when we used double acting actuator and when we used single acting actuator?
Category Archives: Aerospace
Microscope Camera Software (Moticam and Leica)
I am looking for software to view and capture images from 2 microscope cameras - a Moticam 2000 and a Leica DFC 400. I don't have the original software that came with the devices.
Can you recommend a good, free, software package to simply view and capture images from both these systems?
Revolving Platform Update
Hi all. Here is as promised an update on the revolving platform. thank you again to all the help and input you guys gave. I will post some more photos of the complete platform in action on stage when time comes. Feel free to ask questions.Still busy sorting out small snags one being how to get it to
Math Puzzle
2+3=10
7+2=63
6+5=66
8+4=96
9+7=?????
Square Head Machine Bolts for Pipe Bolting?
Here is the question at hand: can square-headed bolts be used for connecting flanges? If they can be, is it advisable? What is the advantage / disadvantage of using square-headed bolts v. using hex head bolts in this application? I typically see hex heads in used to bolt up, which is why I'm asking.
Calling All Heat and AC Gurus
Greetings - my compressor on our 2.5 Ton Lennox split system is going out (10 seer)- trust me, The charge is good, but with the screwdriver-to-the-ear test, can hear the valves slapping - it's going away & working too hard to suit me..(no cycle-off)
scenario - existing - R22 replace
The AirRay Auto
And they just keep on coming! Here is an automobile which has several wind turbines built in to harness wind energy as it is driven, and a solar-cell roof. It is supposed to be so efficient that you'll be able to supply power to your house or to the grid when parked. I see a few names listed for
Chemical Mixtures
Hi Guys,
I am writing in hopes to get a 3rd opinion as to if I can put different chemical mixutres down the same industrial drain. I am in progress of asking 2 professionals but I thought I would see if all opinions jive.
The mixtures in peticular are: 1) H2SO4(96%),HCl(37%), H2O2(30
Starting Torque of Passenger Vehicle
HI to all !! i want to know the starting torque of passenger car? i mean if mass of vehicle 800kg then how much torque required to move the vehicle ?? As we all know at first gear torque is maximum to move on the vehicle!! but i know the value of torque !! & also want to ask how it is calculat
Sourcing a Scale
Can anyone tell me if there's a company like Starrett or Mitutoyo. That makes a scale that's the normal 6 inches in length, but graduated across the ends rather than the length of the scale, to access tight spaces. Also needs to be graduated in 10ths and 100ths.
Pentagon to Use Algae as Jet Fuel
"The brains trust of the Pentagon says it is just months away from producing a jet fuel from algae for the same cost as its fossil-fuel equivalent.
The claim, which comes from the Defense Advanced Research Projects Agency (Darpa) that helped to develop the internet and satellite navigation sy
Potential Solution for Storing Nuclear Waste
= GE Hitachi's Answer to Nuclear Waste =
The maker of nuclear power plants is promoting a process to use the waste as fuel.
By Kevin Bullis
Wednesday, February 17, 2010
GE Hitachi Nuclear Energy, one of the world's biggest providers of nuclear reactors, says it has a
Web-Based Control and Monitoring of Siemens PLCs
WEB BASED CONTROLLING AND MONITORING OF Siemens's PLC i want to control and monitor a process , that process will be control s7-300 siemen's PLC. can any body guide me about how i m remotely access the Process. Is LabVIEW good for that or Wincc????
Washing Machine Solenoid Question
from the U.K.
Washing machine hot fill.
My wife has just brought a new clothes washing machine. But it only has a cold water fill and the solenoid's are all connected together on this cold water supply.( There are 3 solenoid's to the one fill point). My first thought was to fit a
Hardness of P91 Material
can you please tell me the hardeness of the p91 material and alsothe main chemical as well as the physical properties of the above mentined material
Sonar High Frequency Piezoelectric Device
Hi every one!
I just suscribe to this forum because I have some questions about a project I have to do with my school. I have to think about and make a SONAR high frequency [20kHz - 150 kHz], with a bandwith [10 - 20kHz]. Well I'm a little lost, first of all i have to think about the equi
Heat Tracing Cable for FRP Dual Containment Tank
Hello everybody!
I cannot find a supplier in North America for submersible heat tracing cable. We are trying to keep a FRP tank (10'-0" diam.) above the freezing mark (~ 5 deg C). Outside temp. could reach -30 C.
Because it's a dual containment tank, the cable will come in contact
1999 Honda Accord – No Heat, No A/C
I have a problem with the air conditioning and heater not working at all.
I performed a basic check of the problem:
Check all the fuses under the hood, and inside the car, they were all OK, check to see that the compressor was turning, and that the belts were not broken, everything
How to Tell If You're an Engineer / Automotive Type
If you are then this will crack you up: http://www.youtube.com/watch?v=pbVY5teBzlg
If not then it will sound just like the gobbledygook we technical types use in ordinary discourse.
Motor Poles and Maximum Efficiency
The load is a positive displacement pump (constant torque load)
The operation speed is 1271 RPM and the HP to the load is approx 9.2 HP. The pump manufacturer has narrowed it down to two motors for the pump. 6 pole 15 HP and 4 pole 20 HP.
We are using premium efficiency motor for o