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Aero India 2023

Intermediate Jet Trainer commences spin flight testing

The Intermediate Jet Trainer. Photo: HAL

BENGALURU (PTI): The indigenous Intermediate Jet Trainer (IJT), designed and developed by Hindustan Aeronautics Ltd to replace the ageing Kiran aircraft fleet of the Indian Air Force, has commenced spin flight testing in Bengaluru.

The flight was piloted by HAL’s test pilots Gp. Capt H.V. Thakur (Retd) and Wg. Cdr P. Avasti (Retd), the Bengaluru-headquartered HAL said in a statement on Monday.

"The spin testing of an aircraft is the most crucial phase of its flight testing. Accordingly, the testing will be gradually progressed to assess the behaviour of the aircraft till six turn spins to either side to meet the targeted requirement", the PSU Defence major said.

The IJT has already been tested to its full envelope in terms of speed, altitude and load factor (g envelope) and has also been integrated with drop tanks as well as bombs, according to HAL.

For spin test, HAL redesigned the aircraft by moving the vertical tail aft and extending the rudder surface.

These changes for ensuring a satisfactory spin behaviour required extensive redesign of the rear fuselage and the rudder, the company said.

The changes have been incorporated in two aircraft with the involvement and clearance from certification agencies at every stage.

Post modification, the two aircraft underwent significant flight tests to assess the general handling with the new configuration of fin and rudder, it was stated.

These aircraft have now been incorporated with the necessary safety devices (Anti-Spin Parachute Systems).

During the first flight, initially the aircraft was taken through one turn spin to the left hand and right hand sides to test the spin characteristics, the statement added.


IJT  HAL  IAF  Flight Test  

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