How Spacecraft Fly : Spaceflight Without Formulae, Paperback by Swinerd, Graham; Webb, Stephen (FRW), ISBN 1441926291, ISBN-13 9781441926296, Brand New, Free shipping in the US Sputnik was launched almost fifty years ago, and most people still don’t understand how. Written for the layman, this text explains aerodynamic and astrodynamic spaceflight using informal language free of mathematics and technical jargon.