Describes various products and explains how they were developed.Propelled skyward UPSIDE-DOWN WINGS Racing cars use wings on the front and. Wea#39;ll use a ... An airplane is a heavier-than-air aircraft that has wings and is powered by an engine. ... A propeller has two or more blades attached to a shaft.
|Author||:||Gerry Bailey, Jan Smith, Andrew Keylock|
|Publisher||:||Capstone - 2005-01-01|