Build a Pulse Rocket

[nhnifong]

Explosions can apply forces at short range in KSP

Build a rocket which propels itself entirely by controlled nearby explosions.

[SunJumper]

This can be simulated with a rocket engine with extremely high thrust that resets the trottle to zero when it reaches the max (and the trottle increases really fast), so that to use it, you spam the shift key. Remember to turn off sticky keys!

[Martonaut]

haha I love the idea. sounds hard to do