![]() |
#4
|
|||
|
|||
![]()
On Sep 21, 12:46*am, "Val Kraut" wrote:
science is all modelling, speculation and done in cubicles in research centers,colleges and so on. Not just science - there was a time that an engineer designed something as best he/she could and then followed it through the fabrication, test and utilization cycle to better fine hone futhur designs *Engineers weren't divorced from the shop where things took shape. They understood the basic relationships between elements of the design and optimized accordingly. Today engineers pump numbers into a computer and accept the results as gospel. True case. An engineer was selecting vacuum pumps that were located around a chamber. The two models available were 750 liter/minute and 1500 liter per minute. The computer simulation of the layout gave 900 liters/miinute as the required pump rate. So they ordered the bigger 1500 liters per minute units. But a simple examination (or understanding) of the model showed that the pipe length to the chamber was a direct term in the basic equation. Moving the pumps closer to tyhe chamber would have made the smaller pumps more than adequate. In may cases modeling rituals have replaced basic engineering *The computer programs become the Guru and not just a computational aid. I've also seen cases were a young engineer talks about something he/she designed. When you ask how it worked - you get an answer like - I guess it was OK - they built it and nobody complained. The touch with reality is getting less and less with time. * * * * * * Val Kraut In my line of work where it is important to maintain standards of workmanship (otherwise things blow up !),the best engineers are the ones who ask why some process or some ad hoc innovation was done one way instead of some other way,if they like the explanation they allow the innovation to proceed,if not they will sanction a different approach.The point is that men who take a wider view and are not afraid to ask questions tend to have a more balanced approach to everything else and in some ways the loss of the space program or any sort of human adventure,it could just as well be a new type of maritime exploration,requires men who can see the bigger picture but unfortunately that is rare today.Now it is all highly speculative guesses about the universe that exist only in mathematical modeling with the idea of sending satellites into the celestial arena to prove or disprove a model,no bravery or sense of danger involved and no sense of human achievement. |
Thread Tools | |
Display Modes | |
|
|