tires popping on takeoff under max. takeoff weight... (SOLVED)

[D4n]

On Persian Gulf, multiplayer, Kasab airbase. Load: 99% fuel, 2x AIM-9M, 2 Mavericks G, most inner stations dual packs of GBU-16. thats just a few kilogram below max. takeoff weight. and STILL, at around 180-200 knots (takoff speed, even with 60° nozzles hard to take off), BAM, tires pop.

[tea_cypher]

you should be able to rotate to take off at 150 with that load out with no problem, are you flaps set to stovl?

[D4n]

Won't I get tailstrike then?? There is that huuuge grey metal part below the tail of AV-8B for some reason, and it'll touch ground, get damaged and maybe make me explode then I fear?

[D4n]

And no, flaps set to default (whatever value that is with auto-start procedure, maybe cruise or auto).

[Esac_mirmidon]

Please DanielNL.

 

Take the time and effort needed first in reading the manual, before posting a bug.

 

 

Take a look also at the STO procedure, nozzles rotation and flaps for STO.

[D4n]

Please DanielNL.

 

Take the time and effort needed first in reading the manual, before posting a bug.

 

problem, not bug... ;) "Problems AND bugs" xD

 

And you DO know how huuuuge the manual is, right? Thanks for the excerpt of manual though, I will try other flaps setting and earlier nozzle change to 60° next time.

Edited October 3, 2018 by DanielNL

[Esac_mirmidon]

You dont need the full Natops pack to know how a take off should be done. The Pocket Guide is more tan enough with a manageable page size.

 

Reading it will help you immensely

[D4n]

But I only forgot about the flaps setting, that was all xD (and I STILL wonder what that huuuge thing below the tail is)

[Esac_mirmidon]

Airbrake.

 

At take off and landing is deployed automatically with the LIDS on the opposite side to increase lifting. Is like a lifting box with four sides

[D4n]

"LIDS" ?

 

 

Esac I think u'r wrong there, yellow is airbrake, but what I wonder about is the thing in the RED box...

 

 

[Esac_mirmidon]

Is a ventral fin. It helps the aircraft with stability in yaw and increasing the surface area. The ventral fin allows the aircraft to operate at higher AoA. And dont worry, you are not going to hit the strip with a correct take off.

[D4n]

ah alright!

[tea_cypher]

When i said rotate i meant rotating the nozzels, flaps to stovl 60° rotate at 150 normally does in most situations, actally 120 is entirely practical alot of the time also

[Nealius]

Since no one else mentioned it, the Harrier IRL is not supposed to exceed 180kts on the runway or it will blow tires.

[Esac_mirmidon]

No one?

 

Please check #5 post.

[D4n]

Ha, ninjad xD nice

[Nealius]

Oh, all I saw was a massive chart of airspeeds when I read through the thread. Didn't notice the incredibly tiny text at the bottom of the image until now. Yeah, really easy to read or find with Ctrl+F </s>

[D4n]

No problem ;) DCS community best community!

[TheKardinal]

Hi,

 

You helped me set up my BlueFlag yesterday, so maybe I can help you today.

 

I am not sure if all of this is in the manual, which I have read a while ago, but for me I set my flaps to STOVL and set my water switch to ‘takeoff’ to give you a bit more power. Nozzles at zero -10 degrees for good acceleration. I commence the takeoff roll with power set just before the ‘hexagon’ begins to build to protect my engine. At about 100knots set nozzles to 45-50 degrees and once they are set wait for airspeed to build enough for the jet to takeoff with very little need for back pressure on stick. I tend not to put nozzles beyond those angles as once you get to 60 I find that there is too much vertical lift and not enough horizontal thrust...I want to get air over the wing by accelerating fast...60 degrees nozzle or more affects acceleration quite a bit. (I can talk more about the 1 in 60 rule here, which is good for these type of calculations involving angles)Once airborne, build speed to 200 as I put gear up...once passing about 150kts flaps to auto and nozzles can go fully aft at 200. Then flaps to cruise for a bit more top end speed. You can leave water switch where it is, it will not use any.

Your takeoff off speed will vary with all up mass and, importantly for the Persian gulf map, density altitude...the hotter the air and the higher your altitude the faster it will be because the air is thinner as these increase. Khasab is at sea level, more or less, so higher temperatures will be the major factor here...it may be hot enough that your max all up mass needs to be reduced...perhaps another reason why you were not getting off the ground before your wheels burst. You might need to take less weapons in hot weather.

As for the fin under the tail...could be aerodynamic stabiliser, tailstrike protector or House an aerial of some sort, like a radar warning receiver for example....or some or all of those things.

Hope that helped...I might catch you later on BF...going to have my first serious go today.

[D4n]

Damn, a wall of text xD Thx so much for the explanation!! But flaps was all, I then rotate to 60° (nozzles) at 150-160kn, and BAM, Harrier staying at 0° aligned (horizontally) but climb-angle instantly at around 15-20° it felt like, typical epic Harrier takeoff, really awesome, then I wondered in horizontal flight with gear up "hmm... why so slow...? AH, flaps still STOL LOOOL" xD then the with flaps to cruise accelleration began ;)