hesham said:Hi,
some info about the Model B and Model F;
This project has been designed to meet specifications by the United States
Air Force and the United States Navy. The end-product is to be a convertiplane
with two rotors and having an aircraft-helicopter configuration. The change-over
from one configuration to the other will be effected simply by swivelling the wing,
which has a four-bladed rotor at each tip. The blades, which are of small radius,
will rotate at high speed. The power plant planned for this project is two Boeing
502 turbines. A wing structure designed along the lines stated has already been
given prolonged tests on the test bed.
http://www.aviastar.org/helicopters_eng/convertawings_f.php
There are two versions of the Convertawings configuration. The small machine with intermeshed rotors (see Fig.1) is intended as a high-performance, compact military machine powered by four Continental Artouste II shaft turbines. This model permits economies in rotor design and should provide improved handling qualities.
The small high-speed rotors will extend the available speed range of the helicopter by reducing the high-speed vibration and control problems of conventional rotors. The thin blade sections possible will permit the higher forward flight tip speeds sought by the helicopter industry.
The large machine (Fig.2) is a commercial version intended to have moderate performance but excellent maintenance characteristics. The reduced blade size and gear reduction involved will permit economical mass production of the four identical rotor assemblies. In combination with the lifting booms and empennage, the basic stability advantage of the configuration should provide marked improvement over conventional helicopters and permit development of safe all-weather operating techniques.
hesham said:Hi,
here is a Model for Convertawings
From Krila 2/1957,what was Model designation for this beast ?.