Bücker Bü 181
| Bü 181 Bestmann | |
|---|---|
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|
| D-EKYF, a Swedish-built Sk 25 (Bücker Bü 181 B-1) | |
| Role | trainer |
| Manufacturer | Bücker |
| First flight | February 1939 |
| Primary users |
Luftwaffe Czechoslovakia Egypt Sweden Switzerland |
| Number built | 3,400 |
The Bücker Bü 181 Bestmann was a two-seater, single-engine aerobatic monoplane aircraft built by Bücker Flugzeugbau GmbH in Rangsdorf, near Berlin and extensively used by the Luftwaffe in World War II.
The Bücker Bü 181 was named Bestmann after a German maritime term designating a member of the deck crew on coastal or fishing vessels. The prototype Bü 181 (D-ERBV) made its maiden flight in February 1939 with Chief Pilot Arthur Benitz at the controls. After thorough works and official flight testing by the Reichsluftfahrtministerium (RLM) the Bü 181 was nominated to be the standard primary trainer for the Luftwaffe. Series production of the Bü 181 commenced in 1940. The production types were designated B to C with only slight variations between each, and could be powered by the Hirth HM 500 A or B.
The Bü 181 aircraft was a single-engine low-wing monoplane with fixed undercarriage, split flap, twin controls and two adjustable seats arranged side-by-side. The cabin section of the fuselage was of a tubular steel frame construction whereas the rear of the fuselage had a wooden shell. The wing assembly and tail unit were also of wooden shell construction. All the rudders, elevators and ailerons had wooden ribs and are covered in fabric. The flaps were metallic on the B types and wood on the C types. The Bü 181 Bestmann was powered by a 105 hp four-cylinder Hirth HM 500A or B piston engine. The aircraft was designed for training flights, pleasure trips and aerobatics. Its strength corresponded to Stress Group 5 with a limited load (single occupancy) and Stress Group 4 fully laden
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