What is "aircraft stability" - IN VIDEO

[bongodriver]

Even with a FFB stick the game will not recognise the user has taken their hands off the stick and therefore it will still assume it is just being held in whatever position the stick ends up, try it, move a FFB stick without covering the sensor to activate FFB and you can still make inputs, the game will just not simulate stick-free.

[Crumpp]

How about this has already been simulated in one FM and works very well.

It is not that hard to do.

It was a quick test which I would like to see others repeat although I did go to great lengths to ensure I was trimmed as stable as possible hands-off.

I would like to see others repeat it too. It does not take any elaborate set up.

From level flight, pull back and let go. The FM will return to trim speed.....

It is that simple.

Just like the Spitfire in the game is immune to overstress damage, it is statically and dynamically stable.

[ACE-OF-ACES]

Originally Posted by bongodriver

Even with a FFB stick the game will not recognise the user has taken their hands off the stick and therefore it will still assume it is just being held in whatever position the stick ends up, try it, move a FFB stick without covering the sensor to activate FFB and you can still make inputs, the game will just not simulate stick-free.

Agreed.. Sadly, Crumpp is so vested in this 'story', that he will ignore these facts and simply double down on the 'story' and ignore all these facts as if they were never mentioned.

[JtD]

I see Crumpp's posting the phugoids and spirals on the Spitfire again (35th time?). So I'll just repeat what NACA leading WW2 aerodynamics test engineer - all fighter aircraft of the era which were tested displayed instability in the phugoid and spiral mode. Put the R.A.E. chart from the Hurricane testing next to the Spitfires and you'll appreciate the Spitfires stability in these modes.

And Crumpp, before you post it a perceived 36th time, can you please remove your wrong labels? A plane going into stall in the first cycle is not stable.

[Crumpp]

Hurricane testing next to the Spitfires

Absolutely, by careful flying, a skilled Spitfire pilot can match the precision found in a stable aircraft.

That is not the issue.

The issue is the Hurricane does not require such attention to achieve and hold a precise acceleration. The Hurricane is stable.

[JtD]

Originally Posted by Crumpp

Absolutely, by careful flying, a skilled Spitfire pilot can match the precision found in a stable aircraft.

It's stick free behaviour.

[Crumpp]

It's stick free behaviour.

What are you talking about???

The Hurricane abrupt turn as recorded by the NACA is stick fixed. The Spitfire abrupt turn as recorded by the NACA is stick fixed.

The RAE stability measurements for general stability characteristics are stick free.

In both the RAE and NACA measurements, the Spitfire was longitudinally unstable with unacceptable characteristics.

That is why they added the inertial elevator to fix the longitudinal instability.

What is the issue? Why is blatent fact so hard to understand?

All the smoke, mirrors, and baloney put out about "it is normal" and "all fighters of the day" acted like that is pure fantasy.

If there was not a problem, then they would not have fixed anything!!!

[Crumpp]

Answer the question JtD:

Why did they modify the aircraft with an inertial elevator?

[fruitbat]

Originally Posted by Crumpp

Answer the question JtD:

Why did they modify the aircraft with an inertial elevator?

Heres a question.

If they realised that they needed it for the MkV which no one disputes, why did they not come to the same conclusion for the Mk I in 1939?

It wasn't new tech.

And it has SFA to do with NACA, since they added Bob weigths to the MkV before NACA ever got there Spit V to test.

[JtD]

Originally Posted by Crumpp

What are you talking about???

You should know, you even highlighted it on the previous page, but in case you really can't figure it out - I am referring to phugoid and spiral modes, I've only said it about 5 times, so maybe it was lost on you. Phugoid, spiral. That's all I'm talking about. I do this because you keep bringing up an A.&A.E.E. chart supposedly illustrating how poor the Spitfire's stability was, where it shows nothing but long period oscillations, i.e. phugoid and spiral mode. This chart shows nothing out of the ordinary for a high speed fighter of that day and the characteristics shown are way better than that of the Hurricane. It appears to me that up to this minute, you don't even know what you're talking about, and yet you've made 100+ posts on the issue trying to convince innocent bystanders of something that's plainly wrong.

It is really getting on my nerves, and here it is in short form, so I can simply quote me every time you bring that chart up again out of context:

The A.&A.E.E. stability records for Spitfire K.9788 show stick free, long period dynamic stability characteristics, also known as phugoid and spiral mode. The records show typical behaviour for world war 2 fighter aircraft, and the characteristics are clearly better than those of other contemporary aircraft, in particular better than the characteristics of the Hurricane, which was also tested by the A.&A.E.E. at the same time.