Abstract: Conventionally, high-speed cameras are used to record the ejection of a store from an aircraft. The subsequent processing and analysis of the high-speed films are usually quite costly. The present invention system substantially reduces the cost of such processing and analysis by implementing a plurality of electro-optic sensors to detect sequentially individually energized LEDs mounted onto the to be ejected store. To sequentially activate the LEDs, receiver decoder electronics, located on the store, are used--provided signals are sent thereto by a radio control transmitter located in the aircraft. By formatting the data received by the electro-optic sensors, the different positional characteristics, such as the pitch rate, the velocity, the yaw rate and the roll rate, can be calculated in real time, either on board of the aircraft or at a remote location, the raw data having been transmitted thereto by means of a telemetry system, also located within the aircraft.

Abstract: An electro-optical spin measurement system for a spin model in a spin tunnel includes a radio controlled receiver/transmitter, targets located on the spin model, optical receivers mounted around the perimeter of the spin tunnel and the base of the spin tunnel for receiving data from the targets, and a control system for accumulating data from the radio controlled receiver and receivers. Six targets are employed. The spin model includes a fuselage, wings, nose and tail. Two targets are located under the fuselage of the spin model at the nose tip and tail, two targets are located on the side of the fuselage at the nose tip and tail, and a target is located under each wing tip. The targets under the fuselage at the nose tip and tail measure spin rate of the spin model, targets on the side of the fuselage at the nose tip and tail measure angle of attack of the spin model, and the targets under the wing tips measure roll angle of the spin model. Optical receivers are mounted at 90.degree.

Abstract: A flight deflection measurement system including a hybrid microchip of a receiver/decoder. The hybrid microchip decoder is mounted piggyback on the miniaturized receiver and forms an integral unit therewith. The flight deflection measurement system employing the miniaturized receiver/decoder can be used in a wind tunnel. In particular, the miniaturized receiver/decoder can be employed in a spin measurement system due to its small size and can retain already established control surface actuation functions.

Abstract: The output of a diode array undergoes A/D conversion. A constant digital value is added to the output when remote light sources remain de-energized to establish an ambient threshold level. The remote sources are then energized; and when a digital array output signal is sensed at a level exceeding the threshold, the positive existence of a sensed source is established. The invention has application in the measurement of aircraft wing vibration.