By Mazey Rix
Reasearch: I am going to just be looking at four types of wing dihedrals:
What is a dihedral?- the angle that the wing is tilted
positive dihedral- very stable but not as much lift. Most planes have a positive dihedral.
neutral dihedral-some lift and is somewhat stable. If you start tipping, you keep tipping unless you change it and bring it back to its regular position.
anhedral wing (also known reverse dihedral or negative dihedral)- lots of lift but not stable. Some fighter jets have an anhedral wing, because this helps them roll faster. Naturally the plane wants to flip over.
Here are some different dihedral designs:
Real Life Examples
My experiment and the steps I took:
Independent variable (change)- the different dihedrals on the airplanes
Dependent variable (results)- how far and well the airplane flies
Constant variable (same)- I throw it the same way, measure the same, and twist the rubberband the same amount.
Control group- no dihedral (flat)
What am I testing-the length the airplane flies and the flying qualities
-research background information
-test the balance and weight of airplanes
-begin testing (1,2,3,qualities,video)
- transfer into smore