Sideslip effects on ASI indications...

[Anatoli-Kagari9]

I find the effects of sideslip on the ASI readings very plausibly modelled in this module, and certainly a lot more noticeable than those on the other WW2 modules.

 

There is a dramatic drop in the readings the higher the sideslip angle is - which is consistent with the effects it has on the relative flow over the dynamic and static ports.

 

I wonder if this is also modelled in the other modules, or if it's a specific detail more carefully modelled in this particular module ?

[Precog]

You sure it's not just due to the extra drag caused by the sideslip causing the the plane to slow down..As it should?

[Anatoli-Kagari9]

You sure it's not just due to the extra drag caused by the sideslip causing the the plane to slow down..As it should?

 

I hope it isn't because the moment you start flying coordinated again, the speed instantly builds up to where it should be, given the loss due to the drag while you were flying in sideslip...

[escaner]

I haven't tried sidelisps in the DCS Spit, but what jcomm describes I have experienced in C152 and C172.

[Anatoli-Kagari9]

Yep, and it's particularly noticeable for me IRL too whenever I fwd slip my gliders :-) Wow - sometimes scary to the more aviation-knowledgeable passengers who keep checking the instruments :-)

[mkiii]

Iisn't the drop in indicated speed just due to the fact that the pitot tube is not facing the direction of flight, thus decreasing the "ram" effect of the pitot.

 

If it is pitot/static, (which I think the spit is) then the effect of the slip also causes the static port to misread.

 

I believe that the direction of slip can also make a difference. I seem to recall that one direction can increase IAS, and the other decrease it.

 

There is a time delay before the bellows in the instrument can recover, so it is best to wait a few seconds after manouvering to get a more accurate reading.

 

Pilots may differ in opinion... I was just groundcrew ;)

[Anatoli-Kagari9]

Iisn't the drop in indicated speed just due to the fact that the pitot tube is not facing the direction of flight, thus decreasing the "ram" effect of the pitot.

 

If it is pitot/static, (which I think the spit is) then the effect of the slip also causes the static port to misread.

 

I believe that the direction of slip can also make a difference. I seem to recall that one direction can increase IAS, and the other decrease it.

 

There is a time delay before the bellows in the instrument can recover, so it is best to wait a few seconds after manouvering to get a more accurate reading.

 

Pilots may differ in opinion... I was just groundcrew ;)

 

Exactly, but seldom modelled correctly in flight simulators, hence my OP when I became aware that is is apparently so well modelled in the DCS Spitfire.

[NeilWillis]

I agree jcomm, it certainly behaves as if that is the case. It happens too fast to be a change in airspeed, inertia would have to be completely absent, and if that was so, no flight model would work.

 

What we see is, I assume, clearly instrumentation being more accurately modelled.

[Sporg]

It should be possible to check using external view.

There it shows TAS instead of IAS.

 

Otherwise Tacview should be able to tell as well.

[Pocket Sized]

Also, anyone noticed how the altimeter goes insane during a dogfight? That's something I haven't seen in any flight simulation, even though it should be present on all aircraft equipped with an analog altimeter. Very nice touch!

[Anatoli-Kagari9]

What I haven't yet been able to find were the gyro precession errors....

 

When i start a mission i align it using the M-8, and after no matter what time and type of flight / dogfight, they're still in sync...