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.
airplanes and zeppelins were used during this war by putting bombs in this planes called zeppelins to attack other countries, from the germans.   Whilst this is correct, thâ¦e reason for use differs. Zeppelins were already in use by the German army at the outbreak of WW1.