Recent content by eqm

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    Determining the sign of control derivatives

    I'm having quite a deal of trouble trying to figure this out. Say, for example, you wanted to have a statically stable aircraft. How do you determine what the signs (positive or negative) of the control derivates need to be for this condition to be satisfied ( CXα, CZα, Cmα, Cmq, CZδe, etc) ?
    • eqm
    • Thread
    • Aircraft Control Derivatives Dynamics Flight Sign System
    • Replies: 1
    • Forum: Aerospace Engineering
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    What Is the Maximum Velocity of a RWD Vehicle on a 6% Grade?

    Homework Statement Determine the maximum velocity attainable by a vehicle with the following conditions: RWD 6% grade Weight = 20 kN CG is 1.25 m behind front axle and 0.5 m above ground level. Wheel base is 2.8 m. Effective rolling radius of wheel = 30 cm Coefficient of aerodynamic drag =...
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    Calculate Max Velocity for RWD Vehicle on 6% Grade | Homework Problem

    Homework Statement Determine the maximum velocity attainable by a vehicle with the following conditions: RWD 6% grade Weight = 20 kN CG is 1.25 m behind front axle and 0.5 m above ground level. Wheel base is 2.8 m. Effective rolling radius of wheel = 30 cm Coefficient of aerodynamic drag =...
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    Undergrad Generation of Static Electricity

    I was wondering if and/or how one would could calculate the the generation of static electricity between 2 materials. For example material A is immersed in substance B and moves within it at a constant velocity. Knowing the velocity and volume / surface area of material A and the electron...
    • eqm
    • Thread
    • Electricity Generation Static Static electricity
    • Replies: 1
    • Forum: Electromagnetism
  5. E

    Graduate Find a General Function for a Periodic Curve with Symmetry and Infinite Decay"

    That's what I thought, sorry :/
  6. E

    Graduate Find a General Function for a Periodic Curve with Symmetry and Infinite Decay"

    Didn't realize the picture would be huge... Sorry!
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    Graduate Find a General Function for a Periodic Curve with Symmetry and Infinite Decay"

    Hi! This is my first ever post on PF. Thanks in advance for anyone who helps me out on this! I'm trying to find a general function that describes the curve in the attached image. As you can see, it is periodic and decays as it approaches infinity. y ≥ 0 at all times; f(0)=0; symmetric about y...