949 |
| Number built | 1 |
The Praga E-55 was a prototype Czechoslovakian multi-purpose single-engine light aircraft designed by ČKD-Praga and intended for the Czechoslovak Army. A single example was built, first flying in 1949, but the type was not selected for production, and the single example was used by an aeroclub before being withdrawn from use in 1953.
Design and development
In November 1947, the Czechoslovak Ministry of Defence issued requirements for two light aircraft for service in support of the Czechoslovak Army, a smaller two-seat aircraft, to be powered by the 105 hp (78 kW) Walter Minor 4-III engine and a larger three-seat aircraft to be powered by the 160 horsepower (120 kW) Walter Minor 6-III engine. The larger aircraft was required to fulfil a number of roles, including observation and liaison duties, casualty evacuation and glider towing. It was required to give a good view in all directions for the observation role, and to operate out of short airstrip and to be easy to maintain in the field. It was also required to be transportable by towing behind a motor car or on the back of a 2.5 te truck.
Specifications
Data from Mongrafie: Praga E-55
General characteristics
- Crew: 3
- Length: 8.13 m (26 ft 8 in)
- Wingspan: 11.50 m (37 ft 9 in)
- Height: 2.28 m (7 ft 6 in)
- Wing area: 17.62 m (189.7 sq ft)
- Aspect ratio: 7.5:1
- Airfoil: NACA 23012
- Empty weight: 723 kg (1,594 lb)
- Gross weight: 1,040 kg (2,293 lb)
- Powerplant: 1 × Walter Minor 6-III 6-cylinder air-cooled in-line piston engine, 118 kW (158 hp)
- Propellers: 2-bladed Aero LC 70, 1.95 m (6 ft 5 in) diameter wooden fixed-pitch propeller
Performance
- Maximum speed: 167 km/h (104 mph, 90 kn) (TAS)
- Cruise speed: 150 km/h (93 mph, 81 kn) (EAS)
- Stall speed: 70 km/h (43 mph, 38 kn) (TAS)
- Range: 450 km (280 mi, 240 nmi)
- Service ceiling: 3,250 m (10,660 ft)
- Time to altitude: 8 min 30 s to 1,000 m (3,300 ft)
References
- Marjánek 1976, p. 867.
- Marjánek 1980, p. 712.
- & Marjánek 1976, pp. 867–868.
- Marjánek 1976, p. 868–869.
- Bridgman 1956, p. 121.
- Bridgman, Leonard (1956). Jane's All the World's Aircraft 1956. New York: The McGraw-Hill Book Company Inc.
- Marjánek, Pavel (1980). "Mongrafie: Aero Ae-50". Letectví + Kosmonautika (in Czech). Vol. 56, no. 18. pp. 712–714.
- Marjánek, Pavel (1976). "Mongrafie: Praga E-55". Letectvi a Kosmonautika (in Czech). Vol. 52, no. 22. pp. 867–870.
- Mau, Hans Joachim (1979). Tschechoslowakische Flugzeuge (in German). Belin: Transpress. ISBN 3-344-00121-3.
- "Praga E-55 (ČSR)". Flieger Revue (in German). No. 1. 1979. p. 40.
]