Newest Questions
17,063 questions
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i'm having a problem interperting a drawing
i'm having a problem with interperting this drawing which i found in CSWP preparation book from Ryan Lee. if you look at the first image you see a triangle like shape with an inner offset(it's going ...
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Would an elongated rocket launch tube 'now' be feasible and economical?
The general idea is to make rocket launches far more economical than they currently are... maybe even within eventual affordable range for the general populace! The goal of a tube is to significantly ...
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Locking the knee of my milling machine doesn't reduce clearance / movement in the knee when moving the table
When I move the table on my mill (Bridgeport clone) in the X axis over the entire travel, a dial indicator mounted on the knee ways against the column ways reads a 1 thou movement, and similarly when ...
- 111
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What does lever on side of drill press do?
Mastercraft 15-inch drill press purchased 10-15 years ago; no manual.
What is the intended purpose of the silver 3-inch lever on the righthand side of this drill press?
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Robust control problem ( reference tracking with Uncertainy handling)
I am facing some issues while designing a robust controller. I have attached the frequency responses of the nominal system and the closed-loop system with the controller implemented. I have also ...
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How hard are welds compared to mild steel?
I had a local welder weld a 3/16-inch thick plate to 1.5-inch square bar. All hot rolled mild steel.
I tried to grind off a part of the welded plate using a thin cut off disk. I don’t normally use ...
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Mass Flow Rate of Cold Water Pump in a Heat Exchanger, I think my study material is incorrect?
I am currently doing an assessment, and I believe the study material I have been given by the training collage may be wrong. Obviously, i need a second opinion and struggling to find a good example ...
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Fabrication : recommendations for a metal saw
I'm interested in your thoughts and experience on general purpose saws for fabrication.
I currently have a cold cut circular saw which uses HSS blades with suds blade cooling It is however getting ...
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Spur Gear Rotation Repeatability
ES,
I have a #10 Spur Gear Application. I am looking to find out the repeatability of odd tooth pinion to odd tooth gear. The process it goes to, is looking to have as many rotations as possible ...
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Surveys of empirical overall heat transfer coefficient for houses
I am looking for a survey of empirical heat transfer coefficients for typical houses in the United States. I do understand that heat transfer coefficients can be calculated by various means for ...
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Diamond abrasive grit size
I'm looking to purchase diamond abrasive online & I need to select the proper grit size. I figure I need about 100µm (microns), which, as far as I can tell, is close to the diamond grit size in ...
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Timing of a Single-Clock Sequential Logic System - Data Corruption?
I'm going through MIT's open courseware course 'Computation Structures.' The image below has caused a bit of confusion for me. I've learned how each register is made from a pair of D-latches called ...
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How to Optimize Fractional Factorial Designs for Water Pressure Prediction in Irrigation Systems?
I'm developing an irrigation system that predicts water pressure based on the binary states (open=1, closed=0) of multiple valves (3 to 8 valves) using an ESP32 microcontroller, pressure sensor, and a ...
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Hydraulics: Forced flow in a pipe exiting to atmospheric pressure. Where does the pressure head or "pressure energy" go?
Consider the following "system" (adapted from the book Hidráulica Básica - 4ª Edição - Rodrigo de Melo Porto):
Consider that the fluid is water, and that water is incompressible. (Of course,...
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How is there 'sagging' in the bottom chord of a truss without bending?
When performing models of trusses, typically we model it as a serious of members with pins between them.
The sagging shape in the pinned model is possible due to the rotation of the elements at the ...
