Glide ratio

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8263
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Glide ratio

Post by 8263 » Thu Oct 10, 2019 10:42 pm

Hello all. Could someone please tell me the glide ratio for a cessna 140? Thank you all.
Pat

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5806
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Re: Glide ratio

Post by 5806 » Fri Oct 11, 2019 7:15 am

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.
John

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Re: Glide ratio

Post by 8482 » Fri Oct 11, 2019 10:50 am

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.

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Rob Swanland
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Re: Glide ratio

Post by Rob Swanland » Fri Oct 11, 2019 12:03 pm

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.

8263
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Name: Patrick G
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Re: Glide ratio

Post by 8263 » Fri Oct 11, 2019 12:22 pm

Yes it is for foreflight. 7:1 it is. Thanks for the response guys
Pat🤙

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