Hydraulic Definition and 314 Threads

Homework Statement The following questions apply to a confined groundwater aquifer consists of a homogeneous sandy soil with hydraulic conductivity, K, of 3 x10-2cm/sec. In the area of interest, the hydraulic head is 500 m, the aquifer length is 10 km, and the cross-sectional area of the...

Hi, I've been reading up on hydraulic fluid power design to design a lifting system for a loader bucket I'm building for my 20Hp tractor. I know how to calculate the force/ speed of one cylinder extending; but I am a little lost as far as using two cylinders. If I have a total weight of 2000...

Most examples of hydraulic mechanical advantage display a little force on a small piston traveling a long distance to move a bigger piston a short distance with a lot of force. With the inverse, if we have an input of: 100 lbs of force on a 3" diameter piston traveling 1" the output would be 33...

I've come across two different approaches to quantifying what l is in the equation for hydraulic gradient Δh/L. In this first picture L is the parallel distance along the datum across the reference plane But in this second picture L is the length along the pipe Why are the two L's...

Hello, In Vehicle Braking system manufacture suggest me to use SAE 20W-40/APIGL 4/ZFTF - ML05F oil for disk brake. But i want to use ISO VG 46. So is it feasible oil?

I need to deliver air up to 5 meters high. I am thinking of using pump since I can find easily (no buying anything). Is it possible to deliver air using hydraulic centrifugal pump ?

Homework Statement A deposit of 20 feet long and 10 feet high, has a width of 8 feet at the bottom and 18 feet at the top. In the bottom is an orifice an area of 24 in2 and discharge coefficient of 0.60. If the tank is full calculate the time required for the lower level 6 feet. Consider full...

Homework Statement In the figure are the dimensions, and the question is the time in which the take will empty Area of orifice 1 cm2 Discharge coefficient: 0.447 Gravity 10 m/s2 Homework Equations [/B] Area of surface = 8x = 8 (2 H) = 16H The Attempt at a Solution . The red lines are the...

< Mentor Note -- thread moved to HH from the technical engineering forums, so no HH Template is shown >[/color] Hi, I am struggling with a couple of questions and would like to check my working so far. Question 6: To explain the operation: I believe the electric motor turns the pump which...

Hello, I am working on a hydraulic cylinder application that will lift some weight that is not aligned with the axis of the cylinder. Take a look at the picture and imagine that instead of ropes there is a hydraulic cylinder fixed to the beam doing the lifting. The load creates moment since it...

Hello everyone, I am designing one hydraulic system. In that system their is total 8 no of component function. When all the component work that time its take 150 Bar pressure and 140 lpm flow. but this all are all time not working together. they are hardly 4 to 5 time working together in day...

I want some suggestion about designing a hydraulic exoskeleton whose input would be the kinetic motion of the body...the force exerted by body would be used to give an input to the hydraulic system which would inturn give a larger force as output in real time.for example an arm with exoskeleton...

Hello guys, this is my first time here take an apology if I choose wrong section of forum. I just want to know should in shell of double-acting hydraulic cylinder (as in hydraulic presses ) should longitudinal/axis stress be analyzed beside radial and Circumferential/hoop stress and take in...

Ran across this recently... http://www.mobilehydraulictips.com/hydraulic-hybrid-vehicles-future-driving/ Peugeot apparently has a hydraulic hybrid car in development... http://www.extremetech.com/extreme/146450-peugeot-unveils-hydraulic-air-hybrid-80-mpg-car From what I've read from Wikipedia...

Hi Mentor i am in little confusing about force, according Newton third law force on action and reaction is equal but according hydraulic system are not equal. https://www.facebook.com/photo.php?fbid=1749685448591067&set=pb.100006488851023.-2207520000.1429362639.&type=3&theater Thank you for...

hey people. literally just joined, hehehe my question is, can a hydraulic pump be used as a hydraulic motor. i have an idea and want to have it operating using hydraulics rather than having shafts and gearboxes to transfere to work. any comments welcome, good or bad, but i prefere good...hehehe

Homework Statement A hydraulic log splitter with a maximum operating pressure of 3000 psi is powered by a 5 hp hydraulic engine. If the log splitter is capable of generating a maximum nominal force of 10 tons (20000 lb) what is the effective diameter of the hydraulic cylinder? What is the...

Hi everyone, this is my first post I was wondering how can I turn a pneumatic artificial muscle into a hydraulic one using water. http://www.instructables.com/id/How-to-make-air-muscles!/ These are the air muscles I was planning on using. What sort of pump would I need? Please be specific as...

Hi, I just confuse how to know this hydraulic diameter, would you mind to help me? hydraulic diameter is for reynold calculation then heat transfer coefficient. Thank you

I am constructing a home built flight simulator and am using hydraulic motors with a arm attached to the motor spindle for movement. I need to know how much torque I would need in the motor to lift 1000 lbs. Also I need to know how fast the motor should be to move the weight 1 foot in 2 seconds...

when i use hydralick jack to lift up my car i put less energy and pick up heavey car ,so am i geting more by puting less in a hydralick system?

Hello, I could use some help determining what size hydraulic cylinder I need to be able to tilt my turbine tower up. What I have is a 70 ft tower where the first 20 feet weigh 2500 lbs, the 2nd 20 weigh 1700 lbs and the 3rd 20 ft weigh 1000 lbs and the last 10 feet weigh 1000 lbs. For a total...

Hi, I would like to understand what is the difference between the case when w=0 and the wase when w>0 in this device: http://imageshack.com/a/img540/3493/Ntztkk.png The arm is turning clockwise at w. The hydraulic pump is fixed to the arm. A disk at the end of the arm can turn around itself...

My plot didn't come out correctly, so I know I did it wrong. Where did I go wrong or was I even close? 1. Homework Statement The hydraulic car lift shown in Fig 1 will be used to lift a vehicle of weight W. Determine the force in the hydraulic actuator required support the vehicle as a...

Hello I need guidance on selection of a hydraulic motor. Motor would be used to drive the wheel of a vehicle. Motor needs to generate a torque of 18.3Nm in order to overcome static friction and move the vehicle. And the motor needs to be small enough to be coupled with the tire (see the picture)...

So her is my predicament. I plan to convert my car to a amphibious car. Don't be negative and judgemental about it but I need help to figure out how I should power it on water. I have a 1400 lbs car. It has a 67hp engine. What I'm thinking I want to do is have a sprocket/gear attached to my...

Hi, Any good and detailed book on hydraulics and hydraulic machines ? Much grateful Need to cover topics on Water Turbine, Flow through Pipes and Head Losses with detail derivations.

am currently designing a servo motors for a spillway gate for a dam , I have some doubts on how to determine the pushing force( the force needed to drop the spillway gate at a safe rate) for a piston carrying a heavy load of 275tons at a speed of 0.4447 m/min(this speed was pre-determined by me...

Homework Statement The hydraulic crane is used to lift the 1450-lb load. Determine the force in the hydraulic cylinder AB and the force in links AC and AD when the load is held in the position shown.Homework EquationsThe Attempt at a Solution I don't even know...

The title might be a bit confusing but I just want to know if you can recreate (partial) the system of refrigeration with hydraulic compression. So say, you have a container (cylindrical piston) filled with water, then you apply pressure. Will the water's temp increase? Then, will the...

I want to build a 1000 pound car for city driving with a 45 MPH limit. This totally something I want to do.just to say I can. But I'm a machinist with only basic engineering knowledge. My power plant will be a 16 HP OHV gas engine driving a 1800 psi pump coupled to a Bi-directional hydraulic...

At my shop we recently acquired an old 2-post automotive lift from the 70's. The lift has two cylinders, one for each post. The hydraulic lines were a bit hacked up when we got it and we're now in the process of trying to get it up and running again. We have it operational, but the arms are...

Hi all I am very much a layman when it comes to Thermal Hydraulics and this may be a naive questions but here it goes... On the job, i use various codes to examine two phase flow in the core loop. Despite being vetted and validated numerous times over the course of many years (TRAC, RELAP...

Rank in order from largest to smallest, the forces required to balance the the masses (in kgs) You can find the diagram and answer at this link on the third slide http://www.gwu.edu/~phy21bio/Presentations/PHYS1021-15a.pdf Equation P=F/A The Attempt at a Solution I'm really having trouble...

I was thinking about adding a pedal powered propeller to a kayak and I had an idea:Use a hydraulic pump/motor combo to simplify the design. That way I could have the pedals in front of me and easily route some hydraulic lines to a propeller in the back. I came across this gear driven...

Homework Statement In a hydraulic lever consisting of two ideal fluid lined cylinder/pistons with a fluid filled line coupling the two cylinders, the output force is 100 times the input force. For 1 Joule of work done on the input side, the work done on the output side is (in J):Homework...

hi i am looking for linear retractable hydraulic joint, basically it is hydraulic cylinder with hole in the rod, it does not perform any work, it does not resist the fluid flow, it just expands and retracts as needed, it acts as a hose but its cylinder based is there something like...

Im having an issue with a manual pump opening an actuator. It opens fine and holds pressure until the temperature starts to drop. My question is does anyone know of any hydraulic oil that is not susceptible to condensing when temperature drops?

Dear all, For a project I'm going to design a servo system that will output an amplified hydraulic pressure, whereas the input is a force or pressure as well (not per se hydraulic). Output and input must directly connected due to the force feedback. I don't have a lot of experience with...

Hello Everyone, I am interested in getting some feedback and opinions on a project I have designing a 4 wheel drive buggy. The application is pretty specific and i would like it to meet the following: - max speed 30-40kms/hr - weight 800kgs - mainly operates at 0-15kms/hr - only runs 5mins...

Can anyone recommend a company in the Cambridgeshire area that offer a full hydraulic service including bespoke design, supply, installation, testing and commissioning of hydraulic control systems and solutions and systems that have been used for standard and high risk applications including...

Homework Statement Piston 1 in the figure below has a diameter of 0.797 cm; piston 2 has a diameter of 4.32 cm. In the absence of friction, determine the force required on piston 1 necessary to support an object, m, with weight 983 N. (Neglect the height difference between the bottom of the...

Hi I am having difficulty explaining to my mechanical engineering supervisors the following: When a pumped storage unit is in generation mode, synchronised to the grid and in steady state and the guide vanes/wicket gates are opened more to allow more water flow and therefore more power...

Hi everyone, In the attached diagram there are two hydraulic systems. The cylinder areas for each system are the same. The only thing that is different between the two systems is the pipe joining them, system B having a much smaller ID. Pascals law states that these two systems would act...

Hi all, I need to model an hydraulic cylinder with simulink and to control it according to some rules. What I don't understand is to find a relationship between the flow rate and pressure inside it. Any suggestion is appreciated. Thanks

I'm trying to get my mind around counter-emf. Is there a good analogy for counter EMF in either hydrology or mechanical examples ? I've read the textbook descriptions. Likewise, I wonder if there are analogies for the phenomenon of Hysteresis.

I want to do some research on Hydraulic actuators, Hydraulic motors, etc. Anybody know of any good books on the subject? Thanks!

Hello, I'm trying to compare efficiency of different hydraulic motors by looking at unit of output per unit of input, viz: \frac{rpm × torque}{pressure × flow} I'm a bit flummoxed by one set of motor specs, for Eaton Duraforce motors, which is attached below. these motors seem to...

If an inert gas is used to force piston with a Pressure say P (Assume the volume of gas to be sufficiently large). I would like to know the following: (consider piston to be horizontal) 1) If say one puts a small volume of a hydraulic fluid in front of the piston. Keeping the same pressure of...

Hello there; I am having a conceptual problem with the hydraulic analogy (a collection of similarities between electrical circuits and piping systems). It specifically has to do with the topic of pressure and voltage drops. The hydraulic analogy claims that pressure drops act like voltage...