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DA40NG GLIDE SPEED
Posted: Wed Nov 14, 2018 3:22 pm
by Niwla93
Now for the PFL (practiced force landings) or any other emergency drill on the DA40NG, the glide speed based on AFM is 88kts. Understood and clear.
However during the approach, if we apply Take off flaps or landing flaps, will the speed still be the same (88kts)? Or should it be differnt ?
Thank you, gday.
Alwin
Re: DA40NG GLIDE SPEED
Posted: Fri Nov 23, 2018 12:17 pm
by helidoc67
Airspeed for best glide angle (Flaps UP) 88 KIAS
Airspeed for
Emergency landing with engine off
Flaps UP 83 KIAS
Flaps T/O 78 KIAS
Flaps LDG 77 KIAS
Venk This info is from my 2011 40NG 116
Re: DA40NG GLIDE SPEED
Posted: Mon Nov 26, 2018 7:03 pm
by astaib
Hello,
I’m doing the set up of Foreflight for my da40 and I know what to input for the best glide speed according to this:
But I don’t know what to input for the best glide ratio.
Where can I found this value or calculate it?
Thanks!
Arnaud.
Re: DA40NG GLIDE SPEED
Posted: Mon Nov 26, 2018 7:24 pm
by Pehu
Best glide is 88kts. No flaps. Thats from AFM.
Re: DA40NG GLIDE SPEED
Posted: Mon Nov 26, 2018 7:26 pm
by astaib
Ok. But what is the ratio?
Re: DA40NG GLIDE SPEED
Posted: Mon Nov 26, 2018 7:29 pm
by blsewardjr
Best glide ratio for the DA40-180 is 8.8 with propeller windmilling and 10.3 with it stopped. See note to Section 3.4 in the AFM. I use 8.8 for my Foreflight.
Re: DA40NG GLIDE SPEED
Posted: Mon Nov 26, 2018 7:31 pm
by astaib
Thanks.
Why are talking about 88 knots when I read values between 60 and 76?
Ok for 8.8 for the ratio
Re: DA40NG GLIDE SPEED
Posted: Mon Nov 26, 2018 7:45 pm
by AndrewM
Arnaud,
The 88kts is for the NG version of the DA40.
Re: DA40NG GLIDE SPEED
Posted: Mon Nov 26, 2018 7:46 pm
by astaib
Ok. So 8.8 for ratio is also for the ng.
Re: DA40NG GLIDE SPEED
Posted: Wed Dec 19, 2018 3:01 pm
by Niwla93
The ratio should 1000ft to 1.54Nm on clean config, with glide speed of 88kts. However I think the speed changes with flaps, as mentioned above. Thank you all for your inputs