Hello,
Mathcad 7 included a software package, Mathconnex, to link worksheets, and data from other sources together. The software provided a drag and drop workspace where multiple worksheet objects could be wired together to solve a problem. It made things like heat ballance and flow ballance...
I think this is a way to reduce vortex shedding. It has been used mostly on airfoils that operate at very low reynolds number.
Remember the Aerobee flying ring toy? It had a little lip spoiler that worked this way.
In the 90's some of the 18 foot Skiff sailboats were using square backed wing...
If you are measuring static pressure rather than line length, don't drop it straight down. Build a glider where the center of lift is offset axially from the center of gravity and the rolling moment always tends to keep the CG down. A vehicle with dihedral wing fins and an inverted vee tail...
What you described is actually a pretty common piece of safety equipment.
http://www.survivalsafety.com/
It is called a Collision Avoidance Radar Detector. They sell for somewhere around $500.
In foggy conditions- exactly the conditions you would really want a radar warning receiver- a...
When a ship is nearly stopped bow thrusters are somewhat more effective than stern thrusters. When the ship is moving faster stern thrusters are far more effective for maneuvering.
When a ship maneuvers, the rudder changes the angle of attack of the hull. The hull then generates a hydrodynamic...
Hi Oceanman,
Can you completely fill the enclosure with a dielectric liquid? This might allow you to simplify the design. If there is no pressure differential between the inside and the outside of the enclosure the structural loads are much less and leakage is less of a problem as well.
If...
This sounds like a network problem to me. Are the files you are trying to access on your own PC or on a network share? If they are on a share, copy all the files to a directory on your own PC.
-colin pitts
Miketo,
What you have described is a very good practice when dealing with large assemblies. This is a standard technique for managing external references and reducing regeneration time. In some software this is called a skeleton model and the sketches are called layouts.
The larger assemblies...
Could cavitation in the inflow be collapsing on the impeller screws? Cavity collapse would be more violent in distilled deairated water than in seawater (more nuclei available in seawater etc.) Was most of the damage on the intake portion of the screws?
-colin pitts
Greg Locock is spot on (as usual) with his comment about environmental regulations.
While I do not think we have any authority to coerce other nations to adopt our labor policies, most environmental regulations need to be universal. If the harm we are trying to prevent is non-localized than...
Hi Bob456,
If you are trying to find the center of mass of a submerged object for statical stability purposes then it will not matter whether the object is in a fluid when you do your calculation or measurement. The center of mass is a property of the body and is the same anywhere. The center...
Several folks have mentioned limiting the number of foreign students who stay in the US after attending college as a positive step toward reducing the loss of US jobs.
This logic seems flawed to say the least.
1) Attending a US university is competitive - only the best foreign students make...
oops..
I said
"The opposite would occur with decreasing pitch attitude."
What I meant was that a moment of the opposite sign would be caused by a decrease in pitch attitude. (sounded like I meant the lift vector origin would move forward)
sorry about that.
-colin
