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1. "Airplane Performance, Stability and Control" by Perkins and Hage. http://search.barnesandnoble.com/OopBooks/OOPResultsTitle.asp?userid= 1A31Z2S75B&sourceid=00006429227290318594&bfdate= 02%252D23%252D2004%2B14%253A15%253A37&WID=49100283&price=...

The old solid desiccant dehumidifier (Cargocaire) vs liquid desiccant dehumidifiers (Kathabar) controversy. Quark ....good points. Back to the original question of 20% glycol, it sort of comes down to maintenance costs of desiccant wheel change out 10 years down the road and energy required...

Friends, I need help. I'm trying to calcualte the amount of force required to overcome the hinge friction on a 36" wide x 84" high x 1-3/4" thick steel door weighing 141 lbs. I have calculated the torque created by air pressure differential and have worked out the door closer...

sfxf Minimum condensate drain size: 0-20 tons.... 1" 21-40 tons.... 1-1/4" 41-60 tons.... 1-1/2" 61-100 tons... 2" 101-250 tons... 3" 251 & larger... 4" AC condensate flow... Range: 0.02-0.08 GPM/ton Average: 0.04 GPM/ton Unitary Packaged AC...

sfxf Tell me when your going to turn that air handler on, we can check with the National Geologic Event Agency and see if they record any seismic activity on their equipment. Is that for a wind tunnel ? I hope your ductwork don't colapse and get sucked into the fan. Sorry about the jokes...

1/2 psig = 27.72 / 2 = 13.86 inches water gage

0.5 inches water gage = 0.5 / 27.72 or 0.0180375 psi

IRstuff Your saying 6 degrees, 3 (linear) translational and 3 (Angular) rotational. Is that (3) accelerometers for (linear) translational and (3) gyros on some sort of fixed stable mounting (platform) ? Thank you, Wilg

The frequency of oscillation of a gyrocompass is dependent on latitude, as a gyrocompass nears the north polar axis, what effect does that have on the oscillation frequency ?

How many degrees of freedom must be sensed by an inertial guidance system to establish motion of a rigid body through space ?

I have seen R134a used more than anything else, check with suppliers, look at the pressure-enthalpy charts, and review the costs involved.

Imok, Answer to your questions.... 1, Do you use this method in your calculations? Carrier seems to be the only Manufacturer that uses the Apparatus Dew point as part of their coil selection, they include a bypass factor, which is the psychrometric difference between the actual discharge...

IRstuff Thank you....for the answer additionally... Will the ratio of velocities be greater for the inner orbit, (greater than 1/1) thereby requiring additional thrust ? Is this considered to be a minimum energy transfer situation? Which is greater thrust required to escape from the...

Can a transfer between co-planner orbits be effected by an elliptic orbit with perigee and apogee distances equal to the radii of the respective circles ?

Carrier indicates Aparatus dewpoints in thier System Design Manual, page 1-145..table 65. As Imok points out plotting the points out to the saturation line is the established traditional method and that's the indicated ADP, the indicated represents the lowest effective sensible heat factor...

plasgears There's a whole lot of "unconscionable" going around. Managing engineers with non-professionals is more the norm than the unusual. Rob45 Don't jump from the frying pan into the fire, and don't take less money in your next job. Be careful with promises of future...

dchesky A place to start.. Heat... Mechanical contact with something.... Chemical (as Imok commented)........ Manufacturing flaws (loose impellors, housing imperfections) Improper installation..... Coupling misalignment..... Did the impellers appear to have been chemically...

Hey Imok, Good web site, Thanks.

Go with first part of A.