Abstract: An airfoil comprising an elongated member terminating at a nose portion having a tapered circular cross section defining a plurality of flight control surfaces which function to stabilize the flight of the elongated member during launch and when the same exceeds a predetermined velocity. The airfoil further comprises a dual second control surface which functions to rotate or spin the elongated member about an axis that traverses the longitudinal axis of the member to provide a slow descent of the member after its velocity drops below a predetermined speed. The trailing edge of the elongated member is curved to provide additional stability by rotating the elongated member about its longitudinal axis throughout its entire flight.A launcher is disclosed for propelling the airfoil into flight with the launcher comprising an elongated member having a curved handle at one end.

Abstract: The invention concerns dynamic ballast and stabilization systems for deep-sea applications such as the dynamic anchoring and stabilizing of off-shore platform structures supported by an elongated structure of the type having the lower ends fastened into the floor of a body of water. The system employs a relatively large impellor assembly which generates a downward vertical thrust of sufficient magnitude as to maintain the platform anchored. The structure is designed to absorb shock and movement within a prescribed range to cushion and protect operating equipment. The impellor is enclosed in a movable slinger which can control the lateral direction of the impellor generated thrust such that lateral displacement of the structure is counteracted by the underwater reactive force generated by the impellor. This system includes means for converting the flow of seawater into usable power for driving the system.