The resulting similarity parameters, which govern the flow are given. Results are compared with numerical simulations using the Euler equations and demonstrate the application of the TSD theory in validating the results of computational aerodynamics. Mach number is increased. The use of the theory in the design of lower drag airfoils with higher critical Mach number is also presented. The extension of the theory to the study of transonic flows of moist air around airfoils is also discussed.
Most modern spacecraft require some form of active control to accomplish their mission objectives.
Accurate system identification is often a precursor to sophisticated control algorithms, which assume that the spacecraft dynamics have been accurately modelled. The usual assumption of system linearity, however, may not always be valid. Using a technique called Augmented System Identification , this paper presents an approach that better models the nonlinearities inherent in control moment gyroscopes. Exhibiting the salient characteristics of flexible spacecraft, DICE encompasses a series of experiments that are being designed and developed for the middeck of the NASA Space Shuttle. For the International Space Station program, the Canadian Space Agency is providing a robotic system and its associated ground support equipment.