Day 15 - Test Pneumatically

Today you want to test as many aspects of your hydraulic arm as you can. TAKE NOTES. You will need to document changes from your technical drawing and changes from your initial prototype. Take photos of your prototype as it exists today. At the end of the unit you will need to have photographs that illustrate the differences between your initial prototype and your game-day prototype. As I mentioned yesterday in class, I plan to hold on to the two best hydraulic arms and set them up on display during Festival of the Arts this year. If we ever build a display shelf for the window wall, I plan to put these things on permanent display up there, too.

Hydraulic calculations

1. calculate the area of a circle (A_circle = πr²).
2. calcuate the mechanical advantage of a system (M.A. = F_out/F_in)
3. know that in general, output distance traveled must be multiplied by M.A. of the system to know input distance traveled
4. calculate the volume of a cylinder (V_cylinder = πr²h)
5. calculate the radius of a circle given its diameter (r = d/2, or d = 2r)
6. know that in general, M.A. = F_out/F_in = A_out/A_in = Δh_in/Δh_out

hydraulics

the branch of engineering concerned with the conveyance of liquids through pipes and channels, especially as a source of mechanical force or control.