Best Glide Demonstration: The Effect of Propeller Speed

Learn from Tom Turner as he quantifies the effect of propeller control on engine-out Best Glide performance.
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[@friar196]

Concise, effective, easy-to-remember demonstration. Good work; thanks Tom.

[@charlestex8222]

Keep up the good work.

[@donjones1203]

Interesting demonstration! Thanks

[@aviatortrevor]

If you've lost oil pressure though, won't the prop be stuck in fine-pitch no matter how you move the blue knob?

[@AmericanBonanzaSociety]

Yes, it’s which case you’d be stuck with the much steeper rate and angle of descent with nothing you could do about it. -Tom

[@keithmashton]

Amazing video. Thanks. Question: how did you get your gear up with the throttle to idle - doesn’t it have to be at a position around 17”+ for the gear to go up?

[@AmericanBonanzaSociety]

The throttle interrupt to landing gear retraction was not introduced until later models. The ABS/ASF A36 is a 1981 model and does not have this feature. - Tom

[@kentfarneytomsawyer7711]

The engine at idle is still producing thrust and especially with prop in course mode. For an accurate assessment the engine should be off (ie mags off and/or fuel off). See what the real rate of decent with a bonafide engine failure.

[@wwm0611]

It is always eye opening the difference it makes - question - having done this in a B36TC and a V35B - the 35 responds much like this video - the 36 less dramatic- is there an impact with a turbo engine somehow?

[@AmericanBonanzaSociety]

I think it’s more a matter of airplane weight, perhaps also affected by the CG. -Tom

[@stephenalexander6033]

I had loss of engine oil pressure.

[@stephenalexander6033]

And I tried to stop the engine without success-decided to maintain whatever power I could with what turned out to be a thrown #4 rod.