Is it just me, or do the newer flaptrack canoes on the 320neos look a bit pointier than the older ones on the ceo? I see that the pylons are shorter, that little stub fairing that sticks back behind the wing on the ceo is not on the neo, maybe that optically messes with the others.
Could be… Airbus introduced a “Lift Improvement Package” for the NEO.
According to their blurb… “In order to reduce the landing distance, the neo has a Lift Improvement Package (LIP). This is designed to lower the approach speed and is achieved by aerodynamically modifying the slats, spoilers and fairings, along with the addition of an outboard nacelle strake. Because of this, a 4/5 knot improvement in the stall speed is achieved.
However, I can’t seem to find any detailed specifics about LIP – maybe somebody here knows.
Thanks, I’ll try to find a diagram of it. I’m assuming the outside nacelle strake refers to the 320neo model specifically, all the others in the ceo generation had them on the outside, only the 320ceo didn’t My guess is that the benefit didn’t outweigh the cost of recertifying them that way.
The NEO engine pylon doesn’t stick out quite as far behind the wing as the CEO but afaik/as far as I can tell the flaptrack fairings are all the same size.
As for the engine strake, the A320 is the base model and oldest design of the CEOs. They added the strake and some other minor (Invisible) differences like speedbrake logic to the A321 and A319 which came out later. I assume the same as the comment above that Airbus just didn’t want to recertify such a popular model or create a new subvariant.