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Glide ratio

Posted: Thu Oct 10, 2019 10:42 pm
by 8263
Hello all. Could someone please tell me the glide ratio for a cessna 140? Thank you all.
Pat

Re: Glide ratio

Posted: Fri Oct 11, 2019 7:15 am
by 5806
I have heard... a little better than 7:1.

Semi-related to the subject, it varies under different weight loadings but in my airplane about 1600 rpm the "glide ratio" is similar to a low performance sailplane. Circling in thermals can actually produce a climb on a good day.

Re: Glide ratio

Posted: Fri Oct 11, 2019 10:50 am
by 8482
I'm guessing you are wanting this for Foreflight? I use 7. I hope that is a conservative number if I ever needed to rely on it. But yeah, loading and environmental factors can affect that number as previously stated.

Re: Glide ratio

Posted: Fri Oct 11, 2019 12:03 pm
by Rob Swanland
Yes, 7:1 is very conservative but better to be on the safe side. Lightly loaded you should be able to achieve 10:1, maybe more if the prop is not windmilling.

Re: Glide ratio

Posted: Fri Oct 11, 2019 12:22 pm
by 8263
Yes it is for foreflight. 7:1 it is. Thanks for the response guys
Pat🤙