Soft Landing

My husband had a great idea last night. I am amazed that no one ever thought of it. His favorite show is "Air Disasters". It is about plane crashes. He said he came up with a solution for hard landings. If a space capsule lands with a parachute attached to it, why doesn't a plane have a parachute? If every plane was built with four parachutes, one in front, one in back, and one on each wing, in case of a disaster, it would have a soft landing. The momentum would be less and the plane could glide. It seems like such a simple concept. How come an engineer never thought about it?