Hello to all !
Being one of my first posts in here ( I guess a bit of a veteran in some other forums

) , I wish to ask the very qualified and intellectual fellow colleagues some questions which have recently arisen during a conversation or two :
1) I have heard that the A340 has vortex generators on its engine nacelles - Is this true, and why are they in place ?
2) Is there a specific reason why the A340 has only double slotted fowler flaps whereas the 747-400 has triple slotted fowlers ? My initial reasoning on this is that due to the 747 having a wing sweep angle of 37.5 deg, in comparison to 30 deg sweep angle on the Airbus fleet, then this would account for the fact that with more sweep, a higher angle of incidence (angle of attack) is required to achieve the same given amount of lift as per a straight wing - or in this case the A340 with less sweep angle ? On this note, I do undestand that the slotted sections on these HLD are primarily in place to re-energise the Boundary Layer airflow over the trailing edge section of the wing, thus reducing drag ; increasing stall speeds, allowing the aircraft to approach at a lower speed on approach...etc..etc...
Your help in these areas would be much appreciated...
PS : I do have an upcoming interview in Hong Kong and would also appreciate any further advice as to the whole process, such as typical questions being asked and the process itself.
Once again, many thanks in advance,
A keen, future CX employee