Why is it called a swash plate?

ETYMOLOGY OF THE WORD SWASH PLATE From swash (obsolete n) an oblique figure or ornament, from aswash: see swash letter. Etymology is the study of the origin of words and their changes in structure and significance.

How does a helicopter rotor system work?

Fully articulated rotor systems are found on helicopters with more than two main rotor blades. As the rotor spins, each blade responds to inputs from the control system to enable aircraft control. The center of lift on the whole rotor system moves in response to these inputs to effect pitch, roll, and upward motion.

What makes helicopter to lift up?

A helicopter’s rotor blades are wings and create lift. An airplane must fly fast to move enough air over its wings to provide lift. A helicopter moves air over its rotor by spinning its blades.

What is the use of swash plate in axial piston pump?

The Swash Plate block models a single, piston-actuated swash plate within an axial-piston pump. It translates linear actuation into rotational motion that, when connected to the Valve Plate Orifice (IL) block, periodically connects the piston with the pump intake and discharge.

Where are swash plate pumps used?

The swashplate engine uses a swashplate in place of a crankshaft to translate the motion of a piston into rotary motion. Internal combustion engines and Stirling engines have been built using this mechanism. Duke Engines has been working on such a platform since 1993.

Which type of motor has a swash plate?

Axial Piston Motors, Variable Displacement, Swash Plate, Size: 85, 112,160, Nominal Pressure: 49 Mpa (5,800 psi), Max. Pressure: 45 MPA (6,500 psi). The M7V / M7X series are variable/fixed displacement motors of swash plate design that can be used in high pressure and high-speed condition.

What is flapping and feathering?

Flapping, the vertical up/down movement of the blades, is not directly controlled. What a pilot controls is the blade feathering or pitch angle. Increasing feathering / pitch generally increases the aerodynamic forces on the blades, which changes the flapping.

How does lift work?

In heavier-than-air craft, lift is created by the flow of air over an airfoil. The shape of an airfoil causes air to flow faster on top than on bottom. The fast flowing air decreases the surrounding air pressure. Because the air pressure is greater below the airfoil than above, a resulting lift force is created.

What is the purpose of a swash plate in a piston pump?

Pumping Action FIGURE 1A. Swash plate angle controls the output flow of the pump. Swash plate angle is controlled by the force generated against the swash plate by the pumping pistons and by the force of the servo piston.

Which pump uses swash plate?

axial piston pump
The axial piston pump drives a series of pistons aligned parallel with a shaft through a swashplate to pump a fluid. A common example of a swashplate application in a fluid pump is the compressor of a present-day automobile air conditioning system.

What is blade coning?

Blade coning. An upward sweep of rotor blades as a result of lift and centrifugal force.

What is drag hinge?

The hinges of a helicopter that permit movement as the blade drag varies during rotation. These are located approximately at the root of the helicopter main rotor blade.

What is blade stall in helicopter?

Description. Retreating blade stall is a hazardous and damaging flight condition in helicopters and other rotary wing aircraft, where the rotor blade on the retreating side of the rotor disc in forward flight and therefore with the smaller resultant relative wind exceeds the critical angle of attack.

Where is fuel stored in a helicopter?

The H145 has two fuel tanks which are located under the cabin floor (seat area), made of impact resistant rubber bladders. The fuel filler is located on the left side, behind the passenger door. Maximum tank capacity …………………………………………………………………………………

How does thrust work?

Thrust is a mechanical force. It is generated most often through the reaction of accelerating a mass of gas. The engine does work on the gas and as the gas is accelerated to the rear, the engine is accelerated in the opposite direction. The acceleration of the engine mass produces a force on the aircraft.

What controls the swash plate in hydraulic pump?

Swash plate angle controls the output flow of the pump. Swash plate angle is controlled by the force generated against the swash plate by the pumping pistons and by the force of the servo piston. The force of the servo piston is greater than the force of the pumping pistons when both are at the same pressure.

What is helicopter feathering?

Feathering. The action that changes the pitch angle of the rotor blades by rotating them around their feathering (spanwise) axis. Feathering axis. The axis about which the pitch angle of a rotor blade is varied. Sometimes referred to as the spanwise axis.

How does a swash plate work?

When the pump is working, the piston will produce force to the swashplate through the chuck. If the swashplate clearance increases, then the swashplate will move to that side. After a certain offset, the ability of automatic centering of piston components will make the swashplate return to the center.

How is the swash plate 10 made?

The swash plate 10 is produced by inserting the required number of welded, coated and preheated ball-stem assemblies 24, 26 into the mold cavity and the casting poured and ejected. The swash plate casting with inserts is machined to final dimensions.

What are the Alternative mechanics to the stationary swash plate?

Alternative mechanics to the stationary (outer) swashplate are the hexapod and the universal joint . Swashplates for helicopters having two rotors mounted on the same shaft are much more complex than the single rotor helicopters.

What is an example of a swash plate pump?

A common example of a swashplate application in a fluid pump is the compressor of a present-day automobile air conditioning system. By varying the angle of the swashplate, the pistons’ stroke (and, therefore, the compressor’s cooling capacity) can be dynamically adjusted.