Another problem is that the air eventually runs out, so the amount of additional thrust is limited by how fast the rocket climbs.
This additional thrust augments the velocity and consequently, the range of the projecxtile.
It is a system for helping overloaded aircraft into the air by providing additional thrust in the form of small rockets.
This added 500 kg (1,100 lb) in weight, but gave additional thrust to the engines.
Despite the additional thrust, the team still found the plane to be too heavy to travel the 1 km (0.62 mi) the contest demanded.
The second configuration added a pair of jet engines for additional thrust.
It was cheaper to land in the Moon's shallower gravity well than to use the additional thrust to go to Earth.
For additional thrust, fuel could be sprayed between the turbine stages.
It had six exhaust ejectors, one for each pair of cylinders, that provided some additional thrust.
A 10 to 30% additional thrust can thus be gained.