Wind-driven turbine vent. 1  Wind-driven roof vents will pull more air from the attic, but only when the wind is blowing. 2  Flat roof vents have no moving parts to break or squeak, but don't vent as much air as wind-driven vents.
An airplane or aeroplane (informally plane) is a powered, fixed-wing aircraft that is propelled forward by thrust from a jet engine or propeller. Airplanes come in a variety of sizes, shapes, and wing configurations. The broad spectrum of uses for airplanes includes recreation, transportation of goods and people, military, and research. Commercial aviation is a massive industry involving the flying of tens of thousands of passengers daily on airliners.
The automotive and aircraft industry may benefit from this technology as it could be used to design and manufacture components for use in automobile radiators and space radiators, aluminum engine blocks and pistons, heat exchangers for gas-turbine applications, all-metal honeycomb sandwich panels for fabrication of aircraft structures, jet engines in commercial and military aircrafts, thrust chambers in rocket engines; and for other electronic components, probes and thermionic devices, space ...