On Thu, 11 May 2006, Gerhard Fiedler wrote:

> Russell McMahon wrote:
>
>>> the formula HP=(CD*Q*A*(V^3)*6.8)/10^6
>
>> It is interesting to compare that formula to my recently noted
>>
>>             Drag = 0.5 x Cd x Rho x A x V^2
>
> Now where did I write down the conversion factor between lbf*mph and hp? :)

plp@plp:~$ units
1378 units, 57 prefixes

You have: lbf*mph
You want: hp
         * 0.0026666667
         / 375

Peter
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