a hinge pin;

a first hinge-half having a first bracket configured to attach to the payload, the first hinge-half further having a rotatable arm rotatably coupled to the hinge pin, wherein the first bracket and the rotatable arm comprise respective shapes configured to lock together;

a second hinge-half having a second bracket configured to attach to a payload base, the second bracket coupled to the hinge pin, the second hinge-half having a hinge stop configured to stop rotation of the rotatable arm at a target angle; and

a spring coupled between the rotatable arm and the second bracket, the spring configured to apply a force to rotate the rotatable arm around the hinge pin whereby the first hinge-half and the second hinge-half can rotate with respect to each other when the rotatable arm and the first bracket are locked together;

wherein the first bracket is configured to release from the rotatable arm when the rotatable arm stops rotating at the target angle thereby deploying the payload into space.