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potatopeel2 commented 1 week ago

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Having Fun with a 3D Printed Gear Cube!

This cube made of inter-locking gear wheels was printed - yes, printed! On an Objet 3D Printer. The material used here is Objet VeroClear transpare...

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potatopeel2 said:

It looks great! What was it printed on? Can I print it on our Objet30 machine? Is it possible to get the STL file?

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potatopeel2 commented 9 months ago

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Rubber Muscle Actuator used to power the associated morphing wing

These rubber muscle actuators were also fabricated by students at Texas A&M University-Kingsville, in the Mechanical Engineering Department. These...

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potatopeel2 said:

@frenchie310 I guess that would depend on what fluid is used. Right now we are using air, which is light, but hydraulic fluid would greatly increase actuator stiffness, and could easily go to much higher pressures. It's too early to say which would be lighter, but we would hope that a wing whi...

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  Another view of morphing wing with high force actuator

  Another video of morphing wing fabricated at Texas A& M

  University-Kingsville

  1,437 views

  potatopeel2 said:

  Yes we do need to do that!

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potatopeel2 commented 9 months ago

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Morphing Wing with high force actuator

Morphing wing created in the Mechanical Engineering Department at Texas A&M University - Kingsville by an undergraduate team.

Here is a journal pa...

64,051 views

potatopeel2 said:

@dedawde The air pressure indicated in the description is the pressure it takes to inflate the internal rubber muscle actuators, and has nothing to do with wing loading.

• potatopeel2 commented 9 months ago

  potatopeel2 said:

  @jackscott91 I am a structural guy, not an aerodynamicist, but I would think that using jets of air would only be useful over a small range of air speeds, while changing your camber could work over a wide range of air speeds. Both of them may entail extra weight, unless you can incorporate your ...

• potatopeel2 commented 9 months ago

  potatopeel2 said:

  @janisaree This wing was only designed to demonstrate variable camber. If one were to put this into practice on an airplane, it could have a discrete cambering section, much like the Fowler flap assemblies on an airliner, or it could entail a more compliant bird-like wing where the cambering wou...

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potatopeel2 commented 1 year ago

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Morphing Wing with high force actuator

Morphing wing created in the Mechanical Engineering Department at Texas A&M University - Kingsville by an undergraduate team.

Here is a journal pa...

64,051 views

potatopeel2 said:

@stonerscolony

Right now the Air Force is trying to use Shape Memory Polymers to accomplish the same thing, but it takes considerable energy to heat the wing skins up, when you want them flexible. What you are suggesting is to have a mechanical system inside the structure, like current planes.....

• potatopeel2 commented 1 year ago

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  Morphing Wing with high force actuator

  Morphing wing created in the Mechanical Engineering Department at Texas A&M University - Kingsville by an undergraduate team.

  Here is a journal pa...

  64,051 views

  potatopeel2 said:

  @alkeli78

  If I had the funding, I would like to prove you wrong on all accounts. The rubber muscles actuators (RMAs) that power the wing are .5 inches in diameter, but expand in diameter as inflated, see video. They produce about 32X times the force as a pneumatic cylinder of the same diamete...

• potatopeel2 commented 1 year ago

  1:14 Add to

  Morphing Wing with high force actuator

  Morphing wing created in the Mechanical Engineering Department at Texas A&M University - Kingsville by an undergraduate team.

  Here is a journal pa...

  64,051 views

  potatopeel2 said:

  @COD5252

  I am not sure what you mean here, it is likely that any plane that will fly is relatively low weight. Remember that this morphing wing demonstrator was built on a very limited budget, yet achieves the same or more change in angle than many higly funded programs.

• potatopeel2 commented 1 year ago

  1:14 Add to

  Morphing Wing with high force actuator

  Morphing wing created in the Mechanical Engineering Department at Texas A&M University - Kingsville by an undergraduate team.

  Here is a journal pa...

  64,051 views

  potatopeel2 said:

  @Puronicth

  I would think that the higher speeds would be a function of the airfoil shape. The skins are rather stiff, so I don't think that flutter would be a problem.

• potatopeel2 commented 1 year ago

  1:14 Add to

  Morphing Wing with high force actuator

  Morphing wing created in the Mechanical Engineering Department at Texas A&M University - Kingsville by an undergraduate team.

  Here is a journal pa...

  64,051 views

  potatopeel2 said:

  @inkwhir:

  We would like to see that too. The wing was hung from fishing line for the video that you see, I don't know if it could be mounted on a stinger to be put in a wind tunnel or not. Perhaps it could be mounted on one side. Just a note, the skins are likely too stiff, so perhaps we shou...

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