Recent content by Satchmo

I promise we've been working on this since before seeing theirs, but the idea isn't anything too new :). Regarding the "linear seal", I didn't think that would work either, but I thought I'd include it anyways so that it could maybe help spark an idea in somebody else. I'm a little weary...

I'm trying to conceptualize a design for a hydro generator that basically operates by moving an airfoil up an down along a straight path. Most of it is all worked out, except for the issue of water sealing. If you can make sense of my not-so-great drawings, the airfoil is attached to the...

Background: For an oscillating wing that will be used in a tidal generator I am trying to model the position (as function of time) of an underwater airfoil whose movement is limited to vertical motion. The free body diagram is very simple. When the airfoil is positioned for upward travel, the...

I've figured it out. I was assuming that the heating stopped as the valve opened, but the heating continues.

Homework Statement A nitrogen gas-liquid mixture is in a 20 cubic foot tank at a condition of 161 R with an initial quality of 0.1. Heating occurs at a rate of 10,000 Btu/h until the pressure reaches 100 psia. At this condition the BHE safety valve opens and maintains a constant pressure as...

Homework Statement "At the base of a hill (blah blah) there is a ramp inclined with an angle of 30 degrees and has a surface with a coefficient of friction of 1.5. How long should this ramp be to be able to stop a 80,000lb truck traveling at 80 mph" Homework Equations (delta)K + (delta)U...