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"Compact Superconducting PowerSystems for Airborne Applications "

3146 Views 13 Replies 5 Participants Last post by  aeroscott
Latest NASA tech breif, system , airbone 1 megawatt APU (powerplant not specified) . Low voltage (<300V) and DC , Low -frequency AC (<1000 hz) short tansmition length (<30 meters) . hyperconductor = loses most of it's esistance at cryo temps . YBCO superconducting wire with a higher opperational temp (20-40 k. higher) then the older BSCCO wire . latest geneation of cryo coolers have long life (5-10 years no failures) . Prototype unit compleated in 2007 , Air Foce's initial (conservative) goal of 4KW/lb. much higher power ratios in future systems . 97% overall effiency with cryo cooling included . 10,000 rpm , 1.3 MW . 325 lbs with cooler (1300KW/ 4KW/lb.=325 lbs.) link ,rejistration required , The WESTIAC Quarterly,Volume 9,Number 1
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and I want one with batteries included. LOL ,as a motor or 4 motors. That's 5.2 megs at the same weight (power train)as the most advanced super car (Bugatti) with 6.970 times the hp.(batteries not included)
I think Crodriver might be able to use it for a small project - eg. range extender for his bm. Or we turn it over to Todd to see what he can come up with - batteries included :D:D:eek:

I am very excited by this , not so much as a generator but as a motor . As stated many times higher power ratios can be achieved . I looked into this idea in the 1980's , that is cooling a motor ( aero starter/generator )at that time to modest cryo temps for very high output motor . As I remember a 10 x reduction in resistance .I can't remember the temp I found that 10 x . A interesting experiment would be to put a CO2 bottle on a EV drag racer and feed it into the cooling air . CO2 may be too conductive so nitrogen ( liquid) being -300 f. would better then -40 of CO2 . I would expect more power to the wheels from a given battery pack . added ;10x is way more then I though more like 4x at -300 f. , but the heat being removed at such a high rate could end up at 10x more amps
the only problems that I see is that most metals become extremely brittle at -300, and getting enough compressed gas to run for any distance cheaply. LN2 is rather pricey.
the only problems that I see is that most metals become extremely brittle at -300, and getting enough compressed gas to run for any distance cheaply. LN2 is rather pricey.
I was thinking for test only . stanless is good at cryo temps like 304 . the motor shaft could be a problem and be replaced with stanless .
This thread has a similar sound to threads by computer overclockers.

Make sure you do any flying with this setup daytime / VFR, ok? And, make sure you have enough space to get back to land if you let the smoke out... :D
The heading was just the title in the nasa tech brief . It confirmed that with the new higher temp superconductors and advances made in coolers that 97% possible in motors or generators/with coolers factored . drag racing seams like it would be a great niche for developing this . night flying needs 2 things , a FLUR camera and lots of watts with big lights so I can see where I'm putting down , 2 independent systems and 3 independent power systems for them . A ev airplane with split battery works for me . ps if flying at night or day over forests or mountains a ballistic parachute .
based on experiences, 304 gets brittle too ( at least on the thruster test stand running Ln2 and hydrazine). Perhaps 17-7 ph or a 316 series ss?? what about the windings and the stator materials?

'chutes and engines are for sissies.
no old and bold pilots except Bob Hoover . don't know about what shock loads these motors can take or they experence .
I would think you might have problems with condensation. take and dump a co2fire extinguisher and watch the water form on the outside of the horn.

try packing the motor in dry ice.
If just blowing gas threw the motor water could condence on the outside of the motor not inside . ps : bush motors are brush limited so cooling may not do much .
but that would be the whole point of super cooling: stuff isn't supposed to be limited any longer by heat dissipation.
I was tinking about arcing being the limiting factor ?
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