I have an application for a US Navy project where we need grease for a lead screw with a manganese bronze nut and stainless steel screw.
This is for a ship that will be in salt water spray environment.
We have been using superlube PTFE grease but the starting torques are too high in the cold...
specifics of one of the antennas:
Antenna #1
. Frequency: 9.2 GHz
. Bandwidth requirement: ± 20 MHz
. Input Power: 80 Watts Peak
. Average Power: variable, but highest is 0.7 watts
. Input port: SMA Female
. 4 hole threaded mounting on back
. Azimuth Sidelobe levels...
I contacted the universities research departments. They wanted $50,000 to $65,000 just for the design. I had a commercial quote for $50,000 to design and prototype.
I was hoping somebody with the right software could design the channels and slots and centerfeed and we could make the antenna...
I am a M.E. but my company is looking to outsource the design for a 9.2GHz planar array antenna.
We can make the antenna, we are just looking for someone to do the design. Does anybody have a source?
Obviously there are alot more details but we are just looking for a place to start.
I...
We are looking at integrating a laser onto a robot for cutting thin plastic but we know almost nothing about lasers.
Is there a company that makes a laser that feeds thru flexible fibers? It seems everybody we have talked to so far uses mirrors. Definately not optimal for robot integration...
We had a really basic testing setup. Not at all calibrated.
We are machine designer type engineers, not HVAC type guys.
but, we used a blower with about twice as much flow as required and measured about 0.2 to 0.25 inch WC differential with a homemade manometer.
Couldn't have made a much...
How do you calculate the pressure drop accross a wire screen mesh with the following parameters?
Air Flow, 68inch/sec thru a stainless steel woven wire screen mesh, #6 mesh, (0.12inch square openings) with .047 wire which is 51.8% open.
The numbers we calculated using the ASHRAE methods seemed...
