Recent content by socrates_1

Thank you for your reply.I know that I want a job related in thermo-fluid mechanics.Either in aeronautics and aerodynamics or in the oil and gas industry.However, I am not really sure that I will find the job I want(like everyone). If I do my masters on something specifc, when applying for other...

Thank you for your reply.What you just said is completely correct.I confirmed it through an explanation on a website about the aerodynamics of a wind turbine. Here is the section of the article which confirms your description: Twist The closer to the tip of the blade you get, the faster the...

Hi guys, in gas turbines, the blades of the turbine are twisted.I have searched it and as far I understand it has to do with the angle of attack,as the blade has the shape of an aerofoil.Does anyone know why are they twisted? Why they could not just have an angle without been twisted? I would...

Hi,I am studying mechanical engineering and I am going to apply for my masters in a few months.However, I am wondering if I should do my masters in Advanced Mechanical Engineering or in Fluid mechanics & Power Cycles. What do you think?If I do my masters in something more specific, is this...

Transfer function of Mass-Damper-Spring,connected through linkages Hi guys,I have posted a picture of the system I am trying to model in order to obtain its transfer function. My question is: Do the linkages affect the modelling of the system and should I take them into account?Also, is X1 the...

Homework Statement Hi,can someone explain to me through real world examples what the unit step and unit impulse means in systems control?How are they related to the system's input? Thank you.Homework Equations δ(t) = unit umpulse u(t) = unit stepThe Attempt at a Solution

Hi,I am trying to find out how to decide the direction of moment (clockwise or anticlockwise) for a fixed end beam (for example). As far as I know the direction is towards the side of the beam which is compressed. The link below shows some examples with directions of moments. Can someone...

Some example jobs are: Lecturers, Researchers in Industry (ie Product and Gample hires many researchers), Advisors in Engineering Industry (ie Atkins), quite many positions for researchers working with the government in United Emirates (Oil Industry).

Thank you very much for your response 'Studiot'. I refer to tensile strength.I know this relation with the factor of safety,but I just have the Lewis factor and premissible stress of the gear,and the calculator for maximum load through Lewis equation requires the tensile strength.I don't have...

Hi, I am trying to find out if permissible stress and tensile are the same.If not,what is their relation?Thank you.

Thank you very much for your response.The probability density function is given by : f(x)= 24/x^3 When I try to calculate ∫ (x^2) f(x) - (m^2) is undefined.Why this is so?

Hi, I just solved a probability density function problem and the standard deviation is undefined.Does anyone know why it happens?It would help to develop my understanding.Thanks.

Hi, I have tried to calculate 200C65 on my calculator but the calculator gives an error. Do u know how to do it? I also tried to calculate it through the formula with the ! but doesn't give an answer.

any ideas??

hi, does anyone know how to find how much axial pre-compression is required so that buckling will occur after a temperature rise of 50 C°? I know the cross section of the pinned at each end copper strip (4mm x 8mm) length= 100mm E= 100 GN/m^2 Coefficient of thermal expansion is 18 x 10^-6