Questions tagged [design]
The design tag has no usage guidance.
264
questions
1
vote
1answer
39 views
Could boiling water inside a semi-enclosed pipe be a low-cost method for a silent marine propulsion system? (redesigned)
I am wondering if boiling water that is trapped inside of a semi-enclosed pipe would be a low-cost method of creating an underwater thruster that would function as a silent marine propulsion system.
...
0
votes
1answer
19 views
ANSYS Design Modeller more significant figures
I need to just get the volume from ANSYS Design Modeller but I would like a higher number of significant figures rather than just 5 (See picture).
How do I do this?
Thank you for your help!
0
votes
0answers
21 views
How to detect milk spillage or milk boil?
In my country we generally boil milk before we drink. Often the milk heats up and spills from the pot. I want to detect milk boil before it spills off.I am thinking of a thermal camera solution that ...
0
votes
2answers
51 views
Designing a 1-button system allowing for a differentiated control of 2 different valves?
I'm in the processes of building something which requires I'll be able to control the independent opening/closure of two (small, ~10mm in diameter) different adjacent holes using one finger, and I'm ...
0
votes
1answer
19 views
Master/Slave Gear Mechanism for Navball
I am designing a functional replica of the Apollo FDAI (aka 8 ball).
See pics Real FDAI Another view
From the Apollo 8 Flight Journal:
The FD/AI (Flight Director/Attitude Indicator) or "8-ball" ...
0
votes
0answers
16 views
Designing Block Diagrams For Control Systems
I'm looking for good software to design control systems, and more specifically to neatly design "block diagrams" for control systems.
Is there something like that?
0
votes
0answers
15 views
Help finding connector to fit 1 3/8in / 35mm mounting flange on horn driver
My project is a DIY talkbox using Monacor KU-516 compression driver.
I'm having a hard time finding the right connector to fit the hose to the driver, M35 is a rare size it seems.
There's one ...
0
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0answers
58 views
Machine Frame Design
How do I select the cross section for a machine frame? Do I need to refer to the AISC steel construction manual to find the capacity of beams, columns, etc?
2
votes
1answer
19 views
Spring Industry Naming Convention
I am currently prototyping a part for a personal project. My CAD design was contracted out and there are some off the shelf parts that I need to order per the design (springs, screws, etc.).
My ...
0
votes
3answers
26 views
Design of Gating & Runner system in Gravity Die Casting
How to design gating and runner system in permanent dies so that material flows smoothly throughout the design without spilling back from the gating channel.
What should be the shape of gating system ...
0
votes
1answer
19 views
Bonding PVC Cables To Metal Housing
I have thin, variable diameter PVC wires that run along a metal housing. Problem being, they can get pulled on and disconnect. I want to bond them down to the metal housing as a sort of strain relief ...
-1
votes
1answer
43 views
How do i find the effective length factor (k) for a column from this chart?
I need to find the effective length of a column (kl) from this chart which can be found in the "design of concrete structure" By Dr. Arthur Nilson.
the question states "if Psi top is 1.5 and the ...
0
votes
1answer
15 views
Selection Of coupling and determining size of motor to rotate heavy disc
Following image is something I want to design. The uniform stainless steel round plate of diameter 1000mm and thickness 10mm is rotated by a stepper motor. But after every turn, a pressure of 3000 kg/...
3
votes
0answers
49 views
What mechanism do I use for this pen-like design?
I am trying to make a pen-like product that moves out fluid from its tip for some special chores, but I am having issues about the motion of the clutch. The picture you see is a sectioned concept ...
-3
votes
2answers
81 views
Would an aeronautics-type air brake be an effective means to help bring a car to a stop? [closed]
If an automobile was to deploy an aeronautics-type air brake every time the brake pedal is used, would this be an effective means to reduce wear and tear on the car's brake rotors and pads?
I think ...
2
votes
1answer
42 views
Buckingham-Pi Dimensional Analysis when there is a non-dimensional parameter: How is it accounted for?
I am in the process of completing a design project for my fluids course in which Buckingham-Pi /Dimensional Analysis is needed to find the optimal parameters needed to achieve a rotational rate of 120 ...
0
votes
1answer
61 views
Pneumatic-based, paddle wheel-type lifting apparatus for aircrafts
I am wondering if a pneumatic-based, paddle wheel-type lifting apparatus would have any practical application within the aeronautical or aerospace fields.
Please reference the conceptual drawing ...
1
vote
3answers
67 views
Dead mans brake on a hand-pushed wheelchair
Would it be possible to install a dead-mans brake on a wheelchair?
I have been calling around and wheelchairs do not seem to come with a dead-mans brake. With that i mean the brake found on airport ...
0
votes
1answer
37 views
Use 4 to 5-second timer to disengage/engage mechanical system
So I am working on a project. I need a drone (quadcopter) to ascend for 5 seconds, then cut off power to the drone, then let it stay in the air for as long as possible without power. My idea for ...
0
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0answers
29 views
How to change the direction of the force with a high resolution
I have a sample of 600 milligrams which is supported by a rope. So the force is in the vertical direction. Now I want to change the direction to the horizontal direction while keeping the force equal(...
0
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0answers
26 views
Will a video projector submerged in mineral oil still work?
I’ve seen folks submerge computers in mineral oil to cool them- but would doing the same to a video projector profoundly throw off its internal optical aspects? I’m considering one of those small “...
0
votes
1answer
42 views
Why vehicle horns are tuned to consonant intervals?
The primary purpose of a vehicle (car, locomotive, etc.) horn is to warn other traffic units that something potentially dangerous is about to happen. And so, others must pay attention to the signal.
...
5
votes
1answer
58 views
Should the corbel angle always be estimated as 60 degrees in masonry construction, or is there a formula to use instead?
In educational construction material as well as engineering publications, the corbel angle for significant excess loads, and also for substantial openings, in an ordinary brick wall is usually ...
0
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0answers
39 views
Design assistance
How do I make that encircled pattern in AutoCAD 2018 without going through a lot of hassle? I mean those thin lines indicating that the object has been cut.
Looking forward to all positive responses.
...
0
votes
1answer
57 views
Regarding design of fixation of a part
I would like to know if there is any theory behind designing the fixation for any part. To optimise the number of mounting holes and fasteners.
If so what is it called and where can I get it?
Please ...
0
votes
0answers
28 views
Screw Cap design for high pressure surge vessel
I'm designing a pressure vessel with a relatively large cap that provides access into the vessel, what recommended thread specifications is needed to maximized locking and safety against faliure or ...
0
votes
1answer
27 views
How to model a driven wheel with no slip
I'm working on a design problem, and I'm having trouble figuring out how to model the torque needed to drive a bike tire at a set acceleration.
Let's say I have a tire with normal force between tire ...
0
votes
0answers
30 views
Designing a submersible cooling system for rapid flow hot nitrogen gas [duplicate]
I'm trying to design a cooling system for cooling nitrogen at 300°C. My original design (which is very open to modifications) is an aluminum ring block with exterior fins and vertical holes through ...
4
votes
3answers
104 views
How are dangerous to build things studied?
How are dangerous to build things studied?
Such as, nuclear reactors, jet engines, sawing machines.
How do engineers discover, how they ought to be built, while avoiding getting or getting others ...
0
votes
1answer
45 views
Designing cylindrical cam
So I need to design a cylindrical cam (aka barrel cam I think). I'm an aerospace engineer so I've never had a course on cams/gear design (wish I had though). Is there a general equation for the curve (...
0
votes
1answer
33 views
How to get precision with a small gear?
I want to be able to precisely rotate a item. For this I have positioned the item on top of a very large gear. It is driven by a smaller gear. When the item is in the correct position, I will lock the ...
0
votes
1answer
36 views
Issues creating a high pressure chamber for corrosive solution
I'm trying to do an experiment on high pressure's effect on the electrical impedance of a really corrosive solution. I'm aiming for at least 2,000 psi with a pressure chamber but the only material I ...
0
votes
3answers
59 views
Cheap low-temperature oven
I'd like to make an oven for curing adhesives that require an elevated temperature for a proper cure. I'd like for the temperature to be settable from 60 degrees C to 75 C plus or minus 5 degrees over ...
-1
votes
1answer
83 views
Could a spinning permanent magnet's interaction with the Earth's magnetic field propel a boat through the water?
I am wondering if a spinning permanent magnet's interaction with the Earth's magnetic field will produce a propelling force strong enough to propel a toy boat through the water. This propelling force ...
0
votes
2answers
73 views
Racing cars have spring with constant rate whereas Off road vehicles have variable spring rate [closed]
In the term of machine design and mechanical engineering.
If same spring is to be used in both smooth and rough road what will be the effect in suspension of the vehicle and if instead of using same ...
2
votes
0answers
40 views
Why do transport containers for wafers open clockwise?
In the semiconductor industry and research, silicon wafers are transported in round plastic sample containers with a screw lid.
Other than any other screw top though, the lid always opens (releases) ...
1
vote
0answers
66 views
Question about how to couple round servo shaft to flat shaft
I'm looking to control a commercial deadbolt using a small servo, motor, or gear motor. The deadbolt has a common Schlage cylinder such as this one that has a flat shaft that runs through a slotted ...
1
vote
0answers
31 views
Designing a piston pump for windpump
I am designing a savonius type wind pump for low wind speeds(avg speed = 2.7 m/s), with these speeds and rotor area of about 2 m2. Acc. to my calculations, I am getting a volume flow rate of ...
0
votes
2answers
35 views
Connector for sliding plate to rotating rod
I want to couple a plate, which cannot rotate but only slide along a track, with a threaded rotating shaft. This is for a grip setup, where rotating the rod presses the plate forwards to apply ...
2
votes
0answers
34 views
Force exerted on the CPU socket by heatsink
I am currently designing a replacement bracket for AM4 CPU coolers that will be compatible with different cooler models and allow them to be installed facing different directions, as AM4 socket is non-...
1
vote
0answers
32 views
what is the chance of sustaining load if beam is 20 feet long? [closed]
what is the chance of sustaining load if beam is 20 feet long as center pillar of house is removed in first floor and added 20 feet long beam with 20 mm rods in RCC beam?
House details :: 30*40 sq ...
1
vote
0answers
29 views
Tolerancing considerations for temperature rated mechanical assemblies
I am currently designing a mechanical tensile testing setup to operate at different temperatures (-20 to 100 C) in a wet environment. I plan on machining two sets, one from stainless and one from PMMA....
1
vote
3answers
83 views
Why is the rear wheel of the Penny-farthing so small?
I see a lot of people asking why the Penny-farthing's front wheel is so big, and I think I've read enough materials to understand why (at least, at the most basic level). But even so, I feel that the ...
1
vote
1answer
58 views
Coating brass components cheaply
I have seen a number of products made of brass with a silver-looking coating covering the brass on the outside. These products are all quite cheap (for example a small watering can or clothes hooks). ...
0
votes
1answer
285 views
What are functional and manufacturing datums
Can somebody please explain what is ment by functional datum and manufacturing datum, with respect to dimentioning and tolerancing.
0
votes
1answer
113 views
Drawing an isometric from a multiview
I'm very new to designing shapes in multi views and drawings and got a homework problem on this. I have to draw an isometric from this multiview drawing. I have no clue where to start and am not ...
2
votes
0answers
39 views
High Pass Filter Design from Transfer Function
I need to design an active high pass filter circuit that implements the following transfer function:
$$G(s)= 4.15\times\dfrac{s+530}{s+2200}$$
where, $K = 4.15$, Pole @ 2200 rad/s and Zero @ 530 rad/...
3
votes
4answers
120 views
Engineering Solution for river cleaning
Sorry if this is the wrong exchange, if it is could you point me in the right direction that'd be awesome!
I have a bit of a problem locally that I think there could be a simple solution that we're ...
1
vote
0answers
73 views
Books and resources for an entrepreneur inventor? [closed]
What books would you recommend for an inventor entrepreneur?
3
votes
0answers
32 views
Required diameter for ballast drop hole? [duplicate]
I'm currently an underground Geotechnical Engineer, don't spend a lot of time on the surface. I'm trying to find a reference or method for calculating the required diameter of a service hole. My Mine ...
