This is a Delmag jumping jack. It was an old school method of compaction . How it works is that when the throttle is engaged, the diesel engine fires and unleashes a violent mechanical or explosive force that compresses and then releases the springs, launching the entire 60 to 100-kg machine into the air.

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Simulated engine failure during training. Practicing scenarios like this builds the habits and decision-making skills needed to respond methodically under pressure. In aviation, preparation matters long before an emergency ever happens. The student in this case reacted well given he is a newer student. #aviation #flighttraining #emergencyprocedures #studentpilot #cfi

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