Abstract: A magnetohydrodynamic (MHD) flow control mechanism is described which substantially improves the existing processes in that smaller magnetic fields, requiring far less mass, may be placed away from the forebody of the spacecraft to produce Lorentz forces that augment the lift and the drag forces for guidance, navigation, and control of the spacecraft. The MHD flow control mechanism may also be configured to provide additional thermal protection of the electrodes therein.

Abstract: A magnetohydrodynamic (MHD) flow control mechanism is described which substantially improves the existing processes in that smaller magnetic fields, requiring far less mass, are placed away from the forebody of the spacecraft to produce Lorentz forces that augment the lift and the drag forces for guidance, navigation, and control of the spacecraft.

Abstract: A stowable surface including an extending surface support assembly, for use as a table, bed, seat, stand, or other purpose requiring a substantially horizontal surface which folds away. The surface support assembly pivots between a deployed position and a stowed position, the surface support assembly assuming an extended position when deployed and a retracted position when stowed. A locking element is engaged to prevent extension of the surface support assembly when the surface support assembly is stowed. The locking element is moved into a disengaged position to permit extension of the surface support assembly as the surface support assembly pivots during deployment.

Abstract: The present invention relates to a hysteroscope of the type comprising an outer envelope forming a cannula, means for insufflation of a fluid, particularly a gaseous fluid, such as for example carbon dioxide, inside the uterine cavity to distend the walls thereof, and an inner envelope forming an endoscope tube, of smaller diameter than the outer envelope and adapted to slide therein, this inner envelope containing light transmission means for conducting light to the distal end of said inner envelope and comprising on the one hand means for mechanically placing the hysteroscope in operating position, substantially fluid-tight at the level of the cervix of the uterus and on the other hand a portable device for supplying said fluid, fast with said hysteroscope.