Recent content by TheEggo

I'm not worried about the bolts failing in shear, it's an interface loads study and I need to know what loads go into the structure. I'm using traditional fasteners. I like the strain gage idea, but I'm unsure where to place the gages. I'm hoping that someone it familiar with a commercial...

I'd like to measure the tension and shear forces on several bolted fasteners during a static test. I've looked at these and similar products: http://www.innovationplus.com/index.php ...but it is my understanding that these are only good for clamping force (aka tension force). Anybody...

Are you free to revisit this? I sent you a private message.

From the article: "High altitude air cooling has always been somewhat of a mystery to the uninformed." I laughed, in this case I am definitely the uninformed. Good find! I wish there was more on free convection rather than forced, but it's a great start for the properties I care about.

This is for an unpressurized avionics bay, making sure cables and components don't overheat at 55,000 ft.

After some digging I've been doing exactly that. Short answer is, it depends on a lot. Long answer is that it depends on gravity, thermal expansion coefficient, kinematic viscosity, thermal diffusivity, absolute viscosity, and of course temperature and density. Has anyone done this before? Can...

Interesting. I had been assuming that the power would be dissipated evenly over the length of the cable. What you said makes sense now that I understand attenuation more. So the front end (power-in end) will dissipate more power. I'm still hung up on the effect of length. Thermal resistance...

I am trying to calculate the maximum power of a coaxial cable, based on heat transfer parameters and limiting temperatures of cable components. I've determined that a certain heat load on the conductor surface (in Watts per inch of cable) will put the dielectric above its operating temperature...

I am trying to develop a spreadsheet to calculate a convection coefficient with altitude as one of the inputs. What variables should I consider? The most obvious are pressure and temperature, but I'm sure there is more to it than that.