Aces High Bulletin Board

General Forums => Aircraft and Vehicles => Topic started by: Dux on April 18, 2006, 09:23:20 PM

Title: Me262 Slats...
Post by: Dux on April 18, 2006, 09:23:20 PM

IRL, would the Me262's slats repeatedly slap open and shut during gentle cornering while taxiing on the ground?

I thought slats dropped out below a certain airspeed... are the 262's slats operating on a different mechanism?

Just curious.

Title: Me262 Slats...
Post by: Charge on April 19, 2006, 03:41:15 AM

I really doubt if they generally moved at all whild taxiing. If, for some reason, they were open they would slam shut when the speed built up.

So, nothing radical.

AFAIK the 262 slats work the same as those on 109 so they are not controlled but deploy at certain angles of attack.

-C+

Title: Me262 Slats...
Post by: Debonair on April 19, 2006, 04:49:16 AM

triggered by the stall warning sensor i'd bet, but i dont know for sure

Title: Me262 Slats...
Post by: mussie on April 25, 2006, 02:44:46 AM

I though that they were just spring mounted and opened when the force of the wind fell below a certain level (ie the plane slowed down)....

Title: Me262 Slats...
Post by: Angus on April 25, 2006, 05:00:45 AM

Automatic slats, - no springs.

Title: Me262 Slats...
Post by: Schatzi on April 25, 2006, 05:30:06 AM

mussie, no, they are not triggered by speed, but by angle of attack. At least the automated slats are (not sure if the 262 had pilot controlled or automated ones).



Heres (http://www.simhq.com/_air/air_002a.html) an article about flaps and slats and the aerodynamics involved. Warning: Might cause severe headaches :).

Title: Me262 Slats...
Post by: Dux on April 25, 2006, 12:28:33 PM

If so, then why would they pop out while taxiing?

Title: Me262 Slats...
Post by: LLv34_Snefens on April 25, 2006, 03:24:50 PM

The deceleration causes them to pop out?

Title: Me262 Slats...
Post by: Casca on April 25, 2006, 03:49:06 PM

The type of slats I have quite a bit of experience with, on a Heliocourier H295, are merely mounted on rollers.  At rest or taxiing they are extended by virtue of gravity and the geometry of the tracks and are retracted by merely being pushed back against the wing by oncoming airflow as the aircraft accelerates.  At high angles of attack such as on short final, the relative wind shifts enough to cause them to extend (with four fairly loud bangs).

They must be modeled to close at taxi speed on the 262, eh?

Title: Me262 Slats...
Post by: Golfer on April 28, 2006, 09:21:48 AM

You taxi too fast :)

I've seen it done before but you need to be at exactly the right speed and then turn either right or left.  The smidge of extra virtual airflow over the outboard (faster) wing will provide just enough increase in AoA to pull up the slat and it will come back down as the wing decellerates.

Remember...taxi at the speed of a fast walk!