摘要:
A method and system is disclosed for determining a flight characteristic of an object in a flight path, the flight characteristic to be determined can be the object's position while in flight, a linear velocity, a rotational velocity or an acceleration of the object. In one embodiment, the method comprises arranging a radiation source in a plane, the plane being located to intersect the flight path of the object. The radiation source irradiates the object at least at the intersection with the flight path. The object is provided with at least first and second surface features having a predetermined configuration such as, for example, equally spaced parallel lines painted on the surface of the object. Reflected radiation from the object is measured with a sensor from the surface features and a flight characteristic of the object is determined based on the measured reflected radiation and the predetermined configuration of the surface features.
摘要:
A manually operated rotatable impact tool including: a driven member having means for retaining and driving a fastener about an axis, the driven member further having at least one impact stop offset from the axis; a driving member rotatably connected to the driven member for driving the driven member about the axis to loosen or tighten the fastener; an impact mass movable along a path in communication with the impact stop; a spring disposed in the path for storing energy upon rotation of the driving member; and an energy releasing mechanism for releasing the stored energy and allowing it to be at least partially transferred to the impact mass such that the impact mass accelerates and strikes the impact stop upon the release of the stored energy.
摘要:
A method for enhancing an aerodynamic performance of an unmanned projectile. The method including at least one of the following: (a) morphing a cross-sectional shape of the projectile after launch thereof; (b) morphing a longitudinal shape of the projectile after launch thereof; (c) bleeding a fluid at a base of the projectile during flight thereof: (d) varying a base cone angle of the projectile as a function of speed thereof; (e) deploying at least one wing from a body of the projectile after launch thereof; and (f) deploying a fin from the body of the projectile after launch thereof.
摘要:
An apparatus for clamping together a first and second web of a vehicle seatbelt is provided. The apparatus includes a first body potion; at least a second body portion connected at least intermediately to the first body portion; a clamping means for clamping the first and second body portions such that a transverse portion of the first and second webs is captured between the first and second body portions; and at least one locking member movably connected to at least one of the first and second body portions to prevent axial movement of the first and second webs.
摘要:
A container including: at least one wall defining an interior cavity; a propellant disposed in the interior cavity; a release valve disposed in the at least one wall for selectively releasing the propellant from the interior cavity; and a heater for heating the propellant in the interior cavity. Preferably, the container is provided with a venturi device and operates as a suction device upon release of the propellant from the interior cavity into the venturi device.
摘要:
A projectile including: at least two electronic or electrical components; and a casing, the casing having at least a portion thereof acting as a communication bus for connecting the at least two electronic/electrical components. The projectile casing can further have a window for inputting a signal or charging an internal power storage device.
摘要:
A manually operated rotatable impact tool including: a driven member for retaining and driving a fastener about an axis, the driven member further having at least one impact stop offset from the axis; a driving member rotatably connected to the driven member for driving the driven member about the axis to loosen or tighten the fastener; an impact mass movable along a path in communication with the impact stop; a spring for biasing the impact mass away from an abutment on the driving member; a movable stop plate biased into the path and movable out from the path; and a stop mover rotating with the driving member for engaging and moving the movable stop plate from the path upon a predetermined angular rotation of the driving member; wherein rotation of the driving member forces the impact mass to abut the movable stop plate and compress the spring until the stop mover moves the movable stop plate from the path when the driving member is rotated the predetermined angular rotation thereby releasing the impact mass to strike the stop.
摘要:
Apparatus for compensating for positioning, pointing and/or orientation errors caused by deflections of structural members and components of a high performance machine or device and/or for reducing vibration inputs to such machine or device and/or for micro-positioning such machine or device so as to improve the operational performance of such machine or device. The apparatus utilizes one or more active-type actuators, such as piezoelectric ceramic type actuators, which are arranged in a predetermined manner relative to the machine or device. A servo control device operating in accordance with a predetermined algorithm may be utilized for controlling the actuators or, alternatively, the apparatus may operate in an open loop manner.
摘要:
Apparatus for compensating for positioning, pointing and/or orientation errors caused by deflections of structural members and components of a high performance machine or device and/or for reducing vibration inputs to such machine or device and/or for micro-positioning such machine or device so as to improve the operational performance of such machine or device. The apparatus utilizes one or more active-type actuators, such as piezoelectric ceramic type actuators, which are arranged in a predetermined manner relative to the machine or device. A servo control device operating in accordance with a predetermined algorithm may be utilized for controlling the actuators or, alternatively, the apparatus may operate in an open loop manner.
摘要:
A method for preventing serious injuries to a person participating in a physical activity, such as pole-vaulting, which occurs at least partially over a hard surface. The method includes: detecting predetermined criteria indicative of a condition which requires deployment of the material into the deployed position; and moving a material from a retracted position to a deployed position upon detection of the predetermined criteria, wherein the material substantially does not impede the physical activity while in the retracted position and cushions the person from falling onto the hard surface while in the deployed position.