# Flak

Senior Members

84

• Meson

10

1. ## Question on quad planes in XYZ coordinates

Please can you explain me how to use that ecuation in the indicated question (align of the point to the plane)?
2. ## Question on quad planes in XYZ coordinates

Ok I agree, I used the term "quad plane" to explain that type of plane. How the ecuation ax + by + cz = d is used?, let say in the plane the values are (just any value as example): Point A X = 23.5 Y = 10 Z = 20 Point B X = 10.6 Y = 5 Z = 2 Point C X = 35 Y = 20.2 Z = 14 Point D (the one I want to aling to the plane by moving it on X or Y or Z) X = 4 Y = 46 Z = 52.4

4. ## Question on quad planes in XYZ coordinates

Ok is difficult to explain and this board do not allow uploading. You have 3 points in an XYZ enviroment, that create a plane, lets call it 3-plane because it is made of 3 points. You can move any of the points at any place on XYZ and will still have a plane. Now , you have 4 points on an XYZ enviroment, that can create a plane, lets call it quad plane because is made of 4 points. If you move any of the points in XYZ you will get a 3D surface. I indicated that it can create a plane because if the extra point is correctly aligned that will create a planar surface. That extra point can be moved on X or Y or Z to be aligned. Then the info is XYZ values for 3 fixed points that already create a plane, and the value XYZ of the point that need to be aligned to the 3 fixed points to create a planar surface by change its X or Y or Z value.
5. ## Question on quad planes in XYZ coordinates

Quad Plane: a plane made of two triangles (wich is know as plane). You can move a point on a plane to any position and you ever get a plane, let say a planar surface. However on a quad plane you move a point and you get a 3D surface, so the task would be move that point on X or Y or Z to get back a planar surface.
6. ## Question on quad planes in XYZ coordinates

As we know, 3 points define a plane at XYZ, if you add another point then you create a 3D polygon. My question is that if there is a way to align the new point to the others so you can create a quad plane. The info: 3 points with XYZ coordinates (base plane) 1 point with XYZ coordinates wich have to be moved on X or Y or Z to be aligned to base plane and create a quad plane.
7. ## Ignition colors of elements

It dont show about Al or other metals but thanks.
8. ## Need info on kinetic

Ah yes, the range it could be up to 1000 meters, altough the common range will be under 500 meters.

10. ## Need info on kinetic

Yes, but oriented on the relationship between weight and speed.
11. ## Ignition colors of elements

Yes thanks, what about the speed? Im just talking about WW2 tracers altough I dont know how they worked.
12. ## Need info on kinetic

http://jersey.uoregon.edu/vlab/KineticEnergy/

14. ## Need info on kinetic

I want to determine the kinetic force of WW2 aircraft MGs.
15. ## Ignition colors of elements

Hello, I want to know the color of the different elements when exposed to hight temperature. By the moment I´m interested on the mix of Mg Al O, and how it can change depending on the % of each element.
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