/sci/ - Science & Math

>>5852645
Release any kite and the wind blows it in any direction the wind wants. It's the combined forces of the wind and you holding the string that determine the kites path.

>>5852645
wind pushed kite up relative to the kites frame. you are holding it with a line connected in the center so it balances out. if you connect the line on the left side it will spiral around anticlockwise.

>>5852655
for got to add, gravity acts like a second string, making it spiral at B. it will work at C.

>>5852655
No. The wind pushed the kite in one direction, and you holding the string is another force. Gravity is just another force acting on it. The average of all of these forces determine the direction. If the wind were blowing down, the kite would fly upside down.

>>5852669
>If the wind were blowing down, the kite would fly upside down.
wat.

>>5852670
If, somehow, the wind could blow from the sky to the Earth (off the edge of a cliff might might work), the kite would fly upside down.

>>5852670
Like in the image, if there were wind that is going down and lets up from the image, it would fly upside down.

>>5852680
no if the wind blew from sky to earth the kite would fly sideways.. except gravity would pull it down some to be counteracted by pulling on the string at a downward angle

>>5852669Yes, wat indeed.
To clarify my question, if the kite was between a and b what makes it go up to a?

>>5852680
>>5852685
>implying wind has to blow up for it to be at A.

>>5852689
pic related..
drag = d
l=lift generated by wind pressure
g= gravity
s=string force

>>5852691
The force of the wind, the deflection of the wind by the flying surfaces of the kite, you holding the string, and gravity all come together to determine the direction the kite takes. Modify the direction of force of one of these, and the kite takes a different path.

>>5852703
you sure are typing a lot of posts without actually conveying any information.

>>5852714
I'm really confused as to what you need to know. The kite "knows" nothing, but reacts to outside forces. The careful application of these forces cause the kite to "rise".

>>5852701
"string force" is combined gravity and thrust oposing equal lift and drag.

Red=lift, acts parallell to the string (nevermind the drag)
What is the green force?

>>5852762
The kite is also trying to redirect the wind because of its angle of attack. The force from the low side ha more of an advantage than the force from the high side.

>>5852762
Could be a force due to the wind, in the direction perpendicular to lift, which continues to act perpendicular, until it's at B where it then acts horizontally

>>5852770
>>5852771
You are both full of shit. At least you seem to understand my question.

>>5852807

They're not full of shit. That's all there is to it. Ever stick your hand out a car window?

>>5852826
Speak for yourself. I am full of shit, but I don't think I understand OP's question.

>>5852762
>lift acts parallel to the string

no lift will act perpendicular to to the wind force (or drag)

>what is the green force?
something you invented that doesn't exist

the string will pull opposite the sum of forces gravity drag and lift

>>5852829

OK then. Well, you happened to be right. The kite is redirecting horizontal wind downwards, forcing it upwards. If it were at a different angle it would go in a different direction. Some kites have multiple control lines to do precisely that.

>>5852826
No but i stuck my dick in a vacuum cleaner. My hand dos not hang on a string, i can move and angle it myself. Thanks for trying.

>>5852834
if the forces are balanced then kite would stay at a.
lift is parallell to the string in the picture.

>>5852882
yes it will stay at a

ohh so you want to know what change will move the kite from a to b then?

Well what will move the kite to b is a change in the direction of the wind or a change in the direction of the lift or string force

>>5852898
Wrong.
The weight of the string will make it sag and roll the kite changing the angle of the lift. It will then rise untill the string is vertical and its rolling force is cancelled.

>>5852921
that's what i said nigger the weight of the string is the string force, and a change in the angle of the kite is a change in it's lift direction

>>5852843
>My hand dos not hang on a string, i can move and angle it myself.

It can still feel the force of the wind, dipshit.

>>5852645
hollow earth theory

>>5852925
that´s what u said ginger but it´s wrong, the weight of the string AND the kite and the thrust=delicious string force

>>5852940
I beheld your contribution.

The opposite would work too, if the line was lighter than air it would roll the kite down and end up at c.