A fourth illustration shows, viewed from the front and above, the Voisin hydro-aeroplane known as the “Canard” (duck) , skimming the surface of the water before soaring in flight. This biplane ...

Illustration of X-37B conducting an aerobraking maneuver using the drag of Earth’s atmosphere. Credit: Boeing Space The US Space Force is usually pretty mum about X-37B, its semi-secret space plane, ...