Abstract: A multi-modal screw propelled excavation system for small body sample collection includes a craft having screw-shaped wheels to traverse the surface of the target body. When the craft is ready to collect a sample, the craft opens a door to an excavation bin on a bottom face of the craft, and uses the screw-shaped wheels to churn up regolith which is captured by closing the door.

Abstract: A system of brackets and rails for attaching wheels, towing, and accessory devices to a pontoon water bike to increase the transportability and utility of the craft by making it towable by pedestrian and bicycle, converting it to amphibious operation, and allowing a variety of other attachments to create a more capable and efficient watercraft.

Abstract: An all-terrain rover has a ladder frame having one or more crosspieces, two drive units connected on opposite sides of the frame, first and second auger cylinders engaged with the drive. The drive units are in contact with the axes of the auger cylinders and the flange of the first cylinder is wound in an opposite direction to the flange of the second cylinder. The cylinders are counter-rotated to urge the rover forward. Sampling equipment is mounted on the frame. In an embodiment, each cylinder further comprises a conical end cap at each end. Each cylinder may have a frustaconical end cap at each end, and each cylinder may be buoyant.

Abstract: A buoyancy module (10) may include a buoyancy body (11) for a vehicle, in particular, a military vehicle (1) such as a watercraft, and a land driving unit (13) for operating the vehicle (1) as a land vehicle. A vehicle (1) may include a base module (20), for accommodating crew members, and a buoyancy module (10) which can be arranged on the base module for operating the vehicle (1) as a watercraft.

Abstract: The present invention provides, with reference to FIG. 1, an amphibian for use in land and marine modes comprising: a planing hull; three wheel stations, two of the three wheel stations being front wheel stations provided one on each side of and in the front half of the amphibian, and the third wheel station being a rear wheel station provided in a central region in the rear half of the amphibian; at least one wheel provided at each wheel station, each wheel being movable between a protracted land mode position and a retracted marine mode position; land propulsion means to propel the amphibian on land in the land mode, the land propulsion means comprising at least one of the wheels; and marine propulsion means to propel the amphibian on water in the marine mode, the marine propulsion means comprising at least two impellers or propellers provided one on each side of the rear wheel station.

Abstract: A human powered aerodynamic amphibious recumbent vehicle having an outer shell that operates as the cycle exoskeleton, aerodynamic fairing, and boat hull. The vehicle includes a propulsion design adding paddles to the front drive wheels or pairing traditional pedaling to a propeller mounted on a kayak rudder via a flexible axle. Composite materials are used to form the vehicle and allow it to remain lightweight, abrasion tolerant, structurally rigid under rigorous operating conditions, and waterproof. The vehicle can enter and exit the water by riding directly in and out, or can be lifted by one person safely.

Abstract: An amphibious vehicle has retractable wheels (2, 3) attached to hubs (2), and a planing hull (10, 11, 3). Front wheels are arranged to be steered by a power assisted transversely mounted element (16), which may be a rack and pinion unit. The element may be linked to the wheels by links (14, 14?), which fold up to position (14?) when the wheels are retracted. Actuating rod (28) is mounted to said element, and arranged for transverse movement. A flexible coupling means, such as cable (34) and sleeve (36), connects rod (28) to a steerable part (42, 4) of a marine propulsion unit, to effect marine steering. Road and marine steering may be operable simultaneously. More than one front steered axle, and/or marine propulsion unit, may be fitted. The steering system is readily adapted to all kinds of power assisted steering, and also to “steer by wire”.