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This design is based on
hang-gliders. Most of the structural components can be made of aviation
grade aluminium alloy, and the wing membrane is made in a similar way to
that of a hang-glider. (The wing would be double-skinned at the front to
enclose the spars, but I haven't shown that yet in the pictures.) The aim has been to produce a simple but effective
structure that can be built within the short time available. A few specialised parts may be
required, for example castings for the wing joints.
The Transition flapper
is
human powered - the lever operating the wing movements is moved by leg
power. Only the downstroke is powered, the upstroke is achieved by normal
lifting forces experienced by the wings in flight. During the upstroke,
energy is stored to be re-used during the downstroke. (I have worked out
the principles involved in the wing beat cycle by making models over the
years.)
For further details, click on the links
below. The pictures aim only to give an idea of the general concept - they
are not intended to give an accurate representation of shapes,
proportions or engineering at this stage! |
Transition Flapper