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Pintle
A pintle is a pin or bolt, usually inserted into a gudgeon, which is used as part of a pivot or hinge. Other applications include pintle and lunette ring for towing, and pintle pins securing casters in furniture. Use Pintle/gudgeon sets have many applications, for example in sailing, to hold the rudder onto the boat; in transportation, in which a pincer-type device clamps through a lunette ring on the tongue of a trailer; and in controllable solid rocket motors, in which a plug moves into and out of the motor throat to control thrust. In electrical cubicle manufacture, a pintle hinge is a hinge with fixed and moving parts. The hinge has a pin - the pintle - which can be both external and internal. The most common type consists of three parts, one part on the body of the cubicle, one part on the door, and the third being the pintle. In transportation, a ''pintle hitch'' is a type of tow hitch that uses a tow ring configuration to secure to a hook or a ball combination for the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pintle Injector
The pintle injector is a type of propellant injector for a bipropellant rocket engine. Like any other injector, its purpose is to ensure appropriate flow rate and intermixing of the propellants as they are forcibly injected under high pressure into the Rocket engine#Combustion chamber, combustion chamber, so that an efficient and controlled combustion process can happen. A pintle-based rocket engine can have a greater throttling range than one based on regular injectors, and will very rarely present acoustic combustion instabilities, because a pintle injector tends to create a self-stabilizing flow pattern. Therefore, pintle-based engines are specially suitable for applications that require deep, fast, and safe throttling, such as Lander (spacecraft), landers. Pintle injectors began as early laboratory experimental apparatuses, used by Caltech's JPL, Jet Propulsion Laboratory in the mid-1950s, to study the mixing and combustion reaction times of hypergolic propellant, hypergolic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pintle And Gudgeon
A gudgeon is a socket-like, cylindrical (i.e., ''Gender of connectors and fasteners, female'') fitting attached to one component to enable a pivoting or hinging connection to a second component. The second component carries a pintle fitting, the male counterpart to the gudgeon, enabling an interpivoting connection that can be easily separated. Designs that may use gudgeon and pintle connections include hinges, shutters and boat rudders.Webster's Seventh New Collegiate Dictionary, G & C Merriam Company, 1963, p. 370 The word ''gudgeon'' derives from the Middle English ''gojoun'', from the Middle French ''goujon'', which had the opposite meaning of a dowel or pin. Its first known use was in the 15th century. Types of gudgeons Winged gudgeons A winged gudgeon is one that has extensions that increase its ability to adhere to the fixed surface. At the beginning of the Industrial Revolution, winged gudgeons were used to support water wheel shafts, and later, steam engine shafts. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gudgeon
A gudgeon is a socket-like, cylindrical (i.e., ''female'') fitting attached to one component to enable a pivoting or hinging connection to a second component. The second component carries a pintle fitting, the male counterpart to the gudgeon, enabling an interpivoting connection that can be easily separated. Designs that may use gudgeon and pintle connections include hinges, shutters and boat rudders.Webster's Seventh New Collegiate Dictionary, G & C Merriam Company, 1963, p. 370 The word ''gudgeon'' derives from the Middle English ''gojoun'', from the Middle French ''goujon'', which had the opposite meaning of a dowel or pin. Its first known use was in the 15th century. Types of gudgeons Winged gudgeons A winged gudgeon is one that has extensions that increase its ability to adhere to the fixed surface. At the beginning of the Industrial Revolution, winged gudgeons were used to support water wheel shafts, and later, steam engine shafts. Gudgeon pin This is a crucial com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lunette Ring
A tow hitch (or tow bar or trailer hitch in North America) is a device attached to the chassis of a vehicle for towing, or a towbar to an aircraft nose gear. It can take the form of a tow ball to allow swiveling and articulation of a trailer, or a tow pin, or a tow hook with a trailer loop, often used for large or agricultural vehicles where slack in the pivot pin allows similar movements. Another category is the towing pintle used on military vehicles worldwide. To tow safely, the correct combination of vehicle and trailer must be combined with correct loading horizontally and vertically on the tow ball. Advice should be heeded (see references) to avoid problems. Regional variations North America Trailer hitches for conventional passenger cars, light-duty commercial vehicles, light trucks, and multipurpose passenger vehicles come in two main OEM or aftermarket types: receiver and bumper/fixed-drawbar. Receiver-type hitches consist of a portion with a rearward-facin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rudder
A rudder is a primary control surface used to steer a ship, boat, submarine, hovercraft, airship, or other vehicle that moves through a fluid medium (usually air or water). On an airplane, the rudder is used primarily to counter adverse yaw and p-factor and is not the primary control used to turn the airplane. A rudder operates by redirecting the fluid past the hull or fuselage, thus imparting a turning or yawing motion to the craft. In basic form, a rudder is a flat plane or sheet of material attached with hinges to the craft's stern, tail, or afterend. Often rudders are shaped to minimize hydrodynamic or aerodynamic drag. On simple watercraft, a tiller—essentially, a stick or pole acting as a lever arm—may be attached to the top of the rudder to allow it to be turned by a helmsman. In larger vessels, cables, pushrods, or hydraulics may link rudders to steering wheels. In typical aircraft, the rudder is operated by pedals via mechanical linkages or hydraulics. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weapon Mount
A weapon mount is an assembly or mechanism used to hold a weapon (typically a gun) onto a platform in order for it to function at maximum capacity. Weapon mounts can be broken down into two categories: static mounts and non-static mounts. Static mount A static mount is a non-portable weapon support component either mounted directly to the ground, on a fortification, or as part of a vehicle. Turret A gun turret protects the crew or mechanism of a weapon and at the same time lets the weapon be aimed and fired in many directions. A turret is a rotating weapon platform, strictly one that crosses the armour of whatever it is mounted on with a structure called a barbette (on ships) or basket (on tanks) and has a protective structure on top (gunhouse). If it has no gunhouse it is a barbette, if it has no barbette (i.e., it is mounted to the outside of the vehicle's armour) it is an installation. Turrets are typically used to mount machine guns, autocannons or large- calibre guns. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Merlin (rocket Engine Family)
Merlin is a family of rocket engines developed by SpaceX. They are currently a part of the Falcon 9 and Falcon Heavy launch vehicles, and were formerly used on the Falcon 1. Merlin engines use RP-1 and liquid oxygen as rocket propellants in a gas-generator power cycle. The Merlin engine was originally designed for sea recovery and reuse, but since 2016 the entire Falcon 9 booster is recovered for reuse by landing vertically on a landing pad using one of its nine Merlin engines. The injector at the heart of Merlin is of the pintle type that was first used in the Apollo Lunar Module landing engine ( LMDE). Propellants are fed by a single-shaft, dual- impeller turbopump. The turbopump also provides high-pressure fluid for the hydraulic actuators, which then recycles into the low-pressure inlet. This eliminates the need for a separate hydraulic drive system and means that thrust vectoring control failure by running out of hydraulic fluid is not possible. Revisions Merlin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caster
A caster (or castor) is an undriven wheel that is designed to be attached to the bottom of a larger object (the "vehicle") to enable that object to be moved. Casters are used in numerous applications, including shopping carts, office chairs, toy wagons, hospital beds, and material handling equipment. High capacity, heavy duty casters are used in many industrial applications, such as platform trucks, carts, assemblies, and tow lines in plants. Types Casters may be fixed to roll along a straight line path, or mounted on a pivot or pintle such that the wheel will automatically align itself to the direction of travel. Rigid casters A basic, rigid caster consists of a wheel mounted to a stationary fork. The orientation of the fork, which is fixed relative to the vehicle, is determined when the caster is mounted to the vehicle. An example of this is the wheels found at the rear of a shopping cart in North America. Rigid casters tend to restrict vehicle motion so that the vehicle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landing Gear
Landing gear is the undercarriage of an aircraft or spacecraft that is used for taxiing, takeoff or landing. For aircraft, it is generally needed for all three of these. It was also formerly called ''alighting gear'' by some manufacturers, such as the Glenn L. Martin Company. For aircraft, Stinton makes the terminology distinction ''undercarriage (British) = landing gear (US)''. For aircraft, the landing gear supports the craft when it is not flying, allowing it to take off, land, and taxi without damage. Wheeled landing gear is the most common, with skis or Seaplane, floats needed to operate from snow/ice/water and skids for vertical operation on land. Retractable undercarriages fold away during flight, which reduces drag (physics), drag, allowing for faster airspeeds. Landing gear must be strong enough to support the aircraft and its design affects the weight, balance and performance. It often comprises three wheels, or wheel-sets, giving a tripod effect. Some unusual land ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
