The invention is a detachable hanger assembly for attaching a flying object to a launch rail on a launch platform. The detachable hanger assembly is attached to the flying object by one or more bolts and is adapted to slide in a slot in the launch rail when the flying object is launched. When the flying object is launched, the detachable hanger assembly slides in the slot until it impacts upon a stopper, which is fixedly located in the slot. The force of the impact of the hanger assembly with the stopper creates shearing forces that break one or more of the bolts thereby separating the main body section of the hanger assembly from the flying object.