Guys,
A few numbers from my mono 914
MAP = 29
RPM = 5050
OAT = 12 c
Alt = 3400' @ 29.92
I get 136 knots calcuated as follows:
VTAS = SQRT( V1sqr + V2sqr + V3sqr + V1sqr * V3sqr / V2sqr ) / 2
V1 first leg
V2 perpendicular to first
V3 parallel to first in opposite direction
100% power is 5500 @ 34" so I think the above numbers are close to 75%
Fuel burn at 75% is 5.4 US Gallons / hour, 100% is 7.2 gallons per hour.
If I ran at 5500 @ 34" I got 154 knots at the same OAT/Alt. If my maths is
wrong I am happy to be corrected. I think its pretty close, I file IFR @
8000' for 140 knots and it generally turns out that way.
Cheers, Paul
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