On Tue, 17 Jun 2008 17:42:39 -0700 (PDT), More_Flaps
wrote:

On Jun 17, 10:10*pm, Stealth Pilot
wrote:
On Mon, 16 Jun 2008 19:04:49 -0700 (PDT), More_Flaps





wrote:
On Jun 17, 12:11*am, Stealth Pilot
wrote:
The tank dipped a reassuring 26 litres beside the clubhouse and it was
in for a goffer.
3 hours 28 minutes went into the log book that day for a flight to
Perenjori and back averaging 20.2 litres per hour at 122 knots
indicated.

not a bad afternoon's trundle If I do say so myself.
98 litres of high octane avgas was all it took.

I'm puzzled, how do you figure 98 lters with a consumption of 20.2/hr
fot 3.5 hours? Also did you log time on the ground or was your plan
way out?

Cheers

thanks for that! I diddled myself out of an hour in the logbook.

the figures were figurative, some were beer blured :-)

work it out yourself as an exercise.

88 litres consumption.
depart 12:05, arrive 14:13
depart 14:42 land back at 16:15

home to northam 62nautical
goomalling 23 nautical
dallwallinu 65 nautical
perenjori 50 nautical

return was direct northam 135 nautical
*then home.

you can have a beer out of your fridge if you work out the answer :-)


Thanks the beer was welcome.

Cheers

what figures did you get?

I reworked the calcs on a spreadsheet today.
they seem to be quite sensitive to rounding off of times.
23.89 litres per hour was my consumption by the numbers I recorded.
when I worked it out on the whizz wheel at the time with some rounding
of times I got 20.2 litres per hour.

I cruise at 222km/hour with the fuel efficiency of a petrol vw beetle.
I think about 24 and a bit miles per imperial gallon.

the guy who flew my aircraft for the first 18 years of its life used
20 litres per hour as his planning figure.
just goes to show that you dont have to be correct to be competent.
you just need to make sure you dont run out of fuel.
Stealth Pilot