Abstract: A method, apparatus, system, and computer program product for controlling landing of a vertical landing vehicle. In one illustrative example, a method controls landing of a vertical landing vehicle. A landing profile for landing the vertical landing vehicle is determined by the computer system using a third derivative of a position equation, an initial position, an initial speed, a final speed, and a touchdown point for the vertical landing vehicle. Landing of the vertical landing vehicle is controlled using the landing profile.

Abstract: A method, apparatus, system, and computer program product for controlling landing of a vertical landing vehicle. In one illustrative example, a method controls landing of a vertical landing vehicle. A landing profile for landing the vertical landing vehicle is determined by the computer system using a third derivative of a position equation, an initial position, an initial speed, a final speed, and a touchdown point for the vertical landing vehicle. Landing of the vertical landing vehicle is controlled using the landing profile.

Abstract: A pump for pumping sensitive fluids, such as blood, has no mechanical contact between the impeller and any other structure.

Abstract: An accessory holding device for a ladder assembly includes a body member and at least one mounting member. The body member includes a primary compartment and a plurality of secondary compartments integrally configured with the primary compartment such that the primary compartment is disposed between a first compartment and a second compartment of the plurality of secondary compartments. The primary compartment and the plurality of secondary compartments of the body member are capable of receiving accessories therein. Further, the at least one mounting member adjustably coupled to one of the primary compartments and the plurality of secondary compartments of the body member. The at least one mounting member is capable of removably mounting the body member to the ladder assembly for holding the accessories.

Abstract: According to one embodiment, a simulated mine includes a multiple integrated laser engagement system (MILES) device and a pyrotechnic device disposed in a simulated mine housing that simulates the appearance of an actual mine. The multiple integrated laser engagement system device is operable to transmit a light signal representative of a blast from the actual mine. The pyrotechnic device is operable to detonate simultaneously with transmission of the light signal.

Abstract: A pump for pumping sensitive fluids, such as blood, having no mechanical contact between the impeller and any other structure. The pump comprises a pump housing, an impeller disposed within the pump housing, a magnetic bearing system for supporting and stabilizing the impeller in five degrees of freedom, and a conformally shaped magnetically linked motor for rotating the impeller. The magnetic bearing system and motor advantageously comprise electromagnets and permanent magnets for stability and control of the impeller, and to reduce size, weight, and pump power consumption. Permanent and electromagnets are disposed on the pump housing and permanent magnets are disposed on the impeller such that by controlling electric current through the electromagnets on the housing, the magnetically suspended impeller functions as the rotor, and the housing as the stator of a D.C. motor.

Abstract: A pump for pumping sensitive fluids, such as blood, has no mechanical contact between the impeller and any other structure.