摘要:
A float has a front-to-back length, a width, and a height where the front-to-back length of the float is strictly greater than the height of the float which in turn is strictly greater than the width of the float. At least a bottom portion of the float is watertight. The float includes an access panel to access the inside of the float. A battery is inside the float and is accessible via the access panel.
摘要:
An aerodynamically optimized drag-reduction means and method for optimal minimization of the drag-induced resistive forces upon a terrestrial vehicle wheel, where the drag-induced resistive moments on wheel surfaces pivoting about the point of ground contact are reduced, and the vehicle propulsive forces needed to countervail the resistive forces on the wheel are reduced. The drag reduction means includes: a streamlined wheel cover positioned on a vehicle to shield the faster moving upper wheel surfaces from headwinds; a streamlined wind-deflecting fairing positioned on a vehicle to shield the faster moving upper wheel surfaces from headwinds; an engine exhaust pipe diposed on a vehicle whereby exhaust gases deflect headwinds to shield the faster moving upper wheel surfaces of an automotive wheel; an automotive spoked wheel having streamlined oval-shaped wheel spokes arranged in one or more rows for greater axial strength; a streamlined tailfin rotatably attached to a wheel spoke, which thereby may pivot about the spoke in response to varying crosswinds; and a tire having streamlined tread blocks arranged in an aerodynamic pattern.
摘要:
A system for airboarding and performing stunts behind an aircraft includes a lifting board, a handle, and a tow rope connected to the board and handle. The lifting board may include landing gear, a binding for securing an operator to the board, tail sections for stabilizing the board during flight, and ailerons for facilitating turns and rolls. The system may include a control system integrated into the handle and board that improves the operator's ability to control the board.
摘要:
Flying device, in which there is a fuselage (2, 2′), wings (8, 9), which are connected to each other to form an essentially looped structure, elements (4, 5) for creating a flying force, and the desired elements (e.g., 7, 7′) for controlling the flying device (1). The wings (8, 9) of the flying device (1) form a unified totality detachable from the fuselage (2, 2′). A wing construction is also included.
摘要:
An aerodynamically optimized drag-reduction apparatus for optimally reducing the drag-induced resistive forces upon a terrestrial vehicle, where the drag-induced resistive moments on wheel surfaces pivoting about the stationary point of ground contact are reduced, and the vehicle propulsive forces needed to countervail the resistive forces on the wheel are reduced. The drag reduction apparatus includes: a streamlined fairing positioned on a vehicle to shield the faster moving upper wheel surfaces from headwinds; an engine exhaust pipe disposed on a vehicle whereby exhaust gases deflect headwinds to shield the faster moving upper wheel surfaces of an automotive wheel; an automotive spoked wheel having streamlined oval-shaped wheel spokes; a streamlined spoke tailfin rotatably attached to a wheel spoke; a cycle wheel with a tapered spoke having a thin aerodynamic profile near the rim and tapering to a round profile towards the central hub; and a tire having streamlined tread blocks arranged in an aerodynamic pattern.
摘要:
A system for airboarding and performing stunts behind an aircraft includes a lifting board, a handle, and a tow rope connected to the board and handle. The lifting board may include landing gear, a binding for securing an operator to the board, tail sections for stabilizing the board during flight, and ailerons for facilitating turns and rolls. The system may include a control system integrated into the handle and board that improves the operator's ability to control the board.
摘要:
Apparatus and method for propelling a user wearing paragliding equipment are disclosed The apparatus includes at least one thruster for providing thrust in a predetermined direction; and an attachment element for attaching the at least one thruster to a user's body such that the thruster is secured against the front portion of the user's body.
摘要:
An aerodynamically optimized drag-reduction means and method for optimal minimization of the drag-induced resistive forces upon a terrestrial vehicle wheel, where the drag-induced resistive moments on wheel surfaces pivoting about the point of ground contact are reduced, and the vehicle propulsive forces needed to countervail the resistive forces on the wheel are reduced. The drag reduction means includes: a streamlined wheel cover positioned on a vehicle to shield the faster moving upper wheel surfaces from headwinds; a streamlined wind-deflecting fairing positioned on a vehicle to shield the faster moving upper wheel surfaces from headwinds; an engine exhaust pipe diposed on a vehicle whereby exhaust gases deflect headwinds to shield the faster moving upper wheel surfaces of an automotive wheel; an automotive spoked wheel having streamlined oval-shaped wheel spokes arranged in one or more rows for greater axial strength; a streamlined tailfin rotatably attached to a wheel spoke, which thereby may pivot about the spoke in response to varying crosswinds; and a tire having streamlined tread blocks arranged in an aerodynamic pattern.
摘要:
This light aeroplane at the same time fulfilled the weight limits for the European ultra light class or acolyte class as do at the same time for the US-American sport plan Category. It comprises an engine arranged at the nose and is provided with tractor airscrew and the cabin cell that is arranged behind the engine and is wide enough for two adjacent passenger seats. A central tube (1) with a 200 mm diameter extends forwards towards the engine and to the rear at least behind the front edge of the lateral rudder and elevator control. Everything else is constructed around said tube. A square profiled element (12) is transversally guided edgeways beneath the central tube (1) and is rigidly connected to the same in a positively engaged manner. An upwardly projecting tube bend (11), which arches over the length of the square profiled element is fixed to the rear side of the square profiled element (12) with the ends thereof. The level of a virtual plane cabin floor is defined above the square profile (12). The free space above said floor is orthorhombic: at least 190 cm long, at least 45 cm wide and at least 40 cm high.