Recent content by rc flyer uk

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    MATLAB Inputting Transfer Functions in MATLAB - Rob's Guide

    I have only basic MATLAB skills and need to input to transfer functions into MATLAB to determine a closed loop transfer function! But cannot find any simple books or guides to show me how to input the functions! One of the transfer functions i wish to input is: G(p)=1/s(1+0.8+0.04s^2) Some...
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    MATLAB Solving for T3is in Matlab: Tips for Using XCount and Other Functions

    I need some help with matlab! not sure which function to use! I think i should use xcount ycount so i can do it but i shall explain the problem! I have input some variables into matlab p2=1e5 t2=288 p3=[2e5:1e4:10e5] y=1.4 and now i wish to work out t3is which should be...
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    How to Connect a Motor to MK111 Timer Relay Terminals J2?

    I hae built a MK111 variable interval timer http://www.maplin.co.uk/Module.aspx?ModuleNo=25224&criteria=TIMER%20KITS&doy=6m1" and intend to use it for a free-flight glider which is a university project! I wish for the timer to power an electric motor for 2sec and then pause for a desired...
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    Propulsion System Design: Calculating Engine Inlet Area

    Thanks for your help. Having looked back over what i was doing and being more awake, and after recovering from the new year! I have realized that when i said the first thing i need to work out is the inlet area, what i actually needed to be doing was using a number of estimated values for the...
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    Propulsion System Design: Calculating Engine Inlet Area

    Propulsion system! I am writing a report designing a propulsion system, ie a turbine to power an apu, and have various requirements such as a power demand for the apu of 400kW so the turbo-jet needs to have 421.05kN of power. i have various other information regarding the effiency's of the...
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    Solving the Lift Coefficient for Wind Tunnel Test on NACA 23012 Aerofoil

    Not quite sure to be honest! I would imagine it probally is per mm of water per second! As for surface area would this be the surface area of the fan ie where the 75mm water/second is coming from?? Is it possible to do it this way as well! 1/2 ρ Vw²= Pe-Pw/1-(Aw/Ae)² (the dynamic...
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    Solving the Lift Coefficient for Wind Tunnel Test on NACA 23012 Aerofoil

    Ok i have a feeling i have identifed the error! I beleve that the problem is that Vw needs to be in m/s. Does anybody know how it is possible to convert 75mm/water in m/s?? Rob
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    Solving the Lift Coefficient for Wind Tunnel Test on NACA 23012 Aerofoil

    I completed a wind tunnel test on a NACA 23012 aerofoil last week and am now writing a report on my findings! I need some help with working out the lift Coefficient as i seem to be going wrong somewhere. Cl= L/.5 ρ Vw² S To find the lift force i am subtracting the lift force which was...
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    How Do I Solve a Translational Equilibrium Problem in Aerospace Engineering?

    Thanks a lot guys managed to complete the question and got it handed in on time! Much apreciated! Rob
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    How Do I Solve a Translational Equilibrium Problem in Aerospace Engineering?

    I started my aerospace enginnering degree this year but have missed the first 7 weeks of lectures due to being in hospital, i was sent all lecture notes but am strugling with my mech module. I have my first assignment questions due in this week and am having dificulty thought you guys might be...
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    How to read Thermodynamic property tables?

    I can't remember for the life of me how to read Themodynamic property tables! I want to find answers to questions for example: What is the internal energy of 1kg of saturated steam at 10 bar or 3kg of water at 130C Can anyone help or know of any good websites which has information on how...
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