Over a six-year period in the 1990s, this aircraft was slowly restored by Personal Plane Services in England using almost 90 % of its original aircraft skins.
12.
Smelter grade alumina is a critical input in the production of aluminum metal, used for such products as aluminum foil, beverage cans, building materials and aircraft skin.
13.
Zolt�n Dani tuned his P-18 to the lowest possible frequency, hoping that meter band waves would reflect from the inside of targets, rendering stealth aircraft skin technology ineffective.
14.
Some of this moist air is usually drawn into the pressurized aircraft cabin and into other non-pressurized areas of the aircraft and condenses on the cold aircraft skin.
15.
Blister-type bubble windows were replaced with flat ones, painted group markings were removed, and the aluminum aircraft skin polished to a high luster, all in order to achieve the least possible drag.
16.
The aviation agency originally ordered the changes in 1991 after discovering that the 727 aircraft skin could develop hidden cracks at the point of attachment, but the FAA says the airlines ignored the request.
17.
At the time, paint was expensive, weighed much, had relatively poor adherence to metal, and was prone to early bleaching, mechanical and chemical damage; leaving the aircraft skin largely unpainted was logical and economical.
18.
Metallurgist Terry Heaslip of the Canadian Company Accident Investigation and Research Inc . examined the aircraft skin from the tail and found signs of overheating, specifically that the skin had been flexed, through a phenomenon known as flutter.
19.
The B-2 lacks afterburners as the hot exhaust would increase the infrared footprint; breaking the sound barrier would produce an obvious sonic boom as well as aerodynamic heating of the aircraft skin which would also increase the infrared footprint.
20.
The F-117 lacks afterburners, because the hot exhaust would increase the infrared signature, and breaking the sound barrier would produce an obvious sonic boom, as well as surface heating of the aircraft skin which also increased the infrared footprint.
