The European Space Agencys lander Schiaparelli crash landed on Mars after an unexplained saturation of its Inertial Measurement Unit sent bad data to the landers computer system forcing an early deployment of its parachute. The glitch that caused the bad data was only one second in duration. But that was enough to fool the landers system into thinking it had already landed, or was just about to land, when in fact it was still 3.7 km above the Martian surface. The resulting free-fall after the parachute was jettisoned was devastating to the lander.
Posted: Wed 23 Nov 2016