149results about How to "Increase air resistance" patented technology

An adjustable grill shutter system is provided. In one embodiment, adjustment of the grill shutter system can be provided by a method of adjusting a grill shutter system for a vehicle, the method comprising adjusting opening of one or more grill shutters located at a front end opening of the vehicle in response to a non-driven vehicle condition.

A cycling upper garment is provided that enables the wearer's elbows to bend more readily while suppressing the resulting increase in air resistance. The cycling upper garment is provided with an upper garment main body and a pair of sleeves. The sleeves are attached to both sides of the upper garment main body with each of the sleeves having an expanded section that is provided in a portion corresponding to a wearer's elbow joint and configured to expand from both adjacent sections.

A display device includes a substrate including a display area and a non-display area surrounding the display area, a thin-film encapsulation layer disposed on the substrate, and a first blocking dam disposed outside the display area, the first blocking dam having at least one layer. Portions of the first blocking dam is removed, and thus, the divided pieces of the first blocking dam are spaced apart from each other, and a second blocking dam is disposed in at least one of a front portion and a rear portion of the first blocking dam corresponding to the spaced part.

A slide door device for an aircraft includes an upper guide roller at a tip end of an upper arm provided at an upper part of a slide door and a lower guide roller at a tip end of a lower arm provided at a lower part of the slide door that are rollably engaged with an upper guide rail and a lower guide rail that are fixed along an upper edge and a lower edge of a door opening frame formed in a fuselage of an aircraft, respectively. An intermediate guide roller, provided at a tip end of an intermediate arm provided in a door opening, is rollably engaged with an intermediate guide rail that is fixed to an inner surface of the slide door, while smoothly guiding the slide door with the upper guide rail, the lower guide rail, and the intermediate guide rail.

A firearm cartridge with a bullet including a body and a nose element. The body has a forward end, and an opposed rear end, with an intermediate cylindrical portion between the ends. The front end of the body defines a cavity that may have a cylindrical shape. The nose element is formed of a resilient material such as an elastomer, and has a first portion received in the cavity, and a pointed second portion extending from the forward end of the body. The bullet may be received in a centerfire rifle casing, for safe use in a tubular magazine rifle, so that the resilient tip protects against discharge of an adjacent cartridge primer by absorbing energy of recoil or other impulse. The second portion of the tip has a small meplat, and is smoothly contoured with the exterior surface of the front of the bullet, to provide an increased ballistic coefficient.

A launcher system and method for an unmanned aerial vehicle (UAV), wherein the launcher system comprises a barrel comprising a prepackaged internal pusher cup configured behind the UAV housed within the barrel; an expansion chamber operatively connected around the barrel, wherein the barrel extends out of a first end of the expansion chamber; a muzzle adapter operatively connected to a second end of the expansion chamber, wherein the first end of the expansion chamber is positioned opposite to the second end of the expansion chamber; a rifle slip-fitted to the muzzle adapter; and a stand operatively connected to the expansion chamber, wherein a triggering of the rifle causes the internal pusher cup to push the UAV out of the barrel at a predetermined launch velocity in order to attain a predetermined self-propelled flight trajectory.

Methods and systems are provided for reducing aerodynamic drag on a moving vehicle. One example method comprises, during a first vehicle moving condition, operating the cooling fan, and during a second vehicle moving condition, selectively applying a braking torque on the fan.

The launching of an unmanned projectile includes pre-packaging a barrel with a projectile, a pusher cup, and a gas generator. The gas generator generates gas to propel the projectile out of the barrel. A pressure chamber increases a pressure of the gas in the barrel. The pressure chamber comprises a front body portion connected to the gas generator; an aft body portion connected to the front body portion and the gas generator; and a vent sleeve positioned around the front body portion and adapted to provide an aperture through which the gas exits the barrel in order to control a level of gas pressure in the barrel. A triggering of the gas generator causes the pusher cup to push the projectile out of the barrel at a predetermined launch velocity in order to attain a predetermined self-propelled flight trajectory, wherein the triggering causes the pusher cup to exit the barrel.

A cooling air supply system for an aircraft is configured to supply cooling air from the surroundings of the aircraft to at least two devices requiring cooling air (38, 44, 56) within the aircraft. The cooling air supply system includes an air inlet, an air channel communicating with the air inlet, and an air distribution device for the distribution of air from the air channel to the at least two devices requiring cooling air. The air inlet is sized to provide sufficient air flow to accommodate a maximum cooling air requirement of the at least two devices requiring cooling air.

A vane for vertical axis wind power generator includes a vane body defining a rearward recess and having a front plate portion with a through hole; a first arcuate guide bar located in the recess with a second end connected to the vane body and a first end located in the through hole; an openwork screen fitted in the through hole and connected to the first end of the first arcuate guide bar; and a first movable baffle unit slidably fitted around the first arcuate guide bar and pivotally connected to the vane body to openably cover the openwork screen. When the rearward recess is against the wind, the first movable baffle unit covers the openwork screen for the rearward recess to effectively intercept the wind. When the rearward recess is before the wind, the first movable baffle unit naturally opens to reduce the air resistance to the vane.

The invention discloses a vehicle drop protecting system and a vehicle drop protecting method. The vehicle drop protecting system is used for preventing a vehicle and passengers from being injured when the vehicle drops down; and the vehicle drop protecting system comprises a parachute, an airbag and an executing module, wherein the parachute is arranged on a vehicle roof; the airbag is arranged on the lower surface of a vehicle floor; and the executing module is used for opening the parachute and inflating the airbag when the vehicle drops down. The vehicle drop protecting system opens the parachute on the vehicle roof and the airbag below the floor when an automobile runs out of a road due to a too high speed and drops down, the airbag below the floor acts on the ground, the airbag is compressed, and at the moment, a one-way valve is opened, air in the airbag is released out gradually, so that the vehicle can land steadily, the impact of the ground on the vehicle is relieved, and the safety of the vehicle and the passengers is effectively protected.

The present invention provides a blade for a vertical shaft windmill capable of easily suppressing the excessive rise of the rotating speed of the windmill by a simple mechanical structure when the rotating speed rises beyond a prescribed value when wind is blowing at a high velocity and a lift type vertical shaft windmill having the blade. This blade (1) comprises an air brake (2) and a bearing (3) mounted on the trailing edge side thereof from the gravity center of the air brake (2). The air brake (2) is rotatably mounted in the blade (1) through the bearing (3). Also, a spring receiving plate (6) of roughly S-shape is mounted on the front inner surface of the air brake (2). The spring receiving plate (6) is largely projected forward of the air brake (2) and energized by a spring material (7) stored at the front part of a wind receiving chamber (12). When the rotating speed of the windmill rises beyond the prescribed value, the leading edge side of the air brake (2) is projected from the surface of a wing by a centrifugal force, and the trailing edge side of the air brake (2) is sunk from the surface of the wing. Accordingly, since an air resistance producing part is formed, the rise of the rotating speed of the windmill can be suppressed.

A device for liquid cooling an electric motor having a rotor and a stator includes at least one cooling liquid applicator arranged to apply cooling liquid from the side of the stator onto an end portion of the stator. The cooling liquid applicator is moveably arranged relative to the stator so that the cooling liquid by means of the movement of the cooling liquid applicator is applied onto different areas of the end portion. In this way a continuous stream of cooling liquid can be applied onto the end portion of the stator leading to a reduced risk for erosion of located coil ends.

A damper actuator motor device includes a fan brake device which is secured to a motor rotor shaft and is configured to reduce motor rotation speed in a preferential direction. Preferably, the fan brake device has an asymmetric configuration, and is adapted to gather air radially in an enclosed cavity and discharge it axially in one direction. The fan device preferably is adapted to project a size that takes up more than half of the space of the cavity. When the motor is back driven, the fan brake device causes differentially pressure and air resistance in a confined area, producing a drag and braking force that increases with motor speed. The invention can be applied to motor actuators used to control air dampers and other valves in gas or fluid delivery systems. The invention can also be used to reduce water hammer in water delivery systems.

A wad or shot cup having a forward cylinder portion receiving a payload and a rear cylinder portion receiving a charge of propellant. One or more latent deceleration features can be formed in a surface of the sidewall extending along the rear cylinder portion. The latent deceleration features can be spaced apart from a rearward end of the shot cup and can be deployed to form deceleration petals after the shot cup is fired from a firearm. A series of longitudinal slits can be formed in the forward cylinder portion so that a portion of the sidewall expands radially adjacent the longitudinal slits after the shot cup is fired from a firearm for urging at least a portion of the payload to exit the forward cylinder portion.