The idea behind drop away boosters is to increase the launch velocity of the main stage to achieve a greater altitude. When the stored energy in the boosters is spent, they automatically separate from the main stage and take away their dead weight and drag.
This mechanism was developed to provide automatic staging of multi-stage water rockets. This mechanism will release a sustainer with a standard 9mm Gardena nozzle when the booster stops producing thrust.
This mechanism was developed to provide automatic staging of muli-stage water rockets. This mechanism will release a sustainer with a standard 9mm Gardena nozzle when the pressure inside the booster drops to near atmospheric pressure at burnout.
The DetMech mechanism was developed to automatically detach a rocket from its parachute line. It is designed to assist in recovering rockets snagged by their parachute in trees.
Details of the parachute deployment mechanism used by the Dark Shadow rocket. This mechanism is based on rubber bands ejecting the nosecone and parachute axially.