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How to calculate the ratio of the inlet-to-exit area of the nozzle

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12y ago

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Why do rockets have a Diverging Nozzle at the exit?

To increase the exhaust velocity. +++ Pressure, not velocity. A gas flowing through a divergent nozzle gains pressure at the cost of speed.


How do you calculate the velocity of nozzle in cylinder?

The velocity of the nozzle in a cylinder can be calculated by dividing the displacement by the amount of time. For example, if 1 cubic foot of gas is released over 1 minute, it would have a velocity of 1 foot per minute.


How is chocked nozzle thrust calculated?

Choked nozzle thrust can be calculated using the equation: F = mdot * ve + (pe - pa) * Ae, where F is the thrust, mdot is the mass flow rate, ve is the exhaust velocity, pe is the exit pressure, pa is the ambient pressure, and Ae is the exit area. This equation takes into account the momentum change of the exhaust gas and the pressure difference between the exit and ambient pressures.


What is the water pressure as it exits into the air?

The water pressure decreases as it exits into the air due to the change in environment from a confined space to open air. The pressure depends on factors such as the speed of the water flow, height of the exit point, and the design of the exit nozzle.


A rocket nozzle has an exit-to-throat area ratio of 4.0 and a throat area of 100 cm2 The exhaust gases are generated in a combustion chamber with stagnation pressure equal to 4 MPa and stagnation te?

The exit area of the rocket nozzle can be calculated as 400 cm2 (4 x 100 cm2). The exit pressure of the exhaust gases can be calculated using the isentropic flow relations and properties at the throat. Given the stagnation pressure and temperature at the combustion chamber exit, the isentropic flow relations can further help determine the exit velocity and other flow properties.


What are two thrust factors that a rocket engine depends on?

•Thrust depends on two factors: -rate at which momentum leaves the rocket through the nozzle -Exit pressure pexit


What is critical pressure in nozzle?

Critical pressure in a nozzle is the pressure at which the flow of material through the nozzle reaches its maximum. Beyond which any increase in pressure will not result in an increase in flow. The point at which the velocity of a fluid in the throat of the nozzle reaches the local speed of sound, creating a sonic wave, or a sonic choke.


Where are hot gases with a lot of pressure on a rocket held?

They are generated in the combustion chamber. Then they exit the rocket through the nozzle. The gas is never actually "held" in the sense of a storage tank.


Why does pressure drops in a nozzle?

Pressure drops in a nozzle due to the conversion of potential energy into kinetic energy as the fluid accelerates through the nozzle. This decrease in pressure is necessary for the fluid to reach a higher velocity.


How do you calculate air nozzle velocity?

Air nozzle velocity can be calculated using the formula v = sqrt((2 * P) / ρ), where v is the velocity in meters per second, P is the pressure in pascals, and ρ is the air density in kilograms per cubic meter. Simply input the values of pressure and air density into the formula to determine the air nozzle velocity.


How will heat transfer affect the fluid velocity at the nozzle exit?

Heat transfer can affect the fluid density at the nozzle exit, which in turn can impact the fluid velocity. An increase in heat transfer can lower the fluid density, resulting in an increase in velocity at the nozzle exit due to conservation of mass. Conversely, a decrease in heat transfer can raise the fluid density, leading to a decrease in velocity.


What is nozzle pressure?

Pressure build up due to restricted orifice.