what are those wire things at the wingtips?
 

Like on the Great Planes 1/4 scale Gene Soucy Extra 300S?

RE: what are those wire things at the wingtips?
 

Visual aids for the pilot. When the look out they can see where they are in relation to the ground without looking at instruments.While doing a demonstration.

RE: what are those wire things at the wingtips?
 

ah ha! i always wondered about that too!

ted

RE: what are those wire things at the wingtips?
 

To add to what Jim said.

Thay are typically used on aerobatic aircraft and especially IAC, the competition aircraft. IMAC is modelled after the IAC but we stand on the ground looking up at the plane. The pilot on many manuevers doesn't have any idea whether they are are at 90degree, 85degree ect or 45degree, 60degree. So by looking at the wing tip, the pilot can decide if they are flying the manuever correctly. In IAC, the judges are on the ground so no wind correction is the rule as the pilot cannot tell if he/she is being blown off course or not, but he/she can determine if the fuse is straight up, or flying a 45degree. Other instruments and visual points can be used to tell if wings are level.

Ed