Pusher aircraft

heavy bomber aircraft model

experimental high-speed compound helicopter with coaxial rotors

arrangement of propellers on an aircraft to face rearward

heavy bomber biplane model

reconnaissance aircraft prototype model

Musculair 1 and Musculair 2 are two human-powered aircraft designed and built by German academic and engineer Günther Rochelt.

Japanese airplane

Two-bladed compound autogyro

Proposed German heavy fighter

1910s Swiss reconnaissance aircraft