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Information on icing flight tests as conducted by the US Army Aviation Engineering Flight Activity is presented. A quick review is conducted of organizations within the US Army that become involved with icing tests. Icing flight test techniques and hardware are shown and discussed. Natural and artificial icing test results are compared. Results and conclusions from previous icing evaluations are shown. The capabilities and limitations of current techniques and systems are discussed. And finally, the process for establishing an airworthiness qualification allowing Army aircraft to fly into a forecast icing environment is presented.

Powder metallurgy (P/M) technology has been identified as a major means for reducing critical element usage for superalloy turbine engine hardware. Utilizing quality and process control, a P/M process has been successfully developed and applied to producing hardware for General Electric's T700 engine used in the Army's Blackhawk helicopter. Utilizing the process, a cost saving of approximately $3000 per engine has been realized and a weight reduction of 40 lbs of superalloy starting material per engine has been achieved. Over 6000 parts have been produced to date and more than 800 engines have been delivered. The high time engine has achieved over 1900 hours operating time. A total of over 200,000 engine operating hours have been accumulated by as-HIP turbine hardware. This engine experience and mechanical property data show that the P/M process is capable of producing high quality reliable hardware for turbine engine applications.

A new generation of Army helicopter crew station is being developed today to meet the challenges of missions required by Army Aviation. The scout mission exemplifies the demands that can be placed upon the aircraft and crew. Scout missions require nap-of-the-earth (NOE) flight during day, night, and adverse weather conditions. Such a requirement demands the highest degree of compatibility between aircraft systems and crew. To meet this challenge, the US Army is currently developing an improved scout helicopter called the Army Helicopter Improvement Program (AHIP). Several enhancements and innovations in crew station design are an integral part of the program. Improvements in the AHIP control/display system reduce head-down cockpit activities allowing more time for head-up flight of the aircraft; especially important during NOE flight.