powered flight
121Aeroplane Monthly — Aeroplane Aeroplane Monthly Pays  Royaume Uni Langue Anglais Périodicité Mensuel …
122Mitsubishi J8M — Role Interceptor Manufacturer Mitsubishi First flight …
123List of United States inventions — 1700s1731 Sextant * The sextant is an astronomical instrument that is used to determine latitude for navigation. It does this by measuring angular distances, like the altitude of the sun, moon and stars. The sextant was invented independently in… …
124Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …
125Wright, Wilbur and Orville — ▪ American aviators Introduction also called Wright brothers Respectively, born April 16, 1867, near Millville, Indiana, U.S. died May 30, 1912, Dayton, Ohio born August 19, 1871, Dayton died January 30, 1948, Dayton American (United… …
126Sound barrier — In aerodynamics, the sound barrier usually refers to the point at which an aircraft moves from transonic to supersonic speed. The term came into use during World War II when a number of aircraft started to encounter the effects of compressibility …
127Martin Marietta X-24A — This article is about the experimental aircraft. For the aeroplane engine, see X24 engine. X 24A The Martin X 24A Role …
128Solar energy — is the light and radiant heat from the Sun that powers Earth s climate and weather and sustains life. Since ancient times it has been harnessed for human use through a range of technologies. Solar radiation along with secondary solar resources… …
