Recent content by Jeviah

Thank you very much for the quick reply. One final question about how CFD works, am I correct in saying that when using surface goals, the surface goal will only record the torque applied to said surface by the fluid, opposed to including bodies attached to it? For example a surface goal on an...

Correct my low is in the z+ direction. It seems I have got incorrect information somewhere when asking about torque... So to clarify the torque value which determines the rotation and therefore power etc is the z component? So on any orientation you would take the torque value from the rotating...

Hello, I am using CFD to analyse a Kaplan turbine and am unsure on how to interpret the torque values as they come as x, y and z components. My understanding is that the z component in this case will determine the rotation direction depending on whether it is positive or negative however I am...

I understand, I am designing a controlled descent system, although I am unsure as to how to go about my calculations. I can calculate all linear and angular values, moment of inertia as well as the torque of the system for a given set of parameters. Then I could calculate the centrifugal force...

Homework Statement Hello, so I currently designing a centrifugal brake, I know how much torque it needs to stop etc just unsure of a few things. How would I calculate frictional torque? I understand that I can use the net torque to determine what torque is needed for equilibrium etc however I...

Sorry that was a poor description on my part. So my plan is to coil a spring around an axle/wheel essentially, one end attached to the axle/wheel the other end attached to a load that can be removed. The load pulls on the spring and the spring extends, when the load is removed the spring would...

Homework Statement If a spring is loaded with a mass, the spring being completely vertical and the mass hanging below it there would be an extension in the spring relative to the mass applied/force applied according to hookes law. If the same spring was not vertical but coiled (similar to a...

okay so I've copy and pasted all the info I am given from the brief below and bolded the statement I am unsure about.Based on the current trend of aircraft development, environmental factors such as noise and emission limits will play a more vital role in future transport aircraft design...

Homework Statement hello, i have been given a piece of homework which is determining the characteristics on an aerofoils boundary layer. In the brief the following statement is made with no context “Aerofoil is flying in chord Reynolds number 0.2x10^6” am i correct in saying that is the point...

Homework Statement hello, I'm currently studying simpsons rule (unrelated) however the method requires the answer to cos^2(1^2) the answer given by my tutor is 0.2919, I have been unable to get this answer after inputting cos in various ways I always get 0.9997, which is right and if 0.2919 is...

Thank you for the quick response i understand. I do have another question though, for the object not to move it has to be in equilibrium as you have said, if there are 3 points of contact with a surface, two on the right hand side and one of the left would the sum of friction force on the right...

Homework Statement If you have an object say in a vertical pipe, which only has a gravitational force acting on it would the reaction forces only be friction forces? If this is the case how would you calculate the forces? would you calculate the friction force using the friction coefficient or...

Homework Statement if a beam fixed at two points is on an angle say 45 degrees from the x or y-axis instead of running parallel to x-axis in most questions does this effect calculations? The force acting upon it would be a load directly downwardsHomework Equations N/A The Attempt at a Solution...

Homework Statement y(w)= 3/(iw-1)^2(-4+iw) Homework Equations N/A The Attempt at a Solution 3/(iw-1)^2(-4+iw) = A/iw-1 + B/(iw-1)^2 + C/-4+iw for B iw = 1 B=3/-4+1 = -1 for C iw = 4 C= 3/(4-1)^2 = 1/3 I know the answer for A should be -1/3 however I am unsure how to obtain this as if the...

Thank you i figured it out, although i have a problem with another question if you could possibly help out please 6/(2iw-3)^2(iw+1) I have split it and obtained B=12/5 and C=6/12 with the layout A/(2iw-3), +B/(2iw-3)^2, +C/(iw+1) cancelling them out of the original equation to obtain the...