Nice
How about some biometric forms.
Mostly from prepreg carbon twill robot weaving.
I reckon there are some large radius rigid shaft weaves @dougselsam could get a few MW through
Nice
How about some biometric forms.
Mostly from prepreg carbon twill robot weaving.
I reckon there are some large radius rigid shaft weaves @dougselsam could get a few MW through
I do see why not? I looked a something similar myself for anode for an ion thruster. I was dreaming magic carpet at the time. That was wind round nails and tried to weave it in to a carpet. More a case of right idea wrong approach. I can see this behind advantageous us for a number of applications. Aerospace and space flight being prime examples.
Nasa current has very small scale hall thrusters. something like the chainmail or biomimetic structure would do the job. You would be talking supersizing current space technology. Maybe interplanetary missions with a large crew? If done right it can act as a heat shield? Store solar energy? Blanket the ship in warmth, by capturing particles from the solar wind.
Added bonus it would be incredible lightweight and strong. A balance of rigidity and flexibility. Which would help out with space debris to a limited extent? I can see the whole skin of the vehicle made from it. Bot printers as they are have come along way. You even had the 3D printed bridges.
Nice vid show the whole process in action.
Huge fan of architecture. Something like this rival even the greatest cathedrals. That in itself is no mean feat. It almost calls for a space dock? Wide scale expansion into many sectors. I wonder where the funky designs for skyscrapers were coming from? now I know. Many thanks!
got to say the Eden project is a worthy mention. Been in awe of that ever since it was built. To think its inflated cells held up? is amazing in of itself!
https://www.reddit.com/r/FreeCAD/comments/xm0mz8/designing_my_robotic_humanoids_hip_is_really/
https://www.reddit.com/r/Futurology/comments/xsxnqv/the_uss_national_renewable_energy_laboratory/
https://www.reddit.com/r/MachinePorn/comments/xywxxs/tying_machine_mechanism/
https://www.machinedesign.com/motors-drives/article/21833481/flexible-rotary-shaft-operation-uses-and-advances
Flexible shafts are surprisingly complex products whose behavior is not easily predicted by simple calculations. Recently, Dr. Adam Black, an expert on flexible-shaft design, developed mathematical models that help solve this design challenge. They are used as the foundation of engineering software called Perflexion, which models the behavior of all the wires within the shaft.
https://www.reddit.com/r/AskEngineers/comments/ye47yo/where_is_a_good_place_to_learn_electrical/
Despite only about 25% of car travel happening after dark, almost half of fatal accidents occur at night. As our vehicles become more advanced and even autonomous, the ways of detecting and avoiding these collisions must evolve too. Current systems...
More information: Darsith Jayachandran et al, Insect-Inspired, Spike-Based, in-Sensor, and Night-Time Collision Detector Based on Atomically Thin and Light-Sensitive Memtransistors, ACS Nano (2022). DOI: 10.1021/acsnano.2c07877
Journal information: ACS Nano
Provided by American Chemical Society
Plagues of locusts, containing millions of insects, fly across the sky to attack crops, but the individual insects do not collide with each other within these massive swarms. Now a team of engineers is creating a low-power collision detector that...
More information: A low-power biomimetic collision detector based on an in-memory molybdenum disulfide photodetector, Nature Electronics (2020). DOI: 10.1038/s41928-020-00466-9 , www.nature.com/articles/s41928-020-00466-9
Journal information: Nature Electronics
Provided by Pennsylvania State University
Not quite sure how a toroidal prop translates to Awes of Similar nature?
By design it looks like VAWT?
1481.54 KB
mit labs have looked at these for drone props?
I wonder what you guys think?
Ha ha were you watching the new fan showdown series on Youtube too?
I submitted a 5 blade remix version
Well It cropped up in my feed? I had made a similar design months back sent it to him heard nothing back? sent the stl file some months back? This cropped up? It just looks like the squashed tube function on Tinkercad? Then rotate the blades to require angles? I sent 8 or 12 blade in some point last year? Found it odd? As mine looks vaguely similar? I feel like a demon possessing the other engineering bod? Find it funny people it looks like people try rob from me? I had no idea if anyone had toyed with this before? I wonder if I could get something for my efforts? Could really use it right now? As I donāt know the origins? I wonder if they figure about the source code issue? As every Tinkercad cad file is link to the designer? Glad to of had an impacted if true? He must of made a mint from that stl. File? I wasnāt expecting much at all? When I sent my fan in to the fan showdown?
If I did design it and mit got hold of it? Thats a win in my book! Looks valuable enough to investigate? I wonder how Iād get a credit? Most of the source code canāt be modified? Due the legal stuff? Its like a big no no! Gdpr? It could be convergence thinking? But who knows at this point? Even 1% would do me? That would be modest royalties? Say the businesses using the design earn a few million? 1% it fairly healthy income for someone like me? It mighty strange it landed in my lap? Went away thought nothing of it? Till today? 10k would get me off the state at a time the support is due to collapse? It was along time back when I sent my stl in?
I know Iām open source? But man need bread & butter? 10k would sort me out for 2 years. If it consistent income? Might be much much longer?
My stl.
Borromien rings ( turbine 1).stl (712.6 KB)
Things I do with my boredom?
It donāt occur to me sometimes? I did this as a could I win a prize? I bet that went round discord a few time? Bet hey oh I love fishing the cosmos for answers? Sometimes a few come back? Mine is high solidity. @Rodread funny you mentioned the fan showdown? as been the done that got the T-shirt. So to speak? I can up with what I did due to my interest in esoteric things? The ancients might as well have beaten us all to the punch?
Would be funny to see it as a kite?
But there we go lads life is never simple?
@Freeflying, Your comment is a little difficult to get through. Here is a ChatGPT rewrite that adds the famous Thomas Edison quote, and leaves out some other stuff:
I recently discovered a design in my feed that looks very similar to one I created a few months ago and sent to someone. Iām now considering the possibility that this person used my design without giving me proper credit or compensation. Iām familiar with the fact that Tinkercad files are linked to the designer, so Iām exploring the idea of seeking recognition for my contributions. I would be happy to receive even modest royalties from the design. However, the source code for Tinkercad files is legally restricted from being modified.
I have a strong interest in esoteric topics and created my own STL file, which I named āBorromien Rings (Turbine 1).stlā. I also wonder if the design could be used as a kite. Iām carefully weighing the potential outcomes and exploring my options. I know that invention requires more than just a spark of inspiration, and I appreciate Thomas Edisonās words that invention is 1% inspiration and 99% perspiration. I hope to use my own perseverance and determination to turn my ideas into successful inventions.
If youāre talking about the Sharrow propeller, thatās perhaps from 2009 a similar or identical idea was already patented in 2009, so it canāt have been copied from you. Here is some discussion: https://www.reddit.com/r/engineering/comments/10pvyx3/toroidal_propellers_a_noisekilling_game_changer/
One quote:
The article compares the noise and efficiency to props on outboard motors, which are cheap and simplistic.
Large ships (both military and commercial) use props with complex foil blades as opposed to simple fan blades on a standard outboard motor. The main source of noise is not trailing vortices but cavitation, which I didnāt see addressed there. It was telling that the article said āthere has been very little change in propeller design since the 1700āsā considering it has changed drastically in the last 50 years. I would be surprised if this style of design represented a major improvement over existing large propellers
If youāre talking about a reviewer maybe reviewing your idea or something that looks like it, wasnāt that the point of sending it in?
Edit: another discussion: https://www.reddit.com/r/AskEngineers/comments/10wmb0e/how_did_we_just_think_of_toroidal_propellers/
One comment:
these were discovered by a project to try to reduce noise from a multicopter. Prior to this noise mitigation research was done for things like subs, aircraft and helicopters that have many other sources of noise that are relatively easier to tackle than trying to mess with the propeller too much. You also try to avoid messing with the primary source of lift/thrust as lift and thrust are generally some of the most important performance metric for an aircraft, helicopter or ship propellers.
the discovery of potential increase efficiency of these things was accidental. The original author expected to find drag and efficiency penalties, not gains. In addition to that there hasnāt been enough research yet into the robustness of the efficiency gain. Does it scale up to the size of a helicopter rotor? A ship propeller? How do you deal with the need to be able to vary the pitch of the propeller for helicopter and aircraft applications? Do you still retain the noise reduction and efficiency gains when you change their pitch angle? This kind of propeller is novel and looks fit for the application it was designed for (like multicopters) but the jury is still out on just how revolutionary it is for all applications.
how do you make such a propeller. This is a complicated 3D shape with compound curves. Even the original author admits that to build these youād most likely need 3D printers which hasnāt been around for more than 20years outside of research labs. Itās one thing to 3D print a plastic toroid propeller that fits in your hand, how do you propose to build them out of steel thatās the size of a house?
the flow and geometry of this type of propeller is highly 3 dimensional. You wouldnāt be able to analyze much less optimize it without 3D CFD and 3D CAD tools. A normal propeller blade is mostly 2D with very good approximate quasi 2D solutions that can be found in text books. Before the advent of the current computing power that is available to us, itās pure folly to trial and error these kinds of propellers that are hard to build and hard to analyze and no one had expected them to be more efficient than traditional propellers.
Fair shout @Windy_Skies!
Definitely convergent thinking on my part!
The point is to throw something out there?
It look like the universe answered?
2009 till now, is a long time not to know?
Much appreciated! Very helpful!
If I know some donāt mess with the military? they mess you up!
Great to know I can come to similar conclusion? without the need to look at terms of paper? Wouldnāt of known what one was? Till very recently? They do say great minds think a like?
Iām out by a hefty margin? Well done that 2009 team! I concede the world is vast as always! Iāve much learn!
I have to laugh a the striking similarities? Even if was was dream weaving? Best return of ideas? Its often where I learn the most? If ever I was looking for directions? Something like that straightened thing out! Fan showdown a great show!
I wonder what happens to all the design he is sent?
As for awes using toroidal blades? Would it make it more suitable for urban environment?
Pretty clean air flow. Well done on the effort!
Another step towards quiet turbines, I suppose?
Any chance of seeing windswept version for Kite turbines?
You even got a good Db.score. I have noticed how tight the airflow was on your design? I wonder with a few tweaks you could get it tighter? For more high density flow? It looked very close to forming a tornado? Not expecting it to Chuck trucks around? But would be amusing to see a kite turbine on the WMD list? If it possible to multiply airflow phenomena? Then maybe a new direction for energy production?
After all you do get rouge waves in the ocean? Tai chi state use the opponents momentum against them. Use the wind to create more wind.
I suspect a boost in efficiency? Somewhere near the theoretical maximum?
If weāre currently able to toy with vortices? Then maybe a shift in turbines design Is possible?
Great job @Rodread! A top 20 position is for great a shout! Well done rod!
My fan got featured
Or should we say Ā«yourĀ» fan? Nice work!
https://youtube.com/@cyclotechgmbh5271
Considering I mentioned a while back the Magnus effect?
Awes copters?
Considering I mentioned a while back the Magnus effect?
Awes copters?
For what I see on the video the CycloTech comprises motors with adjustable pitch blades that are similar to vertical axis rotors placed on a horizontal axis (example Darrieus VAWT). There is no Magnus effect: lift is provided by the pitched blades, not by a whole cylinder-like shape rotating within a flow.
For Magnus effect to occur, there must be a flow (wind or sea current) on the rotating rotor. The Magnus rotor generates positive lift when the flow and the direction of rotation are well adjusted.
The Magnus effect is an observable phenomenon commonly associated with a spinning object moving through a fluid. A lift force acts on the spinning object. The path of the object may be deflected in a manner not present when the object is not spinning. The deflection can be explained by the difference in pressure of the fluid on opposite sides of the spinning object. The strength of the Magnus effect is dependent on the speed of rotation of the object. The most readily observable case of the Ma...
A Magnus rotor, like the Flettner rotor, is driven by a motor which consumes a lot of energy.
There are self-rotating rotors that generate Magnus effect like Savonius-like kites (photo below) on a horizontal axis, or Sharp rotor.
Yep fair doos! When I first look at the cyclocar from cycloTech It looked little like?
Or the
Which didnāt seam much different due too the arrangement? So yes see it very different!
It acting more like.
But it more like a rotor wing?
Thing I do when I get disturbed abt. @4am by phone calls? Spiny thing look very similar.