A Simple demonstration Showing the Power of Hydraulics

A Simple demonstration Showing the Power of Hydraulics
https://youtu.be/jOGfFeZ3iys

Submitted March 31, 2017 at 08:18AM by aaaaa47
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A Simple demonstration Showing the Power of Hydraulics

Any specific programs to learn that would help with designing a firearm?

Any specific programs to learn that would help with designing a firearm?

After recurring suggestions from an officer friend of mine (due to my ability to use lathes and mills), I'm trying to get into firearms design and development. And while I can come up with base design down on paper, I would like to be able to test out the systems and parts on a 3D program (instead of testing via expensive trial and failure through actually making the parts). I'm looking for a program that allows parts to function independently so that I can see if any portion of my design in specific doesn't work as intended or if it does not function at all.

If possible, I would appreciate if said program had the ability to fully simulate the interaction between the gas fired from a bullet and a gas piston, but I understand that might be a bit much.

Any help or pointers towards good programs would be greatly appreciated. Thank you for your time.

Submitted March 31, 2017 at 08:18AM by SileAnimus
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Any specific programs to learn that would help with designing a firearm?

Daily GENERAL Mega-Thread [Mar 31 2017]

Daily GENERAL Mega-Thread [Mar 31 2017]

Welcome to /r/engineering's daily thread!

This thread is open to all questions, comments, and discussions, especially those things not usually permitted in normal posts:

  • Career advice questions
  • Job offer and job market discussions
  • Resume critiques
  • Office/management/employee topics
  • Questions about school/major choice/course electives (homework questions will be removed)
  • Discussions of current projects, including progress images
  • Pretty much anything you want to talk about that is engineering or job-related is fine provided you follow rules seven (7) and nine (9).

Submitted March 31, 2017 at 06:07AM by AutoModerator
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Daily GENERAL Mega-Thread [Mar 31 2017]

What’s a technique to measure the weight of certain variables?

What’s a technique to measure the weight of certain variables?

For example you have a bunch of data on a bunch of variables that affect something you are studying. What are some statistical methods to measure the weight/impact/or value of each variable to identify which are most important?

Submitted March 30, 2017 at 06:04PM by HKEJHJ
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What’s a technique to measure the weight of certain variables?

How do I improve an AC generator?

How do I improve an AC generator?

Hi guys, recently I've taken up the project of making a hand crank AC generator or a bike powered one. The way I understand it, you need a spinning magnet in the middle with conducting wire coiled around it(like a solenoid). Here are my questions:

  1. Do the conducting wire(rotor) have to spin? I've read some articles that say in an AC motor they do.

  2. What would increase the current or voltage? Strength of the magnet? Length of the magnet? How fast it spins? Number of wire coils?

  3. Does it matter along which axis the magnet spins? Is it fine if it spins along the axis around which the rotor goes? Or should the axis of rotation cut through the rotor?

Any other tips?

Submitted March 30, 2017 at 06:21PM by euronforpresident
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How do I improve an AC generator?

Wikipedia article of the day for March 31, 2017

The Wikipedia article of the day for March 31, 2017 is Cincinnati Musical Center half dollar.
The Cincinnati Musical Center half dollar is a commemorative coin that was authorized on March 31, 1936, and struck by the United States Bureau of the Mint that year. Produced with the stated purpose of commemorating the fiftieth anniversary of Cincinnati as a center of music, it was conceived by Thomas G. Melish, a coin enthusiast whose group bought the entire issue from the government, and who resold them at high prices. Melish had hired sculptor Constance Ortmayer to design the coin, but the Commission of Fine Arts objected to Stephen Foster being on the obverse, finding no connection between Foster, who died in 1864, and the supposed anniversary. Nevertheless, 5,000 sets of three coins, one from each of the three mints, were issued and sold to Melish’s group, the only authorized purchaser. He likely held back much of the issue for later resale, and with few pieces available, prices spiked to over five times the issue price. The coins are still valuable today. Melish has been assailed by numismatic writers as greedy.

Wikipedia article of the day for March 31, 2017