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  1. SmithSMC

    High Lift non flapped airfoil wanted

    I did my senior thesis on this topic while I was an undergrad. The application was an inverted wing located at the front of the vehicle. What I found using CFD software was that a high camber wing (NACA 7220,etc) would be the most efficient, which was pretty much expected. Also, ground effect...
  2. SmithSMC

    Majoring in Automotive Engineering?

    Try the schools around Detroit (Umich-Dearborn, Lawrence Tech, U-D/Mercy). I know that Umich-Dbn has a masters in automotive systems program, but it requires a bachelors in Mech Eng.
  3. SmithSMC

    Formula for peak piston acceleration at top/bottom of stroke?

    Jim, The instantaneous speed of the piston at a given crank angle (q)is as follows: Sp=pi/2*sin(q)[1+cos(q)/((R^2-sin^2(q))^.5)*ave. piston speed. (R is the ratio of con. rod length to crank radius) If you know the speed of the engine, you can calculate the time required to slow the piston...
  4. SmithSMC

    Equivalence ratio vs throttle position

    Ivymike, From an overall emmissions standpoint, it is desireable to keep your equivalence ratio as close to 1 as possible, which is what most modern engines attempt to achieve throughout the operating range (exception being WOT where richer mix is req). By making the mixture more rich (or very...

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