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Development of the improved helicopter icing spray system (IHISS)Boeing Helicopters has been awarded a contract by the U.S. Army to design, fabricate and test a replacement for the existing Helicopter Icing Spray System (HISS). The Improved Hiss (IHISS), capable of deployment from any CH-47D helicopter, will include new icing spray nozzles and pneumatic pressure source, and a significantly larger water tank and spray boom. Results are presented for extensive bench and icing tunnel test programs used to select and modify an improved spray nozzle and validate spray boom aerodynamic characteristics. The resulting system will provide a significantly larger icing cloud with droplet characteristics closely matching natural icing conditions.
Document ID
19900041127
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Peterson, Andrew A.
(Boeing Helicopter Co. Philadelphia, PA, United States)
Jenks, Mark D.
(Boeing Helicopters Philadelphia, PA, United States)
Gaitskill, William H.
(U.S. Army, Aviation Systems Command, Saint Louis MO, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Air Transportation And Safety
Meeting Information
Meeting: AHS Annual Forum
Location: Boston, MA
Country: United States
Start Date: May 22, 1989
End Date: May 24, 1989
Accession Number
90A28182
Distribution Limits
Public
Copyright
Other

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