Recent content by Gibsons77

Here's a link you should check out: http://www.uwex.edu/uwmril/pdf/RuralEnergyIssues/aquaculture/90_Air_Lift_Theory.pdf The paper describes an experiment for airlift pumps with small inlet diameters. The theory itself however, still applies. This describes the airlift pump's flow rate in terms...

Right, but all motion is is the change of position w.r.t. time. Since we're talking about methods of generating motion in the engineering forum, than we have to inherently talk about forces being applied over distances. So if we're talking about work (or power) than we can break down the types...

In the most general sense, I think when you say "motion" you probably mean work. In this case, work is defined as a force acting over a distance, W=F*d. The units for this are Joules, which is the fundamental unit of energy. According to several laws of thermo. energy cannot be created or...

I'm an unemployed engineer. Although, I just recently graduated. I have an aerospace eng. degree. I can assure you that their are plenty of jobs out there, and most of them pay really well. If you're just getting out of school (like me), you can't possibly expect to get more than $60k; you're...

Honestly, if you want an accurate answer, you're going to have to give an accurate description. What loads is this thing going to carry? Is it going up hill? A sketch/3d model is needed if you want any sort of accurate sizing. You say you need gearing with 180:1; that's quite the gearing ratio...

Hey guys, I'm currently doing conceptual performance analysis of a UAV helicopter in hover. I'm having some conflicting results however, and if anyone could help me out, that would be great. Here are some of the basic design constants I'm working with: GTOW: 95kg κ = 1.15 (induced power...