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Untitled
BG
by
ben greeen
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Updated Dec 14, 2021
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Chapters
00:00
Chapter 1
00:02
Chapter 2
00:24
Chapter 3
02:35
Chapter 4
03:36
Chapter 5
04:16
Chapter 6
Audio Transcript
Auto-generated
00:01 - 00:03
pneumatic and hydraulic systems.
00:04 - 00:07
What are hydraulic systems and how do they work?
00:07 - 00:10
Hydraulic systems use liquid under pressure to do work.
00:11 - 00:15
It uses the in compressibility of liquids as its advantage.
00:15 - 00:19
Multiplying a force is also important to transmit force.
00:19 - 00:23
There are several examples of hydraulic systems such as airplanes, breaks,
00:23 - 00:25
Jax and more
00:27 - 00:28
airplane hydraulics.
00:29 - 00:33
The reservoir it holds a hydraulic fluid which is a fuel.
00:33 - 00:35
This is the base of the system.
00:35 - 00:37
It has a supply and return line which that's
00:37 - 00:40
a fluid flow through the entire system repeatedly.
00:41 - 00:45
There is also a pressurize er which maintains a positive flow of the system
00:46 - 00:46
pumps.
00:46 - 00:50
A prompt pressurize is foods at a constant rate
00:50 - 00:54
in an airplane, either engine driven pumps or electric pumps are used
00:55 - 00:58
just in case these pumps fail in an emergency situation
00:58 - 01:00
there's a hand pump,
01:00 - 01:01
filters,
01:01 - 01:05
a filter removes any impurities in the hydraulic fluid of fuel.
01:05 - 01:09
This is so that it doesn't negatively impact the hydraulic system.
01:09 - 01:12
There are usually filters on all main parts of the airplane,
01:13 - 01:15
such as the supply line and return line
01:16 - 01:20
valves. A valve controls the flow of fluids.
01:20 - 01:25
There are four types of valves in an airplane which all have different functions.
01:25 - 01:28
Firstly, a check valve is a valve that flows one way
01:28 - 01:31
which prevents any malfunctions.
01:31 - 01:34
Secondly, a shut off valve stops the flow of the fluid
01:34 - 01:36
which is used in case of emergencies.
01:37 - 01:38
Thirdly,
01:38 - 01:40
a pressure reducing valve decreases pressure in
01:40 - 01:43
certain areas for the system to function.
01:44 - 01:48
Finally, a sector valve changes the direction of pressurized fluids
01:48 - 01:49
through the,
01:50 - 01:52
through the rotation of the valve.
01:52 - 01:53
The acute er
01:54 - 01:57
this is where the hydraulic pressure is converted to mechanical action.
01:58 - 01:59
The cuter piston
02:00 - 02:02
moves from the pressure of the fluid
02:02 - 02:05
and the fluid is redistributed back to the reservoir.
02:06 - 02:09
This controls the brakes, steering controls and lightning.
02:10 - 02:11
The accumulator.
02:11 - 02:14
The accumulator holds pressurized fluids
02:14 - 02:16
have pressurized water and air.
02:16 - 02:21
It can provide pressurized fluids on the actuator needs more pressurized fluid.
02:22 - 02:24
This is often used for emergencies,
02:24 - 02:28
such as when the pump fails or the pressure of the fluid decreases.
02:29 - 02:35
The largest manufacturer of airplane hydraulic systems is a bowling company,
02:37 - 02:38
hydraulic brakes.
02:39 - 02:44
A car moves when the gas pedal is pressed and the energy is transferred to the engine
02:44 - 02:46
and the gas pedal is released.
02:46 - 02:49
It slowed this down as there is no force to keep it moving,
02:49 - 02:53
it will stop eventually, but there is no way to tell the timing.
02:53 - 02:55
This is why brake pedals are used.
02:56 - 03:01
When the brake pedal is pressed, a vast hydraulic system begins to stop the car.
03:01 - 03:03
The fourth from the brake pedal goes to the
03:03 - 03:07
push rod servo and then the master cylinder,
03:07 - 03:10
the master cylinder converts the mechanical force
03:10 - 03:13
into hydraulic force by using pistons.
03:13 - 03:16
This creates pressure in the entire hydraulic system.
03:17 - 03:20
The brake fluid goes to all four tires.
03:20 - 03:23
When the brake pedal is pressed of force is transmitted
03:24 - 03:26
but after it remains there creating no force
03:27 - 03:32
this makes the car stop. This is why there is a slight acceleration before breaking
03:36 - 03:37
adala jacks.
03:38 - 03:42
A hydraulic draft uses liquids to do heavy lifting.
03:42 - 03:47
It uses a two main basic principles of levers and multiplying of force
03:47 - 03:52
as a small piston and a larger question, which is connected by a tube
03:52 - 03:57
due to the rules of force multiplication. A small force on the small piston
03:57 - 04:01
results in a larger force on the large piston.
04:01 - 04:05
The ability of levers to sustain large loads
04:05 - 04:08
allows the hydraulic jack to lift heavy items.
04:08 - 04:13
The liquid transferred from the reservoir to both pistons creates the force
04:13 - 04:16
they are used for car, horse and elevators.
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