Aero A.300
| Aero A.300 | |
|---|---|
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| Type: | bomber |
| Design country: | |
| Manufacturer: | |
| First flight: |
1938 |
| Number of pieces: |
1 |
The Aero A.300 was a Czechoslovak twin-engine bomber aircraft from the second half of the 1930s. Only a prototype was built.
development
The A. the use of the Bristol “Mercury” engine (the licensed construction of which was prepared in the ČSR under the name Walter “Merkur” IX) was prescribed. Aero designer Antonin Husnik based his development on the A.204 passenger aircraft from 1936, the unrealized project A.206 and the A.304 bomber . Differences to the predecessor were stronger engines, a generously glazed fuselage nose and instead of the normal tail unit a reinforced double tail unit integrated in two end plates and attached to the upper edge of the fuselage. On the back of the fuselage behind the cabin and in the underside of the fuselage there was an extendable machine gun stand, and another in the bow.
A model of the A.300 was presented to the public at the Prague Air Show. The construction of the prototype was completed in 1938, so that flight tests could begin in Prague-Kbely in April 1938, which had to be interrupted due to problems with the Pantof retractable landing gear. In addition, problems arose with the Czechoslovakian fuel Bi-bo-li, which did not meet the British specifications for a fuel of 87 octane (which is why the rather unusual fuel from Veedol was used ). Nevertheless, the VTLÚ was able to take over the prototype for further tests on August 4, 1938. As early as September 1937, Greece had expressed interest in issuing a license and was negotiating the construction of 20 A.300s. However, the German occupation of 1939 put an end to all efforts in this regard. The prototype was confiscated and subjected to several tests at Focke-Wulf in Bremen. He did not survive the Second World War.
Technical specifications
| Parameter | Data |
|---|---|
| crew | 4 (pilot, navigator, bomb and gunner) |
| length | 13.50 m |
| span | 19.05 m |
| Wing area | 45.5 m² |
| Wing extension | 8.1 |
| Empty mass | 4337 kg |
| Takeoff mass | 6040 kg |
| Wing loading | 132.7 kg / m² |
| Power load | 3.6 kg / hp |
| Area performance | 37.8 hp / m² |
| Top speed | 376 km / h near the ground 456 km / h at 5960 m altitude |
| Marching speed | 430 km / h |
| Rise time | 1.96 min at 1000 m 5.35 min at 3000 m 9.1 min at 5000 m |
| Service ceiling | 9400 m |
| Range | normal 900 km maximum 1200 km with max. Bomb load 611 km |
| Engines | two air-cooled nine-cylinder radial engines Bristol Mercury IX with 830 HP (610 kW) each |
| Armament | a movable 7.92 mm machine gun vz.30 in the fuselage bow a movable 7.92 mm machine gun vz.30 in the back of the fuselage a movable 7.92 mm machine gun vz.30 in the underside of the fuselage |
| Drop ammunition | 1000 kg bombs |
See also
literature
- Hans-Joachim Mau: Czechoslovak aircraft . 1st edition. Transpress, Berlin 1987, ISBN 3-344-00121-3 , p. 174/175 .
- Werner von Langsdorff : Handbook of aviation . Born in 1939. 2nd, unchanged edition. J. F. Lehmann, Munich 1937, p. 221/222 .
