Above: The SUHPA had to be assembled on site at

Sywell Aerodrome and from this angle you can see

the remote control set-up that operated the tailplane

control surfaces.

112  HUMAN POWERED AIRCRAFT

work on Formula One cars. Basically, it’s a big

fan that blows air through a tunnel so that you

can test how well your aerodynamic devices

are working. A wing relies on air flow over

its surface to generate lift, and that flow can

come from it being pushed through the air by

an engine, or by the air being pushed against

the wing. Sometimes a mixture of both does

the trick. When you’re flying a kite (which is

basically a wing) you might have to run a bit to