Avro 547
The Avro 547 was a continuous tape as a three -decker single-engined airliner of the British manufacturer AVRoe & Company from the 1920s. It had an enclosed passenger cabin for four people and an open pilot cockpit. Due to its poor flight performance of only one of the two built specimens found a buyer.
History
Although a fundamental new development, were many components of the successful model used in the Avro Avro 547 504, so the wings and the connecting struts, the landing gear and tail. The maiden flight of the first 547 took place in February 1920. Test flights in the spring of 1920 gave similar flight characteristics as that of the Avro 504K.
On the basis of a tender of the British Air Ministry for a light commercial aircraft in June 1920, the construction of a second machine, equipped with a 240 hp Siddeley Puma engine. Due to the requirements of the tender, the second machine, as Avro 547a differed referred to by more legroom for passengers, padded seats, interior lighting, and a passage between the cockpit and passenger cabin.
However, a contract is not made because the plane was too unstable and too slow. To make matters worse, a suspension strut was damaged in a hard landing during the competition; about 15 minutes later, broke the complete suspension of the guest machine. The 547a completed after repair some test flights and was dismantled in August 1921.
Despite the poor performance of the sister machine, the Australian airline QANTAS acquired in November 1920, the erstgebaute 547 for a purchase price of about 2,800 pounds. QANTAS proposed a liner service between the cities of Melbourne and Darwin, and the Avro 547 was to take over the section between Charleville and Katherine.
In the first tests in Australia, showed that this machine also had a weak chassis; it was strengthened and equipped with rubber shock absorbers.
Although the 547a was awarded second place at the Australian Aerial Derby in 1922, but it turned out that the machine was the harsh conditions in Australia not grown. So the Australian Aviation Authority failed airplane admission as line machine. In the executive suite at QANTAS was so disappointed, so since no transactions between the airline and the company Avro more have been recorded.
The hull of the 547a later found an inglorious end as henhouse in Sydney.
After the bad experience with the first two machines already begun at Avro 547 third was never completed.
Construction
The Avro 547 was a zweistieliger, tense triplane wings with the same depth. The wing consisted of a wooden structure covered with fabric. The fuselage was a wooden structure, cladding at the front with plywood, covered with fabric at the rear. The chassis consisted of a rigid two-wheel main landing gear and a rigid tail skid. A copy was given a suspension chassis later.
Was driven the 547 from a water-cooled 160 hp Beardmore engine. She had an aileron, the mean areas were provided on each wing with an additional buoyancy aid.
Which is placed behind the wings cockpit pilot was not as usual centrally, but on the left side of the fuselage, oddly enough, on the same side as the housed the view obstructing exhaust pipe. The passenger cabin in front of it could accommodate 4 passengers, 2 people were sitting on unpadded benches opposite. In developed benches standing space for light cargo or mail.
Specifications
( a Siddeley Puma engine with an output of 179 kW ( 243 hp) )