Landing procedure for F-15 AFM

[NineLine]

I just put holes in the run way with a fully loaded F-15 :)

[_Dredd]

I just put holes in the run way with a fully loaded F-15 :)

 

Haha, good practice huh :) .. Or did I read that as an attack run :)

Makes you appreciate the new flight model so much more.

Edited May 2, 2014 by _Dredd

[NineLine]

Yup, after a few heavy landings (controlled crashes) landing a light aircraft was a breeze :)

[_Dredd]

Yup, after a few heavy landings (controlled crashes) landing a light aircraft was a breeze :)

 

:)

 

Yuh, :pilotfly:

[Vortex225]

I just put holes in the run way with a fully loaded F-15 :)

 

 

Here's are two tracks of heavy landings (i.e. full fuel/weapon load) with the F-15C at Batumi. :thumbup:

heavy_landing.trk

heavy_landing_2.trk

Edited May 2, 2014 by Echo225

[GGTharos]

I only watched the first one.

 

This is a good example why you don't do such landings. For one, you're sitting in the hot brakes area, and two, if it had been a wet runway, you'd have overrun it. If your brakes failed, same. If you needed cables, they would probably break.

 

That of course is a matter of safety and planning, not of showing off landing skills ;)

[Vortex225]

I only watched the first one.

 

This is a good example why you don't do such landings. For one, you're sitting in the hot brakes area, and two, if it had been a wet runway, you'd have overrun it. If your brakes failed, same. If you needed cables, they would probably break.

 

That of course is a matter of safety and planning, not of showing off landing skills ;)

 

I'm certainly not claiming that one should land heavy on such a short field. Your risk assessments above are all accurate. I'm just attempting to demonstrate sound AoA landing techniques; when done properly, they allow you to make landings that would be otherwise impossible (e.g. a heavy Batumi landing). Operational risk management would, of course, discourage such attempts. However, it's fun to test one's skills in a forgiving virtual environment. IMHO, attempting things that you wouldn't or couldn't do IRL is a small but non-trivial part of what a virtual flying experience is all about.

 

BL: Set your AoA and trim to that value. Adjust power to acquire the glide slope and place the flight path marker where you want it. Profit. :pilotfly:

Edited May 2, 2014 by Echo225

[GGTharos]

I know you're not claiming that. Just pointing out those particular considerations :)

[Vortex225]

I know you're not claiming that. Just pointing out those particular considerations :)

 

No worries. :thumbup:

[Ryback]

Guys,

 

Can you just have a look and tell what am i doing wrong here? I come with 10 degress/20 aoa 150-180 knots and still i damage the landing gear-they look like my grandma's legs after the landing

 

fail-landing.trk

[159th_Viper]

Guys,

 

Can you just have a look and tell what am i doing wrong here? I come with 10 degress/20 aoa 150-180 knots and still i damage the landing gear-they look like my grandma's legs after the landing

 

[ATTACH]97797[/ATTACH]

 

I'm no budgie-pilot but you're coming in at 43000 pounds gross with a descent-rate of over 1000ft per minute till squat: You're guaranteed to buckle something like that I would have thought.

[GGTharos]

Yep. Design limit is for 600fpm at 36000lbs IIRC - not that it can't take more, but that's the value you should not be exceeding.

[Buzpilot]

Guys,

 

Can you just have a look and tell what am i doing wrong here? I come with 10 degress/20 aoa 150-180 knots and still i damage the landing gear-they look like my grandma's legs after the landing

 

[ATTACH]97797[/ATTACH]

 

You can go as slow as 155-150 with full tank landing.

The trick is to flare to horizon 3-5 sec before touchdown, to slow down vertical speed.

fail-landing 01.trk

Edited May 8, 2014 by Buzpilot

[Ryback]

Thank you guys.. I thought 1000 ft will be enough.So i shouldn't exceed 600..

 

Buzpilot didn't watch it yet but thanks for the track!

[Vortex225]

You can go as slow as 155-150 with full tank landing.

The trick is to flare to horizon 5-10sec before touchdown, to slow down vertical speed.

 

Be careful with that flare in the last few seconds before landing. If your AoA is near 22 units, a flare could actually cause more harm than good (i.e. the increase in drag will overwhelm the increase in lift coefficient initiated by the larger AoA).

 

I think it's wise to consider an increase in power first, which for a constant AoA will lift your FPM in a safe and controlled manner and reduce your rate of descent, followed by a very delicate flare as you decrease power to idle.

 

Unfortunately, these final moment during a landing are hard to master without lots of practice. Much of it depends on subjective cues you receive from your eyes regarding perceived rate of descent and your height above the ground. Many folks will recommend that you focus outside of the cockpit in the final moments before touchdown, as it's easy to get lost in your instruments during transition.

Edited May 5, 2014 by Echo225

[joey45]

I fyou have a lot of fuel left I suggest you dump or burn it before landing.

[Vortex225]

You can go as slow as 155-150 with full tank landing.

The trick is to flare to horizon 5-10sec before touchdown, to slow down vertical speed.

 

I just watched Buzpilot's track too. While the transition was gentle (nice work), there were some things I would recommend other players avoid.

 

First, there is nothing to be gained by keeping your landing gear up while on final approach. Instead of using your air brake, drop the gear much sooner and keep that brake retracted until transition/touchdown.

 

Next, I don't recommend your AoA attack exceed 22 units. Above that value, your FPM will fall below your HUD (as indicated with a flashing circle). Also, it's wise to trim your aircraft to the desired AoA (i.e. 20-22 units) so you don't have to fight the pitch-balance of the aircraft on final. To this end, a properly trimmed aircraft will only require throttle work to find and maintain the glide slope vis-a-vis "power for altitude."

 

Finally, don't worry about your speed. Focusing on AoA will take care of your speed concerns. Higher AoA will allow a lower landing speed, which is useful for heavy landings, but again 22 AoA units should be your max.

 

Feel free to check out two of my heavy landings at Batumi here.

Edited May 5, 2014 by Echo225

[GGTharos]

No, the design limit is 600 fpm for a 36000lbs aircraft.

 

If you're heavier, the limit is correspondingly lower.

 

There's no reason for you to not strive to have a 200fpm or less touch-down every time.

 

Exact landing technique also depends on the landing weight - eg. with a heavy aircraft you might pull power in the flare instead of before the flare.

 

Thank you guys.. I thought 1000 ft will be enough.So i shouldn't exceed 600..

 

Buzpilot didn't watch it yet but thanks for the track!

[Vampyr]

After doing about 30 practice landings with a full tank on a short runway, I think I've finally got the hang of it. Before the new AFM, I never felt the need to use flaps or pay any attention to my weight or speed, but that's all changed now.

 

Check out the attached track. It's only around 4.5 minutes long.

afm_f15c_landing.trk

[SharpeXB]

After doing about 30 practice landings with a full tank on a short runway, I think I've finally got the hang of it. Before the new AFM, I never felt the need to use flaps or pay any attention to my weight or speed, but that's all changed now.

 

Check out the attached track. It's only around 4.5 minutes long.

Nice landing. I notice you didn't need to be at the AoA of 20-22

I can't figure out the AoA myself although I can land like you did at an AoA of about 10.

If I'm at 20 I'm either plummeting into the ground way too fast or flying belly first through the air and striking the tail on the ground.

[wingshigh.g]

Hi everyone, I don't know if I missed anything, but when I land, I extended the landing gear (of course), but when I approach the airport, the ILS still says GSUP when I have the gears actually down. The cross steering index stays as a cross, not the "bars". Can anyone let me know what I missed here?

 

Also, the lower left of the HUD always says "10 90", I thought it is supposed to say the G force?

 

Thanks.

[Buckeye]

Hi everyone, I don't know if I missed anything, but when I land, I extended the landing gear (of course), but when I approach the airport, the ILS still says GSUP when I have the gears actually down. The cross steering index stays as a cross, not the "bars". Can anyone let me know what I missed here?

 

Also, the lower left of the HUD always says "10 90", I thought it is supposed to say the G force?

 

Thanks.

 

 

GS = glide slope, you need to approach from

a bit higher.

[wingshigh.g]

Thanks Aceof Harts. The manual I got from FC3 says "When the landing gear is retracted, the GSUP index is shown. When the landing gear is extended, GDWN index is shown." You mean it meant something different?

[jgrimshaw01]

I can't watch any of the .trk files, it loads up and things are fine then the plane just crashes in to the sea DCS ver 1.5.2.49392. I was hoping that by watching someone else's landing I could get a better idea how to do it, the manual is not much use.

 

Any help would be appreciated

 

John Reaper Grimshaw

[Rangi]

I can't watch any of the .trk files, it loads up and things are fine then the plane just crashes in to the sea DCS ver 1.5.2.49392. I was hoping that by watching someone else's landing I could get a better idea how to do it, the manual is not much use.

 

Any help would be appreciated

 

John Reaper Grimshaw

 

Seeing as this thread is a couple of years old the tracks would have been made on an older version of DCS. You are probably better off looking for some you tube videos, there are some great tutorials on there.