|
Flettner Fl-282 'Kolibri' WWII Helicopter
The pioneer work of Anton Flettner is often overshadowed by the more publicised activities of his contemporaries Focke and Sikorsky; yet Flettner's first fully practical helicopter, the Fl 265, was far superior to the Fw 61 and made a successful free flight several months before the VS-300 began tethered flights. Look and compare the Flettner 282 to Igor Sikorsky's R-4 One of the major forces of the evolution of autogyros into modern helicopters was Germany's Anton Flettner, whose first rotary wing aircraft flew in 1932. Through various stages, Flettner developed a machine which, in 1939, caught the interest of the German Navy, who planned to use it for antisubmarine patrol. Accordingly, 30 prototypes of the new two-seat Fl 282 Kolibri were ordered immediately, plus 15 assessment craft.
The RLM therefore agreed to wait for the Fl 282, to hasten whose development it ordered thirty prototypes and fifteen pre-production aircraft in spring 1940.The maiden flight was made in 1941. The first three prototypes were completed as single-seaters and had fully enclosed cabins made up of a series of optically flat Plexiglas panels, faired-in rotor pylons and well-contoured fuselages. The Fl 282V3 was fitted with end plate auxiliary fins and a long under-fin beneath the rear fuselage. Later machines had more utilitarian bodies and some had semi-enclosed cockpits; others had a completely open pilot's seat.
Flettner demonstrated that the little craft could land on a ship, even in heavy seas. The German Navy (Kriegsmarine) was impressed with the Kolibri and wanted to evaluate its use for submarine spotting. Naval leaders ordered several dozen of the craft with the clear intention of mass-producing them. The first Fl 282 flew towards the end of 1941. The Fl-282 was more highly developed and flew more hours than any other German helicopter, and very extensive tests and measurements were made of all flight aspects. Most of this test work was done by Flettner's chief pilot, Hans E. Fuisting, who also undertook blind flying and trained many of the 50 pilots who learned to fly the Fl-282. The Fl 282 served in the Baltic, North Aegean, and Mediterranean
Seas. Plans to build thousands of Kolibris were abandoned after
the Flettner factories were bombed by the Allies. Only three of
these helicopters survived the war; the rest were destroyed to
prevent capture. Two of the survivors went to the United States
and Britain, the third to the Soviet Union The Fl 282 was designed so the rotor blades and landing gear could be removed and the helicopter stored in a compact area such as the pressure tank of a U-boat. There is no evidence that it was ever used this way. The helicopter pilot could match the speed and course of the submarine and radio the position to the convoy. He could also mark the sub's position with a smoke bomb. But the helicopter was too small to carry weapons, although some tests were conducted with small anti-submarine bombs. There is no accurate information on the helicopter's actual use during the war. However, critics argued that fighter planes would easily attack the slow-flying craft. In 1941, the Navy conducted an evaluation using two fighter planes to stage a mock attack on a Fl 282. The fighters could not hold the agile helicopter in their gunsights for very long.
The Fl-282B had a maximum speed of 93 mph at sea
level. The Fl-282B was used for such military tasks as directing
artillery fire and guiding tanks over rough terrain. Beginning
in 1944, the army began to implement a program to provide a helicopter
to each independent artillery brigade. However, as the Allies
advanced into Normandy in 1944, the Fl 282s were destroyed to
prevent capture, but three were taken home as war booty by Russia
and the United States.
![]()
The Flettner series were the first helicopters (1938) to use
a system of two separate rotors counterrotating into each other.
Year of design being 1938. However, there was a great difference
in engine placement. The Fl 282 had a central mounted engine,
a Bramo Sh 14A, with the cockpit in front of it. There were
three types of cockpits: an open one, a half open one and a
fully closed one (mixed usage and designated B-1 version). The
observer was sitting behind the rotor, facing aft. Not every
Kolibri was built as a dual seater.
|