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Deicing boot
A deicing boot is a type of ice protection system installed on aircraft surfaces to permit a mechanical deicing in flight. Such boots are generally installed on the leading edges of wings and control surfaces (e.g. horizontal and vertical stabilizer) as these areas are most likely to accumulate ice and any contamination could severely affect the aircraft's performance.
Deicing boots were invented by the B.F. Goodrich Corporation in 1923 in Akron, Ohio. In its quest to develop deicing boots, the company built a large indoor facility in Akron to replicate bad weather and icing on aircraft wings.〔("Artificial Blizzards Help To Protect Planes", February 1931, Popular Mechanics ) illustration of blizzard machine and how de-icing boots work〕〔("Overshoes For Planes End Ice Danger", November 1931, Popular Science ) bottom of page 28〕
== Design ==
A deicing boot consists of a thick rubber membrane that is installed over the surface to be deiced. As atmospheric icing occurs and ice builds up, a pneumatic system inflates the boot with compressed air. This expansion in size cracks any ice that has accumulated, and this ice is blown away into the airflow. The boots are then deflated to return the wing or surface to its optimal shape.
Boots need to be replaced frequently (on the order of 2–3 years), and require proper care. Holes in the boot may create air leaks that will decrease the effectiveness of the boots. As such, boots must be carefully inspected before each flight and any holes or cuts must be patched.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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