I have to answer the following question
"What is a rams horn vortex and what is vortex lift"
I can only find vague information or related but unspecific information. Such as : swept wing aircraft suffer a large increase in lift dependant drag at high angles of attack, mainly because of the rams horn vortex.
Thats nice, but what causes it?
I also red that rams horn vortices are beneficial on wings with a sweep greater than 45 degrees as they keep the wing flying at extremely high angles of incidence. (From website:
http://www.cranfield.ac.uk/coa/aerogram/aerog-26.htm)
But if rams horn vortices create major amounts of drag how can it be beneficial?
Can anyone explain some more to me??
Would be much appreciated. Thanks.