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Speed,Combat,Scale,Racing => Combat => Topic started by: Peter Germann on October 15, 2018, 07:15:59 AM
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When flying an F2B inside square looping with a combat or F2B model:
- 1/8 lap wide
45° lines elevation angle high
what is the tightest turns radius the model can fly?
Thanks for info, Peter Germann (F2B)
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Peter, an F2D plane can turn around a 1.8m(6ft) continuous loops. Hardly anyone does that in competition so is around 1.5m(5ft) radius in stretched out figure eights,
For F2B
Peter, the numbers I get are for a nominal 20.75m line lenght(68ft) and a nominal 3.7m(12ft) turn diameter are:
Flight circle= 130.25m(68ft)
The bottom side and the vertical sides are 16.3m
The flat side length is 8.9m(29.2ft)
The 45deg flight circle is nominally 92.1m, the loop width is 11.5m(37.75ft.) including the turns.
The level flight length is 4.1m(13.5ft).
A 3.7m turn radius is extremely good. A more realistic figure is 4m, or even 4.5m.
This leaves unsaid what 45deg. means. Is it a latitude(level flight) or a great circle path. The great circle path looks straight to the pilot. The difference between latitude and great circle paths in 4+meters may not even be noticeable in only a few meters.
Thanks for doing a difficult job.
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Thank you Phil.
I will include your findings in a new topic “Corner radius and Cosequences” on the Forum in near future.
rgds, Peter G.