Skylune wrote:
How long do they need? I think 2500-3000 feet would not be enough to land
in marginal weather conditions.

Eclipse site says takeoff distance (over 50ft obstacle) is 2300ft at SL
airports, 3500ft at a 5,000 MSL airport. Landing distance at SL is
2200ft. That capability opens up a whole lotta airports that can safely
accomodate the jet. Additionally, the Eclipse is the quietest jet
flying with takeoff noise levels significantly lower than the current
Stage 4 requirement. Combined with its climb profile on departure the
noise footprint should be quite small.