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Best Glide Speed

Unread postPosted: 26 Sep 2011, 00:22
by tangoshadow
Hi,

I was wondering - I know that for landing you target around 11 or 13 degrees AoA, but wondered about two other parameters: best rate of climb and best glide speed/AoA??

Best regards,
TangoShadow.

RE: Best Glide Speed

Unread postPosted: 26 Sep 2011, 04:31
by deadseal
depends on weight and drag. very large range for both

Unread postPosted: 26 Sep 2011, 20:53
by LinkF16SimDude
As I recall, if HOME mode is used, HAL figured out the apex altitude and glide speed based on your particular situation and which steerpoint was selected for HOME.

Unread postPosted: 27 Sep 2011, 15:51
by guy@rdaf.dk
Best engine out glide AOA is around 7 AOA regardless of weight. Not sure about the AOA for best climb rate since it depends on lots of other parameters, but it will be well below the 7 AOA. Usually we talk about climb speed in either KIAS or Mach number, and not climb AOA. Factors such as distance vs altitude, time vs altitude and more will determine what speed to climb with.

Unread postPosted: 28 Sep 2011, 13:46
by tangoshadow
Usually we talk about climb speed in either KIAS or Mach number, and not climb AOA. Factors such as distance vs altitude, time vs altitude and more will determine what speed to climb with.

Is this information publicly available?

Best engine out glide AOA is around 7 AOA regardless of weight.

Great! Thanks.

Best regards,
TangoShadow.

Unread postPosted: 28 Sep 2011, 20:09
by guy@rdaf.dk
The climb info sheets are in the Dash 1-1. Don't know if its publicly available.

Unread postPosted: 29 Sep 2011, 00:13
by Roscoe
Climbs are performed at the speed with the greatest excess thrust, i.e. the greatest difference between thrust and drag. For fast movers this tends to be 350-400 KCAS until approx 0.8M is reached then hold Mach. This is usually independent of weight or load out...or independent enough to not sweat the differences.

Re:

Unread postPosted: 05 Apr 2021, 15:14
by saberrider
guy@rdaf.dk wrote:Best engine out glide AOA is around 7 AOA regardless of weight. Not sure about the AOA for best climb rate since it depends on lots of other parameters, but it will be well below the 7 AOA. Usually we talk about climb speed in either KIAS or Mach number, and not climb AOA. Factors such as distance vs altitude, time vs altitude and more will determine what speed to climb with.
Questions :but the glide slope angle?

Re: Best Glide Speed

Unread postPosted: 09 Apr 2021, 14:04
by Patriot
Take a look at this. The oil pressure went to 0, the pilot gained the altitude regardless and then shut down the engine as it started to smoke fearing of breaking up the fire I guess. Then the aircraft comfortably went to a glide-descent mode in around 250kts indicated. Perfectly executed dead stick landing...!

Question. Why the AOA staple symbology didn't popped out as the gear handle went down as it normally happenes I think...??

:arrow: https://youtu.be/ILxzJAcq1Mc