Su-25T first flight

[cobrabase]

?!!

 

Perhaps a road?!

 

Can you post a map screenshot (F10) of that runway with coordinates, please?!!

 

 

I know that every default AB in LOFC has an ILS provision! But not every runway! There are two airstrips in Sochi/Adler AB but only 24-06 has ILS! Landing on a 20-02 requires visual! Is that what U mean?!

 

Yes! EXACTLY! That's what I mean. The mountainous terrain makes landing the Su-25 here very difficult on the ILS so you can't use it. Sorry for the confusion.

Edited July 15, 2008 by cobrabase

[cobrabase]

Day two was... interesting. I have the Cougar HOTAS which makes life a whole lot easier with sims. I think it might be starting to show its age. I had some weird problems with it today.

 

It's sending random commands at times. For example...

 

1. Firing circuit for the trigger command was all fouled up on the range today. Sometimes my S8s fired other times... nothing. Sometimes they would fire AFTER my turn-away from the target - wasted ordnance.

 

2. Somehow the "G" and the "P" command was sent to the sim before touchdown. I had my gear down on final when all of a sudden they went up. I skid down the runway flaming all the way. The second time because somehow the P command had taken place my chute was shredded and I careened into an orchard at the end of the runway. Once again.. decent landing ruined by my HOTAS.

 

Remember when posted the movie on the worst sim-fliying day of my life and the canopy blasted off? I traced it to my HOTAS.

 

I'm working on isolating the problem.

 

Does the Su-25T slowly roll to the left normally? I think for some reason my HOTAS is out of calibration too. I fixed the firing circuit (a DX problem) and plan to give it all another go tomorrow.

[nemises]

I have heard a lot of people complain that it pulls on Rolling..I usually am pretty busy on the rudders at takeoff, but havent noticed any particular issues while taxiing.

[Case]

Does the Su-25T slowly roll to the left normally?

The advanced flight model of the Su-25T will make it roll when you have an asymmetric wing loading or if there is crosswind. With the 25T, the autopilot modes are your friends... learn to use them. :thumbup:

[Triggerhappy69]

The advanced flight model of the Su-25T will make it roll when you have an asymmetric wing loading or if there is crosswind. With the 25T' date=' the autopilot modes are your friends... learn to use them. :thumbup:[/quote']

 

 

I have been reading this thread with great interrest..! And it's such fun hearing that we have different approaches to the "right" way to land the 2u-25T. Personally I ONLY fly the "Frog", it being in the shape of a "vanilla" or a "T". And I have to agree with whoever said PATIENCE..!

 

Threat her like a fine woman, and she will reward you with being sweet and fast and deadly..! :joystick:

 

BUT..! Do I understand you right when I say that you use the autopilot AFTER touchdown..? That's a new one for me.!

[Case]

BUT..! Do I understand you right when I say that you use the autopilot AFTER touchdown..? That's a new one for me.!

No, that's certainly not what I meant, but I didn't read cobrabase's comment on rolling to be specific to landing and take off....

 

Obviously the autopilot modes are for when you are up in the sky :)

 

Besides that, I was very happily amazed by the differences in handling between the 25T and the vanilla 25. Though the latter is more difficult to navigate, it flies so much smoother! I really like flying it...

Edited July 15, 2008 by Case

[Dunkan Aidaho]

You will also roll when you try to change your pitch. Your engines are powerful gyroscopes, and when you try to rotate gyroscope it will try to perform side-move => the AoA on your left and right wings will become not equal and plane will start roll.

 

This effect is wery easy to spot by performing low speed G pull with engines running at max RPM. And this is also the answer, why you cant perform clean loop without using the pedals while engines is running.

 

Unfourtunally I do not know english name for this effect. See addititional info in english physics manuals.

[Case]

You will also roll when you try to change your pitch. Your engines are powerful gyroscopes, and when you try to rotate gyroscope it will try to perform side-move => the AoA on your left and right wings will become not equal and plane will start roll.

 

Oh wow, I didn't know that this effect was in fact important, let alone modelled into the advanced flight model! Fantastic.

 

The physical effect you are describing is that of the conservation of angular momentum. In essence this means that an object spinning around an axis will resist the rotation of this axis.

[Dunkan Aidaho]

Oh wow' date=' I didn't know that this effect was in fact important, let alone modelled into the advanced flight model! Fantastic.[/quote']

Some maneuvers can not be performed without understanding this effect. For example while performing "bell" figure pilot must have RPM set to idle in upper point of trajectory otherwise he might descend in a spin.

[cobrabase]

You will also roll when you try to change your pitch. Your engines are powerful gyroscopes, and when you try to rotate gyroscope it will try to perform side-move => the AoA on your left and right wings will become not equal and plane will start roll.

 

This effect is wery easy to spot by performing low speed G pull with engines running at max RPM. And this is also the answer, why you cant perform clean loop without using the pedals while engines is running.

 

Unfourtunally I do not know english name for this effect. See addititional info in english physics manuals.

 

And I thought it was another one of my weird HOTAS problems!

[Malleus]

And I thought it was another one of my weird HOTAS problems!

 

You know the saying ... it's not a bug, it's a feature!:smilewink:

[GGTharos]

I can make an overhead landing track for the 25T if you guys are interested ... it is THE way to land that bird.

[RedTiger]

Sure..why not. Consider this my vote for such a track.

[cobrabase]

Oi... here I am this morning landing without autopilot assistance.

 

http://www.youtube.com/watch?v=YxgZrEQ77hM

 

Mind doing a critique? No sound here just line up and landing.

[Silent Warrior]

Bah, I can't land it properly anyway! :D I try to stay below 300 (230-280 - I'm used to checking mph, not kph, mkay?), and COMPLETELY agree that the damage-modelling in the Frogfoot is effin sw33t. Been seeing it a lot.

[GGTharos]

Sure. I couldn't see your airspeed in that one, but given your deployed the chute right away, I figure you touched down at less than 250kph which is great. You controlled your descent nicely enough.

 

The problem here is that you came in too high; you're looking for a 3 deg glide slope, and you had about 5, maybe more.

You also landed long; this is a by-product of coming in too high. If you see you're going long and you're not fuel critical, or damaged (in other words, you are not in a I HAVE TO GET THIS SUCKER DOWN NOW! condition) you should have pulled in the gear, gone full power and retracted flaps back to take-off, and gone around for a second attempt. This is basic airmanship and in LO it isn't as terribly important as in RL, but I'd think a VPilot would take it on pride to fly his vPlane correctly and safely :D

 

Your touch down could have been just a little gentler - flare the nose a little higher, the wing in ground effect should help you touch down gently.

 

Not a bad attempt for a beginner - and you didn't break the jet.

[RedTiger]

I can't look at any of these videos just yet, but are we talking about visual landings, HUD ILS cues or cockpit ILS? My previous joking aside, I can land it safely using the HUD ILS. I mean, it gives you all the cues that the SFM jets do, you just have to actually abide by them. I'm assuming we're talking about landing visually or at least without the HUD...

[GGTharos]

This was a visual landing, and cobrabase didn't seem to be using the ILS. (Use it, cobrabase! It works!)

You should be able to land it using the ILS bars on the ADI, but you need to be watching additional instruments in the pit - your VVI and airspeed in particular, and of course your altitude.

 

Cross-check that you're where you want to be ... 100m altitude per 2km distance from the runway or so.

[Esac_mirmidon]

Cobrabase:

 

No problem at all. Use this image for free...

 

But the sentence IS MINE ¡¡¡¡¡ ONLY MINE ¡¡¡¡

 

Well and Clint also...

[cobrabase]

This was a visual landing, and cobrabase didn't seem to be using the ILS. (Use it, cobrabase! It works!)

You should be able to land it using the ILS bars on the ADI, but you need to be watching additional instruments in the pit - your VVI and airspeed in particular, and of course your altitude.

 

Cross-check that you're where you want to be ... 100m altitude per 2km distance from the runway or so.

I used the ILS dude. Did you see the circles in the Hud?

[cobrabase]

Cobrabase:

 

No problem at all. Use this image for free...

 

But the sentence IS MINE ¡¡¡¡¡ ONLY MINE ¡¡¡¡

 

Well and Clint also...

 

Yes Sir! All Baranovich's words are all yours! Thanks!

[GGTharos]

Barely, the movie is of very poor quality in terms of seeing HUD details :(

It didn't look like you were pointing the nose into the circle.

 

I used the ILS dude. Did you see the circles in the Hud?

[Case]

You should be able to land it using the ILS bars on the ADI, but you need to be watching additional instruments in the pit - your VVI and airspeed in particular, and of course your altitude.

 

If it hasn't been mentioned already, check out IronHand's page on flightbasics at: http://flankertraining.com/ironhand/flightbasics.htm

 

Especially the Steam Gauge Navigation: ILS and the Navigation in the Steam Gauge World videos. Here he describes all the instruments you need to make a pure instrument landing. It will apply for all RusFor aircraft and will come in handy when you've lost your HUD and MFD during the battle or the mission has pea soup at low altitudes.