The problem is that gravity is too high for a human to realistically be able to power an aircraft. I read a science-fiction book by Arthur Clarke, which makes a reference to 'sky cycling' as an event in the Lunar olympics. Presumably there, the 1/6th gravity combined with enclosed structures at terrestrial air pressure would make human-powered flight relatively easy. The best aerodynamicists in the solar system are apparently on Mars 'If you can fly in that atmosphere, you can fly anywhere'