The first link lead me to this https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1559-3584.1960.tb02385.x. The citation is found in the footnotes of your link.
Given that "The Unintentional Ignition of Hydraulic Fluids Inside High Pressure Pneumatic Systems" by White starts with a description...
We are looking at taking a hydraulic landing gear actuator full with mil oil, draining it, and then using compressed air to unlock and retract the actuator. The pressure needed to unlock the actuator is 500 psig.
So we will certainly have a substantial amount of oil contamination and a...
Somewhere in the deep dark recesses of boxes from my last move lies a thermo text. I am told by the grey beards that if it should ever see the light of day, that a great scourge will fall upon the land.
Looks like I'll have to do some work.
A long time ago, I recall that there is a concern with compression ignition of oil or other flammables inside a pneumatic system if the rate of pressurization was too high. The place that I used to work had really high air pressures. I'm not a pneumatics guy as my day job. My google-fu gives me...
There are good reasons to choose bilateral vs unilateral vs limits of size.
The range in the unilateral tolerance can be mathematically identical to the range in a bilateral tolerance. But the nominal value is different. A nominal value is given with a bilateral tolerance and also with a...
Do you need a macro?
If you are placing the same new part repeatedly, swap all your points for axes and then using a 3D pattern. Position and orientation will be as determined by the axes.
Thanks for all the replies, folks. This gives me something to chew on. The hard part is that I don't want to believe any of it. Like I said, blind spot.
Cheers,
Jason
I applied for level 3 and level 4 jobs with big aero companies who all seem to use that same sort of grading system. Whether or not increased interest skewed towards level 3 jobs with my bachelor's only is more fine grained than I accounted for.
I guess I could make the discussion a little more...
A few years back, I was looking for work. My interview request rate was about 100:1 for the applications submitted. I deleted my master's degree from my resume and my hit rate went to about 10:1.
Has anyone else also made a similar observation?
It is OK to not know something.
This message goes out to all my novice engineers. It might seem like the above statement is anathema to engineers. After all, we are paid to know things. What we do is enormously difficult. No one expects anyone, not even senior engineers, to know everything...
I got hired right away early in my career. A smaller company will move faster than a big company. If you are holding out for a big company, it can take several months. Most companies can't even be bothered to write a small computer program telling you that you were rejected. It sucks.
Three...
Never seen this,but I'm guessing you need to pre-select the correct part body as the destination prior to performing the function. For example, maybe a geometric set is currently selected, but this is a part feature and so a part body must be currently selected before you start.
Balloons (aka find numbers, item numbers, part numbers) are pretty wide open. They really only apply to assembly type drawings. It sounds like you have a detail drawing. I would say no. You don't need a balloon.
What does your organization require? Everybody does BOMs differently.
Automation documentation can be found under Help > Infrastructure > Automation Documentation Home Page. The organization of those help files is different than the rest of Catia. It takes a little getting used to, but it's pretty thorough.
Not sure if that's the same content that ferdo is...
SAE needs to get with the 21st century then. They originally wrote the spec in 1978. They revised it in 2008 so they apparently didn't update their figures then.
Thanks, guys. I'll interpret that as limits. I just wanted to make sure it wasn't some other esoteric thing.
I've never seen this before. This is taken from SAE J1231 figure 1. What does that notation mean on the fillet radiuses of the hose barb? Specifically, what is the 0.50/ before the 2.25R and the 0.25/ before the 1.00R?
Regards...
Try looking in Tools > Options > Mechanical Design > Drafting > Manipulators.
Maybe you could turn a couple things on that would let you move your dimensions around.
Are you asking about a drawing section view or a 3D section? In either case, you are able to modify the section line (plane).
In the case of a drawing view, you double click on the section line and a stripped down sketcher workbench opens. Then you modify the section line as needed.
In the...
I missed dgallup's point and it is valid. The ASME spec you are using requires a minimum dimension. If your model and dimensions are greater than that, then you have complied with the ASME spec.
I personally would still model at minimum though. If you are really worried to get that particular...
