Light-Sport Aircraft Yahoo group Pipistrel ALPHA Trainer fuel flow

> Posted by: "Michael Coates" mcoates@mcp.com.au
>
> guys, I'm really starting to become worried about the ongoing
> communication and the fact that nobody ever bothers to look at the
> information presented.
>
> Please allow me to spell it out for you directly from the manual and
> give you an explanation on fuel consumption.
>
> fuel flow at cruise speed 108 knots 3.6 US gph (13.6 l/h)
> fuel flow in circuits 2.5g US gph (9.5 l/h)
>
> These details are clearly listed on the website and in the information
> pack and in the flight manual and a real figures. The fuel flow in
> circuits based on my experience is closer to 8.5 litres per hour
> instead of 9.5 litres per hour. It must be remembered that the
> Pipistrel ALPHA Trainer is extremely clean, it has no wing struts, no
> rivets nothing else in the air stream which can slow the aircraft down
> by creating drag. This design is based on a glider and pretty much the
> whole circuit from mid downwind is performed with the engine at idle so
> even though you are using full power for take off and climb to 1000
> feet AGL the moment you are on mid downwind the rest of the circuit is
> with the engine at idle, with the engine at idle and at neutral flap
> the aircraft has a glide ratio of around 20 to 1 so it is easy to see
> that the aircraft can achieve and does achieve the quoted fuel flow
> figures.
>
> Can we now please put this issue to bed.... many thanks Michael


Sure we can Michael,
but only after complimenting you on 108 knots at 3.6 US-Gals/hour.
Excellent!


Mike




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