IndiaMART Member Since: 2010
Dr. Kari Appa, a retired aerospace engineer, started Appa Technology Initiatives (ATI) in 1998 to develop new technologies in Aerospace and Wind Energy. In 2000, he was awarded a grant from the California Energy Commission to demonstrate proof-of-concept of a Contra Rotor Wind Turbine System (?CRWT?) using a pair of two-bladed 4 meter rotors and a pair of 3 kW permanent magnet alternators. The outcome of the study show that the leeward rotor of a CRWT could extract an additional 30-40% more power from a wind stream. Dr. Appa has been awarded 5 U.S. Patents for CRWT-related inventions.
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