Max Speed of a-10

[Revencher]

the max speed i can get the A-10 up to is around 200kn what am i doing wrong. also is there a mod that will let me cary a full load out i can only get 1 bomb on the iner pylons

[GGTharos]

Why would you be able to carry more than the pylon can carry?

What you're doing wrong is putting too much stuff on your plane.

[pauldy]

As the game goes, it's hard to get past 290+ knots when you're plane's fully loaded..

 

200 knots? What weapons were you carrying?

 

You should be able to go beyond 270 at any season fully loaded

(Note the A-10 can fly faster in winter, :noexpression: odd.. maybe the below zero temps to blame? )

 

Also, did you retract your flaps after take off?

[GGTharos]

Yes, it is a feature of jet engines. Cold air = more thrust.

 

You should be able to go beyond 270 at any season fully loaded

(Note the A-10 can fly faster in winter, :noexpression: odd.. maybe the below zero temps to blame? )

[EtherealN]

Hm. Interesting. Is there an easy to understand explanation of that? (Or better yet - give me a reason to do math again. :D )

[lawndartleo]

(Note the A-10 can fly faster in winter, :noexpression: odd.. maybe the below zero temps to blame? )

 

Cold winter air does many good things for engine and wing performance. I fly Cessna 150/152/172 aircraft and I can tell you the difference between flying on Feb 15 and Aug 15 is dramatic. In January its tough to keep the thing on the ground on take off roll and in August is just as hard to get it off the ground. Wings generate more lift in the dense air and engines develop more power as well.

[Revencher]

Ya flaps and gear up and my wingman can fly rings around me. same fuel and weapons 2.

also i hear they r making a new A-10 and Apache sim is that true?

[EtherealN]

The next installment of DCS (http://www.digitalcombatsimulator.com) will simulate the A10C. Information about it will be released early next year.

 

Aside from that, there is no official decision made on which aircraft will be developed for the DCS series. Several aircraft are on the wishlist and has had some work done on them, but which one(s) will make it into full DCS products and when this will happen is not decided.

[Revencher]

is the Mi-24 on the wish list =)

why the US never made a helo like it ill never know.

and attack helo that carys troops waht a fn ausome idea. just like the isralys with there main battel tank being able to cary a fire team.

[asparagin]

Yes, it is a feature of jet engines. Cold air = more thrust.

 

Cold air = compressed air = more air = more oxygen = better thrust

 

the air will be compressed anyway in the jet, in winter it has to do less work

Edited December 8, 2009 by asparagin
better idea

[EtherealN]

Revencher, the Mi24 is on the wishlist. Indeed, with a bit of digging through old posts by ED staff you might be able to find development screenshots of the Mi24 cockpit.

 

However, when and if that becomes a DCS module is not decided.

[CHola]

Hm. Interesting. Is there an easy to understand explanation of that? (Or better yet - give me a reason to do math again. :D )

 

Any jet engine works with the amount of air it can process and it's expressed in maximum airflow in kilograms of air per second (kg/sec).

So, during Winter due the low temperatures, the air is more dense than hotter Summer air and contains more oxygen for burning. The other benefit is that the turbine is better cooled and so allows higher compression for the same max. turbine temperature and therefore higher thrust.

[Panzertard]

Cold air = compressed air = more air = more oxygen = better thrust

 

the air will be compressed anyway in the jet, in winter it has to do less work

 

And more drag.

So the full math about this thing would be interesting, indeed. ;)

(Hint, Ethereal & GG).

[Feuerfalke]

Cold air = compressed air = more air = more oxygen = better thrust

 

the air will be compressed anyway in the jet, in winter it has to do less work

 

Exactly.

 

Another effect is that this already more compact air carries more weight, thus increasing lift, which again leaves more energy for the forward thrust.

 

Besides that the more dense air also causes a higher pressure on the pitot tube, increasing IAS.

[asparagin]

Besides that the more dense air also causes a higher pressure on the pitot tube, increasing IAS.

 

Hi Feuerfalke,

could you give more details about this part?

 

Yes more drag, this is true, applies to all flyables.

Considering the effect on the jet engine, this should play a major role on the A-10, because it has those huge (airliner :)) fans.

[EtherealN]

Indicated Air Speed really measures amount of air - as in, amount of material - passing. When you are flying through a medium you have a resistance pressure that can be measured, and this is what IAS (Indicated Air Speed) actually measures.

 

Let's posit a scenario where there is zero wind. You are flying through the air at ground level, with a given air pressure - that is, air thickness. At ground level and zero wind your indicated air speed will show the same as your ground speed. However, if you rise up in the air the pressure will decrease, and your IAS will no longer agree with your GS. (Nor will it agree with your TAS - true air speed.)

 

Now, aside from the fact that pressure decreases with altitude, there are also the effects of temperature. Hot air is lighter - that is, less dense - and therefore rises. So cold and thereby denser air could male your IAS show MORE than your GPS-verified GS even in no-wind conditions, because there are more particles hitting your instruments.

 

The reason why IAS is still kept in spite of it so often giving you "wrong" information is because aerodynamically it is IAS that matter. It's the airflow that governs how your aircraft behaves, after all, and the same with your turbine, not your ground speed.

[Feuerfalke]

+1 what EtherealN said.

 

 

Your airplane is much more dependent on the air than on the ground. E.g. you take off against the wind. With the wind coming at 20kph in your direction makes the over-ground distance needed for take-off much shorter. You need less range to reach the additional airspeed for take-off. Taking off with the wind takes a much longer distance over ground, as your startoff-speed is -20kph IAS.

Accordingly the pitot gives you the relevant information for your actual speed, not the speed over ground.

Check out this video:

 

The IAS and lift is depending on the density of the air, though. In simple theory, if you fly in 0 windspeeds-conditions at 300kph IAS and then increase your altitude, the thinner air will cause less pressure on the pitot and as such the IAS will continuously decrease. Same is for lift of your aircraft until you reach an altitude where the IAS falls below the minimum velocity and the wings can't produce enough lift in the thin air to get any more altitude.

[Panzertard]

Exactly.

 

Another effect is that this already more compact air carries more weight, thus increasing lift, which again leaves more energy for the forward thrust.

 

Besides that the more dense air also causes a higher pressure on the pitot tube, increasing IAS.

And Drag.

... not the kind I'm dressing up like every weekend, but the kind that gives you more resistance in air ....

[mvsgas]

Ya flaps and gear up and my wingman can fly rings around me. same fuel and weapons 2.

Don't go by what the wing man can do. I do not think they have flight model, meaning that AI controlled aircraft do not fly the same as ours. The flight model on the A-10 is not as "complicated" as that of the SU-25T, but as a general rule, the more weapons the slower and less maneuverable you are.

On the A-10, I normally carry 2 mavericks, tow AIM-9, AN/ALQ-184 and 2 to 4 clusters or MK82 depending the target.

Try different ammo configurations see what works for you.

[asparagin]

Thanks for the explanaitions EtherealN and Feuerfalke,

 

I had misunderstood the sentence:

"Besides that the more dense air also causes a higher pressure on the pitot tube, increasing IAS. "

The dense air increases IAS, i understood the "pitot tube increases IAS" (which is only an instrument) :doh:

 

nice video anyway!

[Feuerfalke]

And Drag.

... not the kind I'm dressing up like every weekend, but the kind that gives you more resistance in air ....

 

Right ;)

[71st_Mastiff]

271 MPH and up to 317MPH is what I see fully loaded 10650lbs of fuel

[Revencher]

I think it depends on the engin becouse as a genral ruel jetengins work better at higher alts where the air is thiner. thats y most jets fly at 20k + feet and turbo props fly lower

[Revencher]

max speed emty and 50% fuel is only 280. the actual plain gos faster then that and i still havent herd if FC alows u to mount more then 1 bomb on the iner pylons.

[sweinhart3]

The colder the air the more dense it is. Therefore you can compress more air and create greater thrust. That is also why less runway space is needed on cold days than hot days.