Author Topic: NIAC 2024 Phase 1  (Read 3100 times)

Offline Asteroza

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NIAC 2024 Phase 1
« on: 01/07/2024 10:49 pm »
NIAC 2024 phase one studies announcement now out

https://www.nasa.gov/general/niac-2024-selections/


Personal highlights include

LEO LH2 propellant depot ZBO via electroluminescent cooling (aka using heat to drive LED's pointing into deep space, I guess a cousin idea to laser cooled solar probes?)
https://www.nasa.gov/general/electro-luminescently-cooled-zero-boil-off-propellant-depots/


An MHD electrolytic cell for a solid state water cracker as an oxygen generator. This sounds fun.
https://www.nasa.gov/general/magnetohydrodynamic-drive-for-hydrogen-and-oxygen-production/


An eVTOL UAM startup is proposing their deflected slipstream lift augmentation tech (which looks like it essentially recycles the accelerated flow over the top of a wing) for a mars flyer.
https://www.nasa.gov/general/mars-aerial-and-ground-global-intelligent-explorer/
http://coflowjet.com/?page_id=150


City Labs and their tritium betavoltaic power generators get a chance to show off
https://www.nasa.gov/general/autonomous-tritium-micropowered-sensors/


Geoffrey Landis is back with a Venus sample return mission using a floating atmosphere miner to fuel up a carbon monoxide rocket, and a rendezvousing solar flyer delivering the sample.
https://www.nasa.gov/general/sample-return-from-the-surface-of-venus/


Interesting work on composite fibers/tethers using a mix of polymers and conductive components manufactured as a single monolithic fiber, suitable for L-band interferometry as part of a large deployable antenna
https://www.nasa.gov/general/lifa-lightweight-fiber-based-antenna-for-small-sat-compatible-radiometry/


Reusing older VLBI optical telescope free flyer research, design a shorter baseline optical interoferometer design for the lunar surface that can deal with variable baselines and be scalable in-situ.
https://www.nasa.gov/general/lunar_long_baseline_optical_imaging_interferometer/


Finally, a proposal for an animal hibernation/topor experiment on ISS
https://www.nasa.gov/general/studying-torpor-in-animals-for-space-health-in-humans/

Offline Zed_Noir

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Re: NIAC 2024 Phase 1
« Reply #1 on: 01/27/2024 08:43 pm »
<snip>
Personal highlights include

LEO LH2 propellant depot ZBO via electroluminescent cooling (aka using heat to drive LED's pointing into deep space, I guess a cousin idea to laser cooled solar probes?)
https://www.nasa.gov/general/electro-luminescently-cooled-zero-boil-off-propellant-depots/

<snip>

Recall first reading about cooling by laser discharge many years ago in David Brin's  Sundiver  novel. Which foreshadows the Parker Solar Probe.

Offline aceshigh

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Re: NIAC 2024 Phase 1
« Reply #2 on: 02/16/2024 05:59 pm »
<snip>
Personal highlights include

LEO LH2 propellant depot ZBO via electroluminescent cooling (aka using heat to drive LED's pointing into deep space, I guess a cousin idea to laser cooled solar probes?)
https://www.nasa.gov/general/electro-luminescently-cooled-zero-boil-off-propellant-depots/

<snip>

Recall first reading about cooling by laser discharge many years ago in David Brin's  Sundiver  novel. Which foreshadows the Parker Solar Probe.

I think it was exactly in this forum, over 15 years ago, that I asked about the physical possibility of Sundiver's Laser Cooling.

Several people told me it violated the 2nd Law of Thermodynamics.


edit: oops, I created the topic in April 2010, so ONLY 14 years ago
https://forum.nasaspaceflight.com/index.php?topic=22649.0
« Last Edit: 02/16/2024 06:01 pm by aceshigh »

Offline redneck

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Re: NIAC 2024 Phase 1
« Reply #3 on: 02/17/2024 10:55 pm »
<snip>
Personal highlights include

LEO LH2 propellant depot ZBO via electroluminescent cooling (aka using heat to drive LED's pointing into deep space, I guess a cousin idea to laser cooled solar probes?)
https://www.nasa.gov/general/electro-luminescently-cooled-zero-boil-off-propellant-depots/

<snip>

Recall first reading about cooling by laser discharge many years ago in David Brin's  Sundiver  novel. Which foreshadows the Parker Solar Probe.

I think it was exactly in this forum, over 15 years ago, that I asked about the physical possibility of Sundiver's Laser Cooling.

Several people told me it violated the 2nd Law of Thermodynamics.


edit: oops, I created the topic in April 2010, so ONLY 14 years ago
https://forum.nasaspaceflight.com/index.php?topic=22649.0

I'm not familiar with this particular subject. I have noticed that there are several that seem to be more certain than knowledgeable in other fields. Referring to the quoted sentence of yours that I underlined  MY meaning being that it is important to run ones own numbers.

Offline Lampyridae

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Re: NIAC 2024 Phase 1
« Reply #4 on: 02/18/2024 08:40 am »
<snip>
Personal highlights include

LEO LH2 propellant depot ZBO via electroluminescent cooling (aka using heat to drive LED's pointing into deep space, I guess a cousin idea to laser cooled solar probes?)
https://www.nasa.gov/general/electro-luminescently-cooled-zero-boil-off-propellant-depots/

<snip>

Recall first reading about cooling by laser discharge many years ago in David Brin's  Sundiver  novel. Which foreshadows the Parker Solar Probe.

I think it was exactly in this forum, over 15 years ago, that I asked about the physical possibility of Sundiver's Laser Cooling.

Several people told me it violated the 2nd Law of Thermodynamics.


edit: oops, I created the topic in April 2010, so ONLY 14 years ago
https://forum.nasaspaceflight.com/index.php?topic=22649.0

I'm not familiar with this particular subject. I have noticed that there are several that seem to be more certain than knowledgeable in other fields. Referring to the quoted sentence of yours that I underlined  MY meaning being that it is important to run ones own numbers.

Here's a brief technical explanation of the technology:

https://www.esa.int/gsp/ACT/projects/electroluminescent_cooling_using_LEDs/

Essentially, some LEDs can emit light greater than the input power, with phonons (heat) from the crystal lattice providing the extra, thereby creating a refrigerating effect. This was first observed in 1964 (>90% of photons GaAs diodes have hv > than input voltage, the extra coming from input heat).

The question of entropy is explained by:
Quote
The emitted photons from the LED possess entropy, and can therefore carry heat, by virtue of their spatial and temporal incoherence.

T. P. Xiao, K. Chen, P. Santhanam, S. Fan, and Eli Yablonovitch, "Electroluminescent refrigeration by ultra-efficient GaAs light-emitting diodes", Journal of Applied Physics, 2018, Volume 123(17), Pages 173104, DOI: 10.1063/1.5019764

https://pubs.aip.org/aip/jap/article/123/17/173104/155381/Electroluminescent-refrigeration-by-ultra
« Last Edit: 02/18/2024 09:19 am by Lampyridae »

Offline redneck

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Re: NIAC 2024 Phase 1
« Reply #5 on: 02/18/2024 08:52 am »


I'm not familiar with this particular subject. I have noticed that there are several that seem to be more certain than knowledgeable in other fields. Referring to the quoted sentence of yours that I underlined  MY meaning being that it is important to run ones own numbers.

Here's a brief technical explanation of the technology:

https://www.esa.int/gsp/ACT/projects/electroluminescent_cooling_using_LEDs/

Thanks. Interesting concept. I read Sundiver a few years back. The laser cooling concept was a plot device as I understood it at the time.
« Last Edit: 02/18/2024 08:54 am by redneck »

Online StraumliBlight

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Re: NIAC 2024 Phase 1
« Reply #6 on: 05/02/2024 07:07 pm »
« Last Edit: 05/02/2024 07:14 pm by StraumliBlight »

Offline Twark_Main

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Re: NIAC 2024 Phase 1
« Reply #7 on: 05/03/2024 01:48 am »
...Fluidic Telescope (FLUTE)...

...The Great Observatory for Long Wavelengths (GO-LoW)...

...Flexible Levitation on a Track (FLOAT)...

 ...ScienceCraft for Outer Planet Exploration (SCOPE)...

Good to see the NASA Ingenious Acronym Competition is continuing apace.  ;D

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