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HAL's modified IJT commences spin flight testing

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HALs modified IJT commences spin flight testing
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The indigenous Intermediate Jet Trainer (IJT) designed and developed by HAL to replace the ageing Kiran aircraft fleet of the IAF 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 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 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.

For the 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 an extensive redesign of the rear fuselage and the rudder. The changes have been incorporated into 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. 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 and right-hand sides to test the spin characteristics.

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TAGS:HAL Indian Defence IJT Flight Indian Air Force 
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