You know those airbags in your car? Did you know they are very similar in nature to the airbags deployment system used to crash land the Mars rover on the surface of Mars? Did you know that one company is making external airbags for helicopters and rotorcraft? It’s all true. There are critical altitudes for helicopters incase of engine failure, altitudes that if the engine quits the helicopter will come crashing to the ground. Normally if the engine quits in a helicopter it can auto-rotate and t.