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Designing windmill blades in solidworks

I am trying to design the windmill blades (the green part) in Solidworks but am having trouble since the radius of curvature for the blades varies at different points. I tried bending it as a sheet metal, but am having a lot of difficulty. Any…
rlt
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2 answers

Metal spring thermal expansion

I am attempting to figure out why a laser layout tool I have is drifting over time. It was designed with a small adjustment mechanism that relies on a spring to apply pressure to a fulcrum that rotates the entire laser. A screw is used to apply and…
Cggart
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How do I calculate an estimate for the properties of a composite material?

For a given laminate made of composite material (composed of fibers oriented in a carefully designed sequence coated and embedded in a matrix material), where can I begin estimating the stiffness and/or strength of the material? How can I know…
Mark
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Limits of Injection Molding Regarding Overhung Edges

I'm looking to redesign a seal my company currently uses. The original task was to re-source it from a lower cost supplier with the same design as is in current production. However, the supplier doesn't work with the type of material the seal is…
Trevor Archibald
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Rule of Mixtures calculation

I do not understand something about the "rule of mixtures". Specifically, between upper bound elastic modulus and lower bound elastic modulus calculations, I seriously do not understand what value to choose based on transverse or longitudinal…
user586228
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Why is there limited use of Y (Wye) fittings in a refrigeration system?

I'm a Mechanical Engineering intern currently working in HVAC and Refrigeration for grocery stores. I'm looking into ways, with lower energy losses, to encourage equal flow distribution at liquid pipe junctions. I'm wondering if anyone can give me…
Lamijops
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8 answers

Reducing vibration coming from the floor while at sleep

having an interesting issue here. Imagine you live above some mental dude who starts a vibrating device and frames it against its ceiling - my floor (for your imagination, see example of this at the bottom), or just plays a sound speaker on low…
NightRider
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How do I choose a blower design for an induced draft brick kiln?

I am responsible for a brick kiln in the Punjab province of Pakistan. My government requires all brick kilns to be upgraded to match recent new standards, which include the addition of a blower near the chimney. We consulted with local engineers who…
asim
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What is "per unit strain"?

When I read about stress analysis and specifically in the context of strain gauge, I often see the phrase resistance per unit strain or voltage per unit strain. I understand the electronics and how some of the equations are derived or come about. I…
KMC
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How to select a micro controller for a low power applications?

I am interested in a microcontroller for a low power application. I have been advise to look at MSP430 or Microchip PIC microcontrollers. I also wonder if ARM-Cortex-M0 is a good choice too. At a high level the system will have two analog sensors,…
706Astor
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What is the behavior of unpowered FPGA pins on I2C bus?

The development board for the touchscreen chip we got is too good ;) The chip provides the readouts over I2C, passes it to FPGA (I could provide the model if I find a magnifying glass... but I'd prefer a more generic answer anyway) and the FPGA…
SF.
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What is the term for diagonal bars which are making rectangular frame more rigid?

For example in yellow: if all bars were rectangular, the entige frame would tend to skew. To prevent this, these diagonal bars are mounted. What is the term for them?
Dims
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"Heavy-duty" or not, can my drawer slides really support this weight?

Okay, so recently I got a Dewalt 735 Thickness Planer. It's great at what it does. (It even LOOKS like it's ready to consume the tender flesh of lumber, like some twisted Victorian lumberjack... though, maybe that's just me). Anyway, the problem…
NerdyDeeds
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What is a Tibetan Style Bridge?

The Tibetan Bridge Type I have a question regarding the bridge type called "Tibetan Bridge". Recently close by my home town a new tourist attraction was built, the Highline 179 bridge. It was planned as the longest suspension bridge for…
Stefan
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Part to pierce the valve on a 16g CO2 cartridge and connect to a Solenoid valve

The specific part that I’m after is something that can connect to a solenoid valve and a CO2 cartridge that will break the seal on the end of the CO2 cartridge. The solenoid valve connection is roughly 1/2”/12mm (female, threaded) which is just…
Oliver Nicholls
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