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.
Development of the improved helicopter icing spray system (IHISS)
AHS Annual Forum ; 1989 ; Boston, MA, United States
1989-01-01
Conference paper
No indication
English
Helicopter Icing Spray System Qualification
NTIS | 1973
|Modified Helicopter Icing Spray System Evaluation
NTIS | 1977
|Online Contents | 2010
|