Wind behaviour

[ACG_pezman]

Well, we do not all have the experience of Manowar in RL but we all enjoy his rant explanations about what is right and what is wrong less right in all sims. I belive Manowar has a point (he alwways has). Do not judge him severely. Nothing will ever satisfy him but real life.

No judgement at all. As far as sims go, I don't think with our current technology we can make a sim that will be good enough to pass for RL, just ask aero. In order for him to calculate a second of actual flight, and by real word standards, with a very powerful machine, can take up to thirty seconds just to compute. With numbers like that there is no way we can simulate 100% accurate flight and make a playable game. This is why some areas have to be simplified. The BOS dev team has done an amazing job with choosing what is table based and what is dynamically generated to provide the realist feeling of flight without bottlenecking your PC too much.

 

At least that's how he explained it to me, smart guy that Aeroace.

[Guest deleted@50488]

Well, I have 35 yrs flying IRL, and continue, gliders only, as I believe "Manowar" also flies IRL, and I really couldn't find anything wrong with il2 BoS wind model, quite on the contrary...

 

He wrote in the OP:

 

"[...]Also we all know a plane "faces" the wind because wind pushes more the vertical fin surface while engine keeps its traction so left wind means left displacement but aeroplane facing to the right, and I haven't found that in game.[...]"

 

This doesn't make sense, at all, to me ?

 

1) an aircraft will always weathervane, when it's gear is in contact with the ground or turbulence causes a local change of the wind direction inflight. On the ground it'll head upwind, requiring downwind rudder and application of some aileron into the wind to avoid that the upwind wing rises;

 

2) This can be somehow compensated ( up to a given values of x-wind component, and depending on engine power in the case of a prop aircraft ) by the engine prop effects. So, in a CW rotating prop, the "torque effects" will add to a x-wind component from portside (left), and a right x-wind component (starboard) will "decrease" the prop effects ( * ). In a CCW prop it's the way around. Ingame some Russian figthers have CCW prop ( LagG3, Yak-1, ...) 

 

3) When airborn, the aircraft is moving WITH the airmass it is flying through.

 

Add to the above the turbulence effects as modeled in il-2 BoS ( actually much much much better than in either FSX or X-Plane 10, the civil sims I used the most ) and what I find in this flight simulator regarding basic weather modeling, and in particular winds, is simply GREAT! 

 

And... it also models something most sims do not model at all, including some professional trainning tools!!! The effects of Temperature in Pressure Gradient! We do not have VNAV approaches in il2 BoS :-) but should we have it, we would be able to see it "working" just like it does IRL when approaching, using a published VNAV approach, a runway with an ILS, in a cold Winter day, vs in a hot Summer day !

 

And believe me, gliders can really be tricky on x-wind conditions, specially during landing, since we nlack the propwash over our tail surfaces, and as speed bleeds off during the final stages of a landing... it can bring surprises :-)

 

( * ) I believe Manowar is probably being mislead by an effect programmed into another simulator we both also use(d), where a special effect of deflected propwash ( under very strong x-wind components ) on some of it's prop aircraft can lead to the aircraft wanting to head downwind, and even roll opposite what it should ( roll left with a left x-wind component, for instance.... ) This has been extensively discussed at the forums of that other sim in a thread initiated by me, and I ended up accepting it can be possible ( theoretically ), although no RW experienced taildragger pilot I have consulted with can describe ever having felt it IRL...

Edited March 18, 2016 by jcomm

[Ala13_ManOWar]

Well, we do not all have the experience of Manowar in RL but we all enjoy his rant  explanations about what is right and what is wrong less right in all sims. I belive Manowar has a point (he alwways has). Do not judge him severely. Nothing will ever satisfy him but real life. 

:lol: :lol:   You know I always appreciate your feedback, and after all I know you like my rants explanations .

 

 

Thanks Jcomm , but what I said in first place was right indeed, just happens with mild winds (windsocks running like in a mad hurricane tricked me about wind speed). You can fly with your nose downwind and that's just weird and so I commented. At some point I'll try to make a vid showing that, but don't expect it soon .

 

 

S!

[Guest deleted@50488]

Ok, maybe you really found something, sorry then :-/

 

I'll test again with mild winds.