New Delhi: The Hindustan Aeronautics Limited (HAL) on Friday conducted the spin testing of its basic trainer aircraft HTT-40 with controls in the aerospace hub of Bengaluru, news agency ANI reported. The city-based defence behemoth released a statement.

The statement read, “The HTT 40 (Basic Trainer Aircraft) began the most awaited phase of the `spin test’ by successfully entering into a two-turn spin and subsequently recovering with the appropriate controls.  The aircraft was piloted by Gp Capt (Retd) KK Venugopal, and Gp Capt S Chaki (Retd).”

“HAL’s Aircraft Research and Design Centre (ARDC) had conducted extensive wind tunnel testing and mathematical model analyses to arrive at the spin characteristics of the aircraft. The entire study is put to test during those first few moments of spin testing,” the statement further read.

The aircraft was tested to take two turn spins and subsequently recovering through controls. A trainer aircraft is used to train the Indian Air Force pilots in flying at the Air Force Academy in Dundigal, about 35km from Hyderabad in Telangana.

The spin testing gives a boost to HAL and its ability in designing a spin-worthy aircraft, the defence firm’s Chairman and Managing Director (CMD) R. Madhavan said in the statement.

Spin testing is a critical aspect of flight testing of any aircraft development programme.

HAL’s Aircraft Research and Design Centre (ARDC) had conducted wind tunnel testing and mathematical model analyses to arrive at the spin characteristics of the aircraft, the statement said.

The project, which began in August 2013 with internal funding, reached spin testing in five years. The Defence Acquisition Council (DAC) has approved the procurement of 70 basic trainer aircraft from HAL in 2015. The production clearance for the HTT-40 is expected by this year-end, the statement added.

(With agency inputs)