NEW DELHI: Defence experts believe that the effect of negative gravitational force may have caused the crash involving India's Tejas fighter aircraft during the Dubai Airshow. G-force is the unit used to measure acceleration related to gravity.

Squadron Leader Namansh Syal took the aircraft sharply upward at high speed and then performed two rolls while diving downward. During the third attempt, the aircraft lost control, crashed to the ground, and burst into flames, leading to Syal’s death.

During aerobatic manoeuvres, fighter pilots experience strong positive and negative G-forces. When the aircraft climbs sharply, positive G-force pushes the pilot firmly into the seat, causing blood to flow away from the brain toward the legs. When the aircraft dives downward, the pilot experiences ne

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