Do large RC airliners like the huge Emirates RC A380 still need all the same control surfaces that a real A380 has I,e leading edge slats? If not why is this the case.
Many thanks for your time in advance Lee
I've seen several r.c. airliners first-hand and none had leading-edge flaps. It's a matter of scaling. Kinetic energy scales according to velocity squared and these r.c. planes don't land at the same velocity as their full-scale counterparts, so stopping distance is less of an issue and the need to slow down the touch-down speed a bit more vanishes.
Same reason that the r.c. versions usually also dispense with wheel brakes, thrust reversing (some actually do have this, the electric ducted fans are simply run in the reverse direction), elaborate Fowler flaps (simpler hinged flaps serve instead), etc.
There are also Reynold's number effects to consider, but we really don't need to get into that to understand why features such as operating leading-edge flaps are usually omitted from r.c. model airliners.
In any oddball cases where the pursuit for scale accuracy is carried so far as to include features such as leading-edge flaps, it is clearly not a matter of a need for such features!
Here's a related ASE link-- Why do model aircraft fly and maneuver so differently from real aircraft?