Whenever the Global Hawk begins a mission, it has to travel through a certain area of the atmosphere that, under certain conditions, can create ice on the aircraft, adding weight and aerodynamic drag.
A cloud deck from about 8,000 feet to 22,000 feet is the main concern for the Global Hawk, according to project engineer Jonny Kim, Global Vigilance Combined Test Force.
According to Maj. Ryan Finlayson, test pilot with the Global Vigilance CTF, the ice only forms for about five minutes on the way up, and again on the way down through this cloud deck.
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Whenever the Global Hawk begins a mission, it has to travel through a certain area of the atmosphere that, under certain conditions, can create ice on the aircraft, adding weight and aerodynamic drag.
A cloud deck from about 8,000 feet to 22,000 feet is the main concern for the Global Hawk, according to project engineer Jonny Kim, Global Vigilance Combined Test Force.
According to Maj. Ryan Finlayson, test pilot with the Global Vigilance CTF, the ice only forms for about five minutes on the way up, and again on the way down through this cloud deck.
To assure that these variables will not negatively impact the Global Hawk’s role, members of the Global Vigilance Combined Test Force here are testing the aircraft in a unique way.
Rather than wait for the right weather conditions, the formation of the cloud deck, technology was used to design 3-D printed nylon attachments to mimic the ice that would form on the aircraft during ascent and descent.
“This was a first-of-type testing done here at Edwards. No other program or CTF has accomplished icing testing in this manner,” said Lt. Col. Cory Naddy, director of the Global Vigilance CTF. He said the combination of the testing techniques and the fact that this is an autonomous unmanned air vehicle made the testing high risk by wing standards, and required significant effort behind the scenes in the CTF.
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