Dynamometer program on WWW

[Bruce Bowling]

With all of the talk lately of dynamometers, horsepower, etc, I
made an web application which determines engine horsepower from
vehicle MPH vs. time.  The URL is:

   http://devserve.cebaf.gov/~bowling/dyno.html

The calculation is based on the equation (posted earlier) relating
HP to MPH, weight, and acceleration.  All one has to do is use a
stopwatch to obtain time events to reach certain MPH's.  The acceleration is
obtained by using a cubic spline interpolant on the MPH vs. time, using
the derivative of the spline (could have used a forward or backward
differencing scheme, but the spline provides a piecewise-continuous
function which can be differentiated analytically).  The nice thing
about this application is that the horsepower figures are corrected to
standard conditions, allowing accurate comparisons to other corrected
hp figures (such as magazines, real dynos, future runs, etc).  

This program is reachable from the master auto programs list:

  http://devserve.cebaf.gov/~bowling/auto.html

- Bruce


--
-----------------------------------------------------
<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
-----------------------------------------------------
               Bruce A. Bowling
  Staff Scientist - Instrumentation and Controls
 The Continuous Electron Beam Accelerator Facility
    12000 Jefferson Ave - Newport News, VA 23602
                 (804) 249-7240
                bowling at cebaf.gov  
        http://devserve.cebaf.gov/~bowling
-----------------------------------------------------
<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
-----------------------------------------------------