No abstract

The use of airborne laser radar (lidar) to measure wind velocities and to detect turbulence in front of an aircraft in real time can significantly increase fuel efficiency, flight safety, and terminal area capacity. We describe the flight-test results for two coherent lidar airborne shear sensor (CLASS) systems and discuss their agreement with our theoretical simulations. The 10.6-μm CO(2) system (CLASS-10) is a flying brassboard; the 2.02-μm Tm:YAG solid-state system (CLASS-2) is configured in a rugged, light-weight, high-performance package. Both lidars have shown a wind measurement accuracy of better than 1 m/s.

This technical information memorandum (AFFTC-TIM-93-01) was developed as a non-funded research and development effort at the Air Force Flight Test Center (AFFTC),

Five goldfish were trained to strike a key illuminated with 550 IllIl to obtain food on a VI 30 min . schedule . After 30 days of single-stimulus training the Ss were divided into two groups: one group remained on singlestimulus training while the other group was given discrimination training. The discrimination training consisted of S+ (550 ffi/1) trials randomly alternated with S-(590 mfL) trials which were not reinforced. After 15 days of training the Ss were tested for generalization in extinction using 9 different wavelengths. The Ss were then retrained so that each S who previously had single-stimulus training now received discrimination training and vice versa. After 17 days of retraining the Ss were retested for generalization. Behavioral contrast and peak-shifts were found with the goldfish. In addition, the effects of both discrimination training and the obtained stimulus generalization gradients appeared to be reversible with the goldfish.

Fixed-interval responding which produced time out from shock avoidance schedules was established in a chimpanzee. Two widely differing discriminated avoidance schedules were employed in a multiple schedule arrangement. Differences in fixed interval rate were found to be related both to the schedule from which the subject was escaping and to the amount of training.