Are slats shy ?

Glider · #1 10-31-2011, 08:33 PM

In real use, the slats on the Me109 are deployed automatically once the speed is reduced beyond a certain level and that activation speed is higher than the aircraft stall speed. So I would expect them to deploy.

It sounds as if they are doing what they were designed to do

The activation of the slats has nothing to do with keeping the ball centered.

TomcatViP · #2 10-31-2011, 08:36 PM

Quote:

Originally Posted by Glider

In real use, the slats on the Me109 are deployed automatically once the speed is reduced beyond a certain level and that activation speed is higher than the aircraft stall speed. So I would expect them to deploy.

It sounds as if they are doing what they were designed to do

The activation of the slats has nothing to do with keeping the ball centered.

The ball is all abt not falling in a spin (or a bank over). What I want to tell is that as soon as the slat are deployed the plane is entering in a spin. My guess is that there is a bug here

conio · #3 10-31-2011, 08:43 PM

I'm unsure if the graphics match the FM (i.e. seeing or not the slats deployed currently makes any difference).
Anyway, I noticed yesterday that while powering up the 109, the slats started to pop out and in, out and in (no pun intended).
Since they move relative to the air speed, the slats should be out when the plane is in a stopped state on the ground which seems not to be the case.

TomcatViP · #4 10-31-2011, 08:58 PM

Quote:

Originally Posted by conio

I'm unsure if the graphics match the FM (i.e. seeing or not the slats deployed currently makes any difference).
Anyway, I noticed yesterday that while powering up the 109, the slats started to pop out and in, out and in (no pun intended).
Since they move relative to the air speed, the slats should be out when the plane is in a stopped state on the ground which seems not to be the case.

I did pay attention to that. May I suggest you to hit the break before a full stop while watching closely at the slats ?

(this Sim is really great)

IvanK · #5 11-01-2011, 12:51 AM

Quote:

Originally Posted by cheesehawk

What am I supposed to see split seconds before my nose goes into the ground?

All those indiscretions in your soon to be expunged life

ACE-OF-ACES · #6 11-01-2011, 01:33 AM

How can she be shy if she is a slu..

Oh.. wait one..

slats!

My bad.. thought you were talking about something else!

JtD · #7 11-01-2011, 05:06 AM

109 E plane description says they should extend at 180 km/h.

IvanK · #8 11-01-2011, 06:54 AM

Here are the values the RAE determined in Flight test Source AVIA 6/2394 BF109E Evaluation

These are 1G values. So slat deployment under G will be Whatever number you use (ASI or trailing) from these x SQR of the G

Crumpp · #9 11-01-2011, 09:40 AM

Quote:

es but NACA didnt have 109E's and 110's to test and record data on

There is plenty of Mtt data on it.

JtD · #10 11-01-2011, 04:21 PM

Quote:

Originally Posted by IvanK

Here are the values the RAE determined in Flight test Source AVIA 6/2394 BF109E Evaluation...

A pretty good match with the simple statement in the 109E description, all things considered.

Regardings Crumpps chart, "Spaltklappen" and "Spreizklappen" are two different types of flaps, not leading edge slats. The slats don't open gradually. But from that polar and the RAF test, it should be easy to derive the AoA of ~ 8° at which they bang open.