Implications of a wing pod creating lift...
Joined: Mar 2011
Posts: 1,407
Likes: 0
From: engineer at large
I know, I know...the fuse is off limits...
In reality, there should be plenty of guidance for connections to the bottom of the wing. (or add them to the tops of the winglets! hahaha)
Are you looking at sub or super sonic?
(vastly overlooked is the top of the tail, but you have little downward coverage)
In reality, there should be plenty of guidance for connections to the bottom of the wing. (or add them to the tops of the winglets! hahaha)
Are you looking at sub or super sonic?
(vastly overlooked is the top of the tail, but you have little downward coverage)
Fleet Manager
Joined: Apr 2001
Aviation Qualifications: ATPL
Posts: 7,448
Likes: 310
From: various places .....
I just can not see how the nacell and engine can produce lift
Three immediate considerations -
(a) curved surfaces with fluid flow can generate significant forces
(b) flow through the engine at high alpha or sideslip angles involves turning the airflow at the nacelle inlet - equals forces. Indeed, this sort of problem can create LSS implications in the missed approach as the lip lift force is destabilising. Also a problem with many piston to turboprop conversions at the prop disc.
(c) likewise, at high angles, the engine efflux thrust can be resolved into vertical and horizontal components.
Three immediate considerations -
(a) curved surfaces with fluid flow can generate significant forces
(b) flow through the engine at high alpha or sideslip angles involves turning the airflow at the nacelle inlet - equals forces. Indeed, this sort of problem can create LSS implications in the missed approach as the lip lift force is destabilising. Also a problem with many piston to turboprop conversions at the prop disc.
(c) likewise, at high angles, the engine efflux thrust can be resolved into vertical and horizontal components.
Joined: Jan 2005
Posts: 2,315
Likes: 10
From: France
Brian,
Many thanks !
I'll have to go through those step-by-step to see what I can learn.
A lot seem to be "things with fins" (tanks, bombs, rockets ...) where a slight misalignment of one fin is enough to start a violent tumble.
CJ
Many thanks !
I'll have to go through those step-by-step to see what I can learn.
A lot seem to be "things with fins" (tanks, bombs, rockets ...) where a slight misalignment of one fin is enough to start a violent tumble.
CJ
