Flaps deployment

He states: The slip stream or air load won't keep the flaps from going out. Though if you are at 500 and go flaps 50 or full, they may just we'll break, bend, break the actuating Rod etc before they get all the way out.

Maybe there is an issue with the damage modelling of the flap system in DCS, and that it should be damaged instead of just stopping... but his statement confuses me as well... if the forces for extending them are the same as the forces of the air acting against them, wouldnt that nullify each other and cause the flaps to just stop? I mean he is admitting if you seriously overspeed them, they might break, so why wouldnt the same be true for equal forces against them?

I mean that is a serious question... I didnt pay much attention is math class in school...

And Another:

 

part of my original question:but in sims the P-51s flaps refuse to come out farther than the amount allowed for a given speed even if I put the flaps controls down to the bottom. If this is indeed accurate behavior, is it limited because some kind of safety is preventing it, or because there is insufficient hydraulic pressure to make it happen?

 

(in response to a question I had about the plane)XXXXX: The real 51 flaps come out "RIGHT NOW!!!!!!" Your game, and I emphasize GAME, having nothing to do with 1400 lbs PSI in REAL life, has nothing to do with reality. No! Nothing in your GAME as described is accurate!

 

 

Starkey So they come out at any speed? Even if over prescribed limit? That is very interesting.

 

 

XXXX: Yes! And you may break them if deployed to fast!

Ok, please tell any aero-engineer dealing with hydrolics that he has to design a hydro actuator with force capacity much more that it needs for safe operation. I presume that you do understand that if full flaps are allowed below 175 mph then 220-240 mph dynamic pressure will break flaps, hinges, etc.

There is no room to increase allowable forces increasing the weigh - otherwise the plane would not fly.

The same is for hydrolic cylinder - increasing it's diameter to increase force will lead to weight increasing.

I had an opportunity to calculate for DCS undercarriage retracting gears for several aircraft and helo (A-10, Ka-50, Mustang, Dora, Su-27 partly), operating with actual values for masses, hydrolic cylinders dimensions, pressures, kinematic design, etc and I can say, that these systems has very low extra-capacity regarding available forces.

Maybe there is an issue with the damage modelling of the flap system in DCS, and that it should be damaged instead of just stopping... but his statement confuses me as well... if the forces for extending them are the same as the forces of the air acting against them, wouldnt that nullify each other and cause the flaps to just stop? I mean he is admitting if you seriously overspeed them, they might break, so why wouldnt the same be true for equal forces against them?

 

I mean that is a serious question... I didnt pay much attention is math class in school...

I asked Nick Grey about it. And the way the flaps are realised in DCS corresponds to his answer. That corresponds my technical consideration, too.

He states: The slip stream or air load won't keep the flaps from going out. Though if you are at 500 and go flaps 50 or full, they may just we'll break, bend, break the actuating Rod etc before they get all the way out.

I asked again - WHAT IS THE REASON TO MAKE SUCH OVERSIZED, OVERPOWERED, OVERWEIGHTED, DANGEROUS ACTUATOR?

:megalol::megalol:

I think that was addressed at you ;)

So.....every aspect of a plane is perfectly engineered then? Not possible to make something that doesn't fit with your view of necessary? Neither of us designed the plane, so ask them not me....

This goes back to what I have told you in the past, you have to give compelling proof that something isnt working as it should, so far you havent, not for the P-51, the 109 may have issues it sounds like though.

Bf-109 flap deployment speeds attached.

 

Yo-Yo, I have an investigation into the flap breaking pressures for the FW-190 if you would like it?

 

I have to dig it out of the file cabinet and scan it.

I dont see it? Can you send to me and I will try testing tonight as well?

Bf-109 flap deployment speeds attached.

 

Yo-Yo, I have an investigation into the flap breaking pressures for the FW-190 if you would like it?

 

I have to dig it out of the file cabinet and scan it.

Yes, it would be very useful making accurate electric motors (or circuit breakers) currents and damages... :) now they work within true model, but it could get more accurate.

I will be very grateful!

It would not let me attach it twice so I gave the link to the previous post.

Thanks Crumpp, sounds like that part is still being tweaked so I will wait on testing for now, but might come in handy later :)

NA 5914

 

"When you move the flap control to a certain setting, the flaps will move to that position and remain there until another is selected"

During overspeed as well?

Think about that for a second. For what reason other than over speed would the flaps move without the pilots command? It would seem quite silly if the flaps simply moved on their own without pilot command. Yet, they are clearly stating that the flaps will NOT move unless the pilot moves them. Seem like a odd thing to be so clear on.

You lost me now, what does this have to do with not being able to open the flaps full when over the safe limit to do so?

As was previously pointed out as well, I cant imagine why youd need to put a placard in the cockpit and manual warning the pilot of over speed if the system was automatic. It says dont deploy flaps at those speed, implying that you can....Why not state: Here are the speeds you cannot do, but the system will take care of it for you so your good.

No one is saying the system is automatic that I can see, what is being said, when you get to a point that the forces are stronger than the actuators pushing the flaps out, they will stop, and if you continue to speed up, they will break...