Aero A.204
| Aero A.204 | |
|---|---|
|
|
| Type: | Airliner |
| Design country: | |
| Manufacturer: | |
| First flight: |
1936 |
| Commissioning: |
- |
| Number of pieces: |
1 |
The Aero A.204 is a Czechoslovak airliner from the 1930s and the first modern design developed by Aero with cantilever wings and retractable landing gear . Only a prototype of her was built.
development
The A.204 was created in 1936 as a design by Eros chief designer Antonín Husník for the Czechoslovak airline ČSA . She received a comfortable, heated passenger cabin with individually adjustable seats, reading lamps and shelves for hand luggage . In the front and back there were two cargo holds; there was also a toilet. As drive two served with NACA hoods provided, native Walter Pollux - radial engines . The prototype was completed in 1936 and successfully completed flight tests. Nevertheless, ČSA decided against purchasing the A.204 and instead used British Airspeed Envoy on its Prague - Moscow route . However, the type served as the starting pattern for the two bombers A.304 (1937) and A.300 (1938).
construction
The A.204 worked as a cantilever low-wing aircraft in composite construction designed. The fuselage consisted of a welded tubular steel frame with an oval cross-section and fabric covering. The passenger cabin, with four seats arranged one behind the other on each side, was equipped with warm air heating and adjustable individual ventilation. The crew cabin was equipped with a double steering wheel. The trapezoidal wings with rounded ends and a strong V-position consisted of a plywood-covered wooden frame with two spars and ribs. They contained the fuel tanks with a total of 630 l capacity. The A.204 had a braced and braced normal tail unit with oars made of welded steel tubes with fabric covering and fins made of wood with plywood cladding . The gap ailerons also consisted of a wooden frame, but were covered with fabric. The elevator and rudder were fitted with trim tabs . The main wheels of the chassis were in two oil-air-suspension forks and were pulled hydraulically forward into the engine pods. The rear wheel was not designed to be retractable.
Technical specifications
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| Parameter | Data |
|---|---|
| crew | 2 |
| Passengers | 8th |
| length | 13.22 m |
| span | 19.20 m |
| height | 3.40 m |
| Wing area | 46.0 m² |
| Cabin dimensions (l × w × h) | 4.05 m × 1.3 m × 1.65 m |
| Wing extension | 7.8 |
| Wing loading | 93.5 kg / m² |
| Power load | 5.9 kg / hp |
| Area performance | 15.6 hp / m² |
| Preparation mass | 2850 kg |
| Payload (passengers) | 800 kg |
| Takeoff mass | 4300 kg |
| drive | two air-cooled nine-cylinder - radial engines |
| Type | Walter Pollux II R. |
| rated capacity | 360 hp (265 kW) |
| Fuel supply | 630 l |
| Top speed | 320 km / h at an altitude of 1400 m |
| Cruising speed | 286 km / h at an altitude of 1400 m |
| Rise time | 3 min at 1000 m altitude 12 min at 3000 m altitude 30 min at 5000 m altitude |
| Service ceiling | 5800 m 1700 m in single-engine flight |
| Range | 900 km |
literature
- Peter Alles-Fernandez: Aircraft from A to Z. Volume I: Aamsa Quail – Consolidated P2Y. Bernard & Graefe, Koblenz 1987, ISBN 3-7637-5904-2 , pp. 22/23
- Werner von Langsdorff : Handbook of aviation. Year 1939. , 2nd, unchanged edition, J. F. Lehmann, Munich 1937, p. 459.
- Václav Němeček: Československá letadla. Naše Vojsko, Prague 1968, pp. 74/75 and 284/285 (Czech).
