Date: 2/04/2019 16:32:10
From: Tau.Neutrino
ID: 1370016
Subject: MIT And NASA Unveil a Brand New kind of Airplane Wing

MIT And NASA Unveil a Brand New Kind of Airplane Wing That Could Change How We Fly

A team from NASA and MIT has created a new type of airplane wing — and it could make air travel far more efficient.

more…

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Date: 2/04/2019 18:35:55
From: Spiny Norman
ID: 1370042
Subject: re: MIT And NASA Unveil a Brand New kind of Airplane Wing

Tau.Neutrino said:


MIT And NASA Unveil a Brand New Kind of Airplane Wing That Could Change How We Fly

A team from NASA and MIT has created a new type of airplane wing — and it could make air travel far more efficient.

more…

From that link – “The design allows the wing to change shape automatically, adjusting itself to whatever configuration is optimal for the current phase of flight — with one configuration for take-off, for example, and another for landing.”

You mean like every wing that’s got slats/leading edge flaps and/or trailing edge flaps, which have been around for up near a century.
I think they mean that the actual profile of the wing changes smoothly, rather than add-on bits that change the shape in sections. Could be a reasonable thing, though the various slots that slats & flaps have do work better at generating lift than if the wing was just one (albeit bendy) profile.

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Date: 2/04/2019 18:50:47
From: Michael V
ID: 1370044
Subject: re: MIT And NASA Unveil a Brand New kind of Airplane Wing

Spiny Norman said:


Tau.Neutrino said:

MIT And NASA Unveil a Brand New Kind of Airplane Wing That Could Change How We Fly

A team from NASA and MIT has created a new type of airplane wing — and it could make air travel far more efficient.

more…

From that link – “The design allows the wing to change shape automatically, adjusting itself to whatever configuration is optimal for the current phase of flight — with one configuration for take-off, for example, and another for landing.”

You mean like every wing that’s got slats/leading edge flaps and/or trailing edge flaps, which have been around for up near a century.
I think they mean that the actual profile of the wing changes smoothly, rather than add-on bits that change the shape in sections. Could be a reasonable thing, though the various slots that slats & flaps have do work better at generating lift than if the wing was just one (albeit bendy) profile.

Yeah, it’s not explained well, but unfortunately the original paper is behind a pay-wall. Bug-rit.

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Date: 2/04/2019 18:52:29
From: Cymek
ID: 1370045
Subject: re: MIT And NASA Unveil a Brand New kind of Airplane Wing

Michael V said:


Spiny Norman said:

Tau.Neutrino said:

MIT And NASA Unveil a Brand New Kind of Airplane Wing That Could Change How We Fly

A team from NASA and MIT has created a new type of airplane wing — and it could make air travel far more efficient.

more…

From that link – “The design allows the wing to change shape automatically, adjusting itself to whatever configuration is optimal for the current phase of flight — with one configuration for take-off, for example, and another for landing.”

You mean like every wing that’s got slats/leading edge flaps and/or trailing edge flaps, which have been around for up near a century.
I think they mean that the actual profile of the wing changes smoothly, rather than add-on bits that change the shape in sections. Could be a reasonable thing, though the various slots that slats & flaps have do work better at generating lift than if the wing was just one (albeit bendy) profile.

Yeah, it’s not explained well, but unfortunately the original paper is behind a pay-wall. Bug-rit.

Maybe it just adds in a Transformers transforming sound to sound cooler

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Date: 2/04/2019 18:54:36
From: kryten
ID: 1370046
Subject: re: MIT And NASA Unveil a Brand New kind of Airplane Wing

Michael V said:


Spiny Norman said:

Tau.Neutrino said:

MIT And NASA Unveil a Brand New Kind of Airplane Wing That Could Change How We Fly

A team from NASA and MIT has created a new type of airplane wing — and it could make air travel far more efficient.

more…

From that link – “The design allows the wing to change shape automatically, adjusting itself to whatever configuration is optimal for the current phase of flight — with one configuration for take-off, for example, and another for landing.”

You mean like every wing that’s got slats/leading edge flaps and/or trailing edge flaps, which have been around for up near a century.
I think they mean that the actual profile of the wing changes smoothly, rather than add-on bits that change the shape in sections. Could be a reasonable thing, though the various slots that slats & flaps have do work better at generating lift than if the wing was just one (albeit bendy) profile.

Yeah, it’s not explained well, but unfortunately the original paper is behind a pay-wall. Bug-rit.

Can you get to it via the Russians? Does it have a DOI?

http://sci-hub.tw/

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Date: 2/04/2019 18:57:50
From: Michael V
ID: 1370049
Subject: re: MIT And NASA Unveil a Brand New kind of Airplane Wing

kryten said:


Michael V said:

Spiny Norman said:

From that link – “The design allows the wing to change shape automatically, adjusting itself to whatever configuration is optimal for the current phase of flight — with one configuration for take-off, for example, and another for landing.”

You mean like every wing that’s got slats/leading edge flaps and/or trailing edge flaps, which have been around for up near a century.
I think they mean that the actual profile of the wing changes smoothly, rather than add-on bits that change the shape in sections. Could be a reasonable thing, though the various slots that slats & flaps have do work better at generating lift than if the wing was just one (albeit bendy) profile.

Yeah, it’s not explained well, but unfortunately the original paper is behind a pay-wall. Bug-rit.

Can you get to it via the Russians? Does it have a DOI?

http://sci-hub.tw/

I’ll try (yes, it has a doi).

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Date: 2/04/2019 18:59:38
From: ChrispenEvan
ID: 1370050
Subject: re: MIT And NASA Unveil a Brand New kind of Airplane Wing

Michael V said:


Spiny Norman said:

Tau.Neutrino said:

MIT And NASA Unveil a Brand New Kind of Airplane Wing That Could Change How We Fly

A team from NASA and MIT has created a new type of airplane wing — and it could make air travel far more efficient.

more…

From that link – “The design allows the wing to change shape automatically, adjusting itself to whatever configuration is optimal for the current phase of flight — with one configuration for take-off, for example, and another for landing.”

You mean like every wing that’s got slats/leading edge flaps and/or trailing edge flaps, which have been around for up near a century.
I think they mean that the actual profile of the wing changes smoothly, rather than add-on bits that change the shape in sections. Could be a reasonable thing, though the various slots that slats & flaps have do work better at generating lift than if the wing was just one (albeit bendy) profile.

Yeah, it’s not explained well, but unfortunately the original paper is behind a pay-wall. Bug-rit.

got a DOI for the paper?

Reply Quote

Date: 2/04/2019 18:59:58
From: ChrispenEvan
ID: 1370051
Subject: re: MIT And NASA Unveil a Brand New kind of Airplane Wing

kryten said:


Michael V said:

Spiny Norman said:

From that link – “The design allows the wing to change shape automatically, adjusting itself to whatever configuration is optimal for the current phase of flight — with one configuration for take-off, for example, and another for landing.”

You mean like every wing that’s got slats/leading edge flaps and/or trailing edge flaps, which have been around for up near a century.
I think they mean that the actual profile of the wing changes smoothly, rather than add-on bits that change the shape in sections. Could be a reasonable thing, though the various slots that slats & flaps have do work better at generating lift than if the wing was just one (albeit bendy) profile.

Yeah, it’s not explained well, but unfortunately the original paper is behind a pay-wall. Bug-rit.

Can you get to it via the Russians? Does it have a DOI?

http://sci-hub.tw/

darn, beaten to it.

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Date: 2/04/2019 19:02:14
From: kryten
ID: 1370054
Subject: re: MIT And NASA Unveil a Brand New kind of Airplane Wing

ChrispenEvan said:


kryten said:

Michael V said:

Yeah, it’s not explained well, but unfortunately the original paper is behind a pay-wall. Bug-rit.

Can you get to it via the Russians? Does it have a DOI?

http://sci-hub.tw/

darn, beaten to it.

I love SciHub. I notice it hasn’t had to move recently.

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Date: 2/04/2019 19:02:46
From: Michael V
ID: 1370055
Subject: re: MIT And NASA Unveil a Brand New kind of Airplane Wing

Michael V said:


kryten said:

Michael V said:

Yeah, it’s not explained well, but unfortunately the original paper is behind a pay-wall. Bug-rit.

Can you get to it via the Russians? Does it have a DOI?

http://sci-hub.tw/

I’ll try (yes, it has a doi).

Got it, thanks. doi is:

https://doi.org/10.1088/1361-665X/ab0ea2

put into the search function at

http://sci-hub.tw/

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Date: 2/04/2019 19:03:54
From: Cymek
ID: 1370057
Subject: re: MIT And NASA Unveil a Brand New kind of Airplane Wing

kryten said:


ChrispenEvan said:

kryten said:

Can you get to it via the Russians? Does it have a DOI?

http://sci-hub.tw/

darn, beaten to it.

I love SciHub. I notice it hasn’t had to move recently.

I remember some wing that can curve it’s shape both up and down and left to right automatically

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Date: 2/04/2019 19:06:11
From: Michael V
ID: 1370059
Subject: re: MIT And NASA Unveil a Brand New kind of Airplane Wing

To read:

https://sci-hub.tw/10.1088/1361-665X/ab0ea2

Anyway it ‘s an adaptive structure, based on an octahedral lattice.

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Date: 2/04/2019 19:10:33
From: Michael V
ID: 1370062
Subject: re: MIT And NASA Unveil a Brand New kind of Airplane Wing

Michael V said:


To read:

https://sci-hub.tw/10.1088/1361-665X/ab0ea2

Anyway it ‘s an adaptive structure, based on an octahedral lattice.

SN should read the entire article. It’s lengthy and detailed.

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Date: 3/04/2019 03:34:59
From: mollwollfumble
ID: 1370164
Subject: re: MIT And NASA Unveil a Brand New kind of Airplane Wing

Michael V said:


To read:

https://sci-hub.tw/10.1088/1361-665X/ab0ea2

Anyway it’s an adaptive structure, based on an octahedral lattice.


Octahedral lattice? Octahedra are rigid, and if assembled in the normal way (edge to edge) the result is a face centred cubic lattice which is very rigid, not adaptive. If assembled corner to corner – I don’t know.

“One of the most promising, and challenging, applications are adaptive aerostructures that respond to changing aerodynamic loading.”

You mean, like, collapse?

“shape-morphing aerostructures face a natural conflict between being lightweight and compliant enough to act as a mechanism, while also being able to bear operational loads” … “Recent literature has shown how a Young’s modulus typically associated with elastomers can be attained at a fraction of the density through architected cellular materials”.

Oh I see, the assembly is rigid, with the flexibility coming from the elasticity of the strut elements in the space frame. That makes sense.

Even more, by adjusting the thickness (and composition?) of individual space frame strut members, the overall elasticity can be dialed in to vary in position almost without limit.

It would be fascinating to compare the performance to that of traditional honeycomb.

“discrete assembly”

or 3-D printing. But I rather like the idea of microscale robot assembly using glued joints.

“cuboctahedral lattice”

OK, that means the octahedra are assembled corner to corner, not edge to edge. That would be lightweight and rigid, good.

“polyetherimide”

Check web. A high-heat resistant, transparent thermoplastic similar to PEEK. Modulus of elasticity typically 8.7 GPa but can be up to 34.5 GPa (possibly depending on what fibres are included). Yield strength typically 115 MPa but can be up to 255 MPa.

“Lattice buk stiffness similar to silicone, but at 0.5% of the density”.

Yes, well, I wouldn’t consider building an aircraft wing out of silicone.

A lot more in article.

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