User Tag List

Page 49 of 77 FirstFirst ... 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 ... LastLast
Results 721 to 735 of 1149
  1. #721
    Join Date
    May 2009
    Location
    Santa barbara, ca/boulder city, nv
    Posts
    1,873
    Thanks (Given)
    556
    Thanks (Received)
    76
    Likes (Given)
    635
    Likes (Received)
    299
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    Getting back on to the topic of this thread title... Amazing, eh?

    I'm having the devil of a time finding out more information (tech information that I can run some math numbers on), about the Hellkat battery catamaran. Both the original article posted by Noli and this one I found say that it made it's 100+ mph run using a pair of 180hp motors. Now, I've never had a big fast cat. My biggest boat is 18 feet and goes about 65 with a 150hp motor, just me in it, and no bimini top. It goes about 55 with the wife and kids and all our gear and the bimini top up.

    So...

    -I know cats and tunnels are efficient, but Isn't 360 hp a little thin to push a 32 foot cat over 100mph?

    -Someone here at S&F said that they were running the 180hp motors over-clocked to put out 360hp each for 720hp total, Which makes 100+ sound more believable. Is that something you heard through the grapevine, or something the rest of us can actually read? And can you share a link?

    -Someone else here, (Chaz, I think) said that the boat was towed to the starting line, and still nosed over due to battery drain before the whole 3/4 mile run was complete. Is that true? And was that heard through the grapevine, or can the rest of us read it?*

    I found no detail about the installed battery capacity, but if it was like say, the Tesla 100KWh pack, that could theoretically sustain 720hp for ten minutes, from 100% charge, to zero. I say "theoretically", because car battery packs never see a use case where they would go from 100% full, to 100% empty at full power the whole time. Those kinds of drain rates are a fire risk. Also, a 100KWh pack with all the fire safeties in place would weigh 1200 lbs, or about the weight of three or four 180hp electric motors. So maybe they used a smaller capacity battery? But smaller capacity batteries don't tolerate full power discharges for as long, before they overheat and catch fire. Basically, there is a lot that is not known or that I can't find, about the batteries they used. Does anybody have a link to any specific battery specs?

    Also, on youtube, there is only one video, a promo from the people who made the boat. Doesn't that seem odd for such a monumental achievement? In fact, the whole things seems rather thinly covered for all the fuss that was made about it.

    *In their promo video, it seems plausible that the boat actually did make the whole three quarter mile run without nosing over.

    -Peter
    "padded wonder"
    __________
    the wet:
    Hydrostream Viper, 140 v4 crossflow, some Raker props
    16' Baja/Tahiti/Sidewinder clone, 135 v4 crossflow
    17' boston whaler alert, 90 merc fourstroke
    13' boston whaler, 40hp yamaha

    the dry:
    2003 bmw ///M5
    1993 mustang/griggs racing road race car
    and a handful of clunkers

  2. #722
    Join Date
    Oct 2002
    Location
    PARADISE /Naples
    Posts
    8,708
    Thanks (Given)
    60
    Thanks (Received)
    357
    Likes (Given)
    348
    Likes (Received)
    1440
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    If you want truth not charlies FABLE
    call Shaun Torrente the driver of that boat
    239 703 9400

    https://shauntorrenteracing.com/collections/all
    We have invented the world; WE see

  3. #723
    Join Date
    May 2009
    Location
    Santa barbara, ca/boulder city, nv
    Posts
    1,873
    Thanks (Given)
    556
    Thanks (Received)
    76
    Likes (Given)
    635
    Likes (Received)
    299
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by CUDA View Post
    If you want truth not charlies FABLE
    call Shaun Torrente the driver of that boat
    239 703 9400

    https://shauntorrenteracing.com/collections/all
    Don't want to bug a businessman with a phone call asking him for random details about a thing he doesn't sell, and that his employer might consider proprietary, when he could be working or helping out customers. It would be rude to put him on the spot like that. So I went to his web site. And there is nothing in the way of answers to the questions I have asked. If he has information to share, and a story to tell, he should put it up on his web site.

    Right now, it seems as if there is nothing out there in the way of tech specs, and that Vision and the other parties involved, want it that way. Given the mathematics and physics of what we are talking about here, and that they are trying/needing to gin up interest, that is not surprising. Still, I hold out hope.

    -Peter
    Last edited by pcrussell50; 01-24-2023 at 02:32 PM.
    "padded wonder"
    __________
    the wet:
    Hydrostream Viper, 140 v4 crossflow, some Raker props
    16' Baja/Tahiti/Sidewinder clone, 135 v4 crossflow
    17' boston whaler alert, 90 merc fourstroke
    13' boston whaler, 40hp yamaha

    the dry:
    2003 bmw ///M5
    1993 mustang/griggs racing road race car
    and a handful of clunkers

  4. Likes David - WI liked this post
  5. #724
    Join Date
    May 2009
    Location
    Santa barbara, ca/boulder city, nv
    Posts
    1,873
    Thanks (Given)
    556
    Thanks (Received)
    76
    Likes (Given)
    635
    Likes (Received)
    299
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    Doing a little more digging on the Vision Marine web site, and using math on the specs they give:

    Vision Marine themselves, is smart. The only boats they sell, are displacement hull boats. For $55,000 You can pile them with tons of battery weight, and putz around the harbor at 5mph for hours like that with your wife or girlfriend, eating cheese and drinking wine. https://visionmarinetechnologies.com/volt-en/

    Their 180hp outboard "system" which includes the motor and two, 35KWh batteries (enough to go from 100% to zero in about half an hour if you are going full speed), is not available for sale to the public. Of course you don't have to use all 180hp. You can go half power for twice as long, about an hour before you are dead in the water. (Of course, you will have to use less than that if you have to idle back through the no wake zone and get yourself up onto the trailer with a few minutes to spare).
    Here is the link to that page if anyone is interested.

    Again, they only sell the 180hp outboard as a system, to OEM boat makers. You and I can't get it. But it Looks like Four Winns has bitten, and says they will offer this drivetrain on their 22 foot H2 hull sometime this summer. They claim a top speed of 40mph. The petro version of this boat weighs 4100 lbs, can carry ten people, and 250hp. It will be interesting to see the weight, price, load carrying, specs for the 180hp battery version. Especially the price. Because Vision's 18 foot, 5mph displacement hull boat is $50-55K USD. But Four Winns does not have any specs up yet. Which seems odd if they are to begin selling them this summer. I have no facts to back it, but I have my doubts this will come off on schedule. Here if anyone wants to put money down and get on the waiting list.

    -Peter
    Last edited by pcrussell50; 01-24-2023 at 11:16 PM.
    "padded wonder"
    __________
    the wet:
    Hydrostream Viper, 140 v4 crossflow, some Raker props
    16' Baja/Tahiti/Sidewinder clone, 135 v4 crossflow
    17' boston whaler alert, 90 merc fourstroke
    13' boston whaler, 40hp yamaha

    the dry:
    2003 bmw ///M5
    1993 mustang/griggs racing road race car
    and a handful of clunkers

  6. Likes David - WI liked this post
  7. #725
    Join Date
    May 2009
    Location
    Santa barbara, ca/boulder city, nv
    Posts
    1,873
    Thanks (Given)
    556
    Thanks (Received)
    76
    Likes (Given)
    635
    Likes (Received)
    299
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by CUDA;[URL="tel:3375592"
    3375592[/URL]]https://www.nasa.gov/feature/glenn/2...-opportunities

    This is what I was refering to, try NASA

    Small Spacecraft Electric Propulsion Opens New Deep Space Opportunities



    <section id="ember25" class="collapsible opened ember-view" style="box-sizing: border-box; max-height: none; overflow-y: hidden;">
    An image of Northrop Grumman’s small electric propulsion thruster first light during testing at NASA Glenn Research Center’s Electric Power and Propulsion Laboratory.
    Credits: Northrop Gruman



    The path to the Moon, Mars, and beyond will require a fleet of spacecraft in many different shapes and sizes, including everything from massive rockets that produce millions of pounds of thrust to pioneering small electric propulsion thrusters that fit in the palm of your hand.
    For decades, innovators at NASA’s Glenn Research Center have been developing large, high-power electric propulsion (EP) systems that harness the power of the Sun to energize inert gases and turn them into extremely efficient thrust. Higher fuel efficiency means less propellant is needed, lowering launch costs while allowing spacecraft designers to reduce overall spacecraft weight to carry more payload mass, like technology demonstrations or more powerful scientific instruments.
    The agency’s primary EP efforts have centered on large exploration and science missions, like the 7-kilowatt (kW) NEXT-C gridded-ion system currently flying on the Double Asteroid Redirection Test mission and the 12-kW Advanced Electric Propulsion System used on the Power and Propulsion Element for NASA’s lunar orbiting space station known as Gateway.
    However, over the last five years, the Small Spacecraft Electric Propulsion (SSEP) project at NASA Glenn has been advancing high-performance sub-kilowatt (<1-kW) Hall-effect thruster and power processing technologies to enable smaller spacecraft. By utilizing smaller craft – those that could fit inside the trunk of your car versus being the size of your car – the agency opens more opportunities to conduct ambitious deep space missions at a fraction of the cost.
    In collaboration with U.S. industry, SSEP has developed a lightweight thruster capable of propelling a small spacecraft from Earth to the Moon, Mars, and beyond – a step up from most existing low-power electric propulsion systems produced commercially for low-Earth orbit operations.
    “Scaling down the size and power of Hall-effect thruster technologies, while retaining exceptional propulsive performance, has been a challenge,” says Gabriel Benavides, the lead engineer with the SSEP project at NASA Glenn. “It’s like asking a toy-sized car to drive across country with the same range and functionality of a full-sized passenger vehicle.”
    Glenn researchers have been able to miniaturize key technologies to create the new thrusters. For example, the SSEP propulsion systems use an optimized magnetic field topology and center-mounted cathode, which were originally developed for advanced medium and high-power applications. Such technologies are key to achieving the performance, very long life, and fuel efficiency required for planetary missions.
    Mission developers envision deploying small spacecraft for everything from a cluster of small, orbiting lunar communication satellites to relay data from Moon rovers and astronauts back to Earth, to deep space science missions to Venus, Mars, asteroids, and even the outer planets.
    “Dozens of small spacecraft can fit inside the payload fairing of a single large chemical rocket launched into space,” explains Benavides. “Once deployed, they can each be self-propelled to different destinations of interest.”
    While NASA looks to SSEP to self-propel small spacecraft into deep space, these technologies could be used for commercial needs closer to Earth. Commercial space-related applications include adjusting spacecraft in orbit, spacecraft servicing, and missions beyond low-Earth orbit to geosynchronous orbit or even the Moon.
    Under a research license with Glenn, Northrop Grumman is using NASA’s design drawings, materials specifications, and test data to develop selected electric propulsion technologies for their customer satellite systems.
    “Our partnership with NASA has been very successful in not only developing and testing this small electric propulsion technology, but in finding tangible applications for it,” said Mike Glogowski, Northrop Grumman Space Systems Fellow. “This new capability will enable extensive commercial near-Earth capabilities, including deployment and de-orbiting of small satellites in low-Earth orbit and station keeping and mission lifetime extension of satellites in geosynchronous orbit.”
    The company is currently testing their own variant of the SSEP system in Glenn’s Electric Power and Propulsion Laboratory vacuum chambers over the next two years and hope to launch their first mission using this technology in 2024.
    The SSEP project is jointly sponsored by Northrup Grumman, NASA's Space Operations Mission Directorate, Space Technology Mission Directorate, and the Science Mission Directorate.
    Nancy Smith Kilkenny
    NASA Glenn Research Center

    Last Updated: Apr 25, 2022
    Editor: Kelly Sands



    </section>
    Tags: Space Tech, Space Travel

    Charlie is
    100% political.
    Cudes mate… I have to ask if you actually understand the cut-and-pastes you keep posting? That's an ion thruster. They deal in thrust levels at the thousandths to hundredths of an ounce. That means they have no use whatsoever anywhere where there is air or gravity. I'm not reading yet another article on ion thrusters, (I've read dozens like it and probably even that exact one), but That picture you posted is of an ion thruster (Hall Effect, I think). The thrust they make is on the order of fractions of an ounce. The 12.5KW AEP makes.... less than a quarter ounce of thrust. That is not a typo. And that 0.22 oz is actually a TON for an electric thruster. Most are hundredths of an ounce. Somewhere down the road, the AEP team says they are expecting to be able to up it to six ounces of thrust. Again, not a typo. And from what I understand of ion thrusters, that is a VERY ambitious goal. As with tit-for-tat replacement of petro (cost, weight, range), with lithium ion, I'll believe it when I see it. It takes too much energy to make more than a few thousandths of an ounce, so a quarter ounce is revolutionary. And probably not sustainable. But we'll see.

    Ion thrusters with their extremely low thrust, will only work in space, where there is no drag, and over very very very long time spans, were even an ounce or two of thrust can build up a lot of speed... eventually... over many years of continuous operation.

    Apologies if you already knew this, but ion thrusters are something that will have ZERO application to our recreation or transportation lives or any kind of propulsion in atmosphere and gravity.

    -Peter
    Last edited by pcrussell50; 01-25-2023 at 03:26 PM.
    "padded wonder"
    __________
    the wet:
    Hydrostream Viper, 140 v4 crossflow, some Raker props
    16' Baja/Tahiti/Sidewinder clone, 135 v4 crossflow
    17' boston whaler alert, 90 merc fourstroke
    13' boston whaler, 40hp yamaha

    the dry:
    2003 bmw ///M5
    1993 mustang/griggs racing road race car
    and a handful of clunkers

  8. Likes laser_ED liked this post
  9. #726
    Join Date
    Feb 2004
    Location
    Palm City Fla
    Posts
    7,194
    Thanks (Given)
    0
    Thanks (Received)
    830
    Likes (Given)
    0
    Likes (Received)
    6489
    Mentioned
    13 Post(s)
    Tagged
    1 Thread(s)
    Well comodeadore, I asked a question about how much extra power the AC/heater used. Most would answer 5% - 25% more an hour, but you say .. a little bit. Then say something about people talking about things they don't know about. He11 you own one and haven't a clue how much extra battery it takes ... so I'll take it that you were talking about yourself ..

    I have no problem 4-strokes. I've owned at least one ... for the last 54 years. My problem is when "I'm told, I am not allowed to own a two stroke" See the difference, or have you been brainwashed into thinking this is no longer America ??

    Smelly, smokey, icky-poo ... two strokes .. LMAO .. Biotch .. don't cut a corner off you man card ... cut that ****** in half ..

    Two years ago, gas was cheap again. FJB declared war on fossil fuel .. that's why people are gettin shafted at the pump ... period !

    I do have agree, people in big cities don't know how to drive .. it seems they would rather leave the house and park in the middle of streets and highways.
    Before you send your kin folk down here, you should teach them that we only have one shade of green. When it does turn green that means it's time to go ..
    So for those that can't drive, maybe a golf cart is the perfect thing for them.

    ---------------------------------------------------------------------------------------------

    50 ... once again CRUP is wrong, However you just about quoted Joe P's exact words who was there and witnessed the run. I trust he remembers every inch of that run ..

    -----------------------------------------------------------------------------------------------

    As far as "everybody want's four stroke outboards" I only saw two boats with dunce caps .. the rest had crew cuts ..



    Gutfeld will be on in 15 minutes ... I gotta go ...

  10. Likes laser_ED liked this post
  11. #727
    Join Date
    Feb 2006
    Location
    Formerly Central WI/LOTO Currently PHX AZ
    Posts
    488
    Thanks (Given)
    60
    Thanks (Received)
    82
    Likes (Given)
    1237
    Likes (Received)
    421
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by pcrussell50 View Post
    Doing a little more digging on the Vision Marine web site, and using math on the specs they give:

    Vision Marine themselves, is smart. The only boats they sell, are displacement hull boats. For $55,000 You can pile them with tons of battery weight, and putz around the harbor at 5mph for hours like that with your wife or girlfriend, eating cheese and drinking wine. https://visionmarinetechnologies.com/volt-en/

    Their 180hp outboard "system" which includes the motor and two, 35KWh batteries (enough to go from 100% to zero in about half an hour if you are going full speed), is not available for sale to the public. Of course you don't have to use all 180hp.

    Again, they only sell the 180hp outboard as a system, to OEM boat makers. You and I can't get it. But it Looks like Four Winns has bitten, and says they will offer this drivetrain on their 22 foot H2 hull sometime this summer. They claim a top speed of 40mph. The petro version of this boat weighs 4100 lbs, can carry ten people, and 250hp. It will be interesting to see the weight, price, load carrying, specs for the 180hp battery version. Especially the price. Because Vision's 18 foot, 5mph displacement hull boat is $50-55K USD. But Four Winns does not have any specs up yet. Which seems odd if they are to begin selling them this summer. I have no facts to back it, but I have my doubts this will come off on schedule. Here if anyone wants to put money down and get on the waiting list.

    -Peter
    I don’t know if you’ve run across this but Shaun explains they’re 700 VDC per side and he starts the run at ~340 HP then backing down to about 300 HP.

    Most of the content you’re interested in is 5:30-7:38.

    A problem is only a problem when viewed as a problem...

  12. #728
    Join Date
    Oct 2002
    Location
    PARADISE /Naples
    Posts
    8,708
    Thanks (Given)
    60
    Thanks (Received)
    357
    Likes (Given)
    348
    Likes (Received)
    1440
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    Shaun said the day after the 104 MPH run they ran 109, started at 97 % battery ended up 83 % and could have made another run easly, all on $5.00 of electric, normal shore

    power for charging and this year plans on running faster than ANY outboard so that means 130 ish is their goal, COOL





    https://youtu.be/_s_MdvHaPdQ
    We have invented the world; WE see

  13. #729
    Join Date
    Mar 2008
    Location
    Tourist Trap, Florida
    Posts
    14,701
    Thanks (Given)
    380
    Thanks (Received)
    1280
    Likes (Given)
    5599
    Likes (Received)
    10934
    Mentioned
    2 Post(s)
    Tagged
    1 Thread(s)
    More power to them..... Nice to see that some people have lot's of disposable income. Cause they sure are throwing it away.

    83 V-King, 96 Mariner, 200 hp ff block 2.5 w/a 28p choppa
    We gotta clean this liberal mess up, VOTE TRUMP TO MAGA!
    Rebuild thread:
    http://www.screamandfly.com/showthre...-it&highlight=
    http://www.screamandfly.com/showthre...cs.&highlight=
    Videos

  14. #730
    Join Date
    Dec 2019
    Location
    Spring Lake MI
    Posts
    487
    Thanks (Given)
    2
    Thanks (Received)
    38
    Likes (Given)
    145
    Likes (Received)
    441
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    GM has seen the light and with their 1 billion to ICE development.

    It is very cool and fun to watch but it has no practical use as they display. We have been on the LiPo deal for 30 years now and it appears solid state is not the game changer everyone promises it will be.

    Some day energy storage will be there though and then it will become practical.
    TJ @ Baker Engineering
    Tuff 24 300xs
    Tuff 16 90 Yammie
    3.75@199mph with LSX power!!!

  15. Thanks pcrussell50 thanked for this post
    Likes pcrussell50, XstreamVking, powerabout liked this post
  16. #731
    Join Date
    Oct 2011
    Location
    Toronto area
    Posts
    67
    Thanks (Given)
    0
    Thanks (Received)
    2
    Likes (Given)
    0
    Likes (Received)
    45
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thank you Brad Zastrow

    "It is too easy to fact check you. You pick and choose your information to suit whatever conspiracy theory you are interested in. The automakers are going EV on many cars as the public is tired of gas prices. The Tesla uses a heat A/C pump. So, the cold weather is not really an issue on battery life. Extreme cold can affect the battery range a small amount. But I do not live in the Antarctic. There is always someone who talks about things they know nothing about and reports it as fact. I own a Tesla and it is not an issue. It could be long time before EV's replace trucks that tow or boats that need a lot of power but for a daily driver car or truck they are going to be major part of the market in the next few years. Now to address your worry of why consumers are buying 4 stroke OB's it's because they want them, including me. It is not a government play to force 4 strokes down our throat. More power, better fuel economy and better reliability. No smelly smoke to deal with on the older two strokes. The O/B market has exploded because of the new engines."

  17. Likes Speed Jr., JPEROG liked this post
  18. #732
    Join Date
    May 2009
    Location
    Santa barbara, ca/boulder city, nv
    Posts
    1,873
    Thanks (Given)
    556
    Thanks (Received)
    76
    Likes (Given)
    635
    Likes (Received)
    299
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by hellbents-10 View Post
    GM has seen the light and with their 1 billion to ICE development.

    It is very cool and fun to watch but it has no practical use as they display. We have been on the LiPo deal for 30 years now and it appears solid state is not the game changer everyone promises it will be.

    Some day energy storage will be there though and then it will become practical.
    Thank you for contributing. It sounds like you do your diligence in keeping informed. A large thread needs some people who are grounded in reality.

    GM’s investment: The 10,000lb SUV is almost upon us. Yay, lithium!!!

    Solid state: (According to Wikipedia): If you think lithium ion is expensive try SSB: ($100,000 for 20Ah), $500,000 for a Tesla capacity battery… JUST the battery, not the rest of the car. And so fragile that the torque on the chassis from angling into your driveway would break it. It’s also old technology. Some of the first batteries of any kind were SSB’s. The first SSBs came around in the 1800’s. They never made it, for the same reasons they are struggling today. Cost and fragility.

    Yes, Cudes posted a link to some car company in China that claimed back in Fall 2022 that they would be selling cars with SSBs by late 2022 early 2023. I feel like if that had happened and was successful, it would be worldwide headlines. Cudes? You posted the link? Any news? And why China? Why not in the West?

    Lithium is running into the end of it’s road. Maybe the future is SSB? But it seems like a rough go for it like it has been for the past 200 years that SSB has existed.

    -Peter
    Last edited by pcrussell50; 01-26-2023 at 12:04 PM.
    "padded wonder"
    __________
    the wet:
    Hydrostream Viper, 140 v4 crossflow, some Raker props
    16' Baja/Tahiti/Sidewinder clone, 135 v4 crossflow
    17' boston whaler alert, 90 merc fourstroke
    13' boston whaler, 40hp yamaha

    the dry:
    2003 bmw ///M5
    1993 mustang/griggs racing road race car
    and a handful of clunkers

  19. #733
    Join Date
    Oct 2002
    Location
    PARADISE /Naples
    Posts
    8,708
    Thanks (Given)
    60
    Thanks (Received)
    357
    Likes (Given)
    348
    Likes (Received)
    1440
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by pcrussell50 View Post
    Cudes mate… I have to ask if you actually understand the cut-and-pastes you keep posting? That's an ion thruster. They deal in thrust levels at the thousandths to hundredths of an ounce. That means they have no use whatsoever anywhere where there is air or gravity. I'm not reading yet another article on ion thrusters, (I've read dozens like it and probably even that exact one), but That picture you posted is of an ion thruster (Hall Effect, I think). The thrust they make is on the order of fractions of an ounce. The 12.5KW AEP makes.... less than a quarter ounce of thrust. That is not a typo. And that 0.22 oz is actually a TON for an electric thruster. Most are hundredths of an ounce. Somewhere down the road, the AEP team says they are expecting to be able to up it to six ounces of thrust. Again, not a typo. And from what I understand of ion thrusters, that is a VERY ambitious goal. As with tit-for-tat replacement of petro (cost, weight, range), with lithium ion, I'll believe it when I see it. It takes too much energy to make more than a few thousandths of an ounce, so a quarter ounce is revolutionary. And probably not sustainable. But we'll see.

    Ion thrusters with their extremely low thrust, will only work in space, where there is no drag, and over very very very long time spans, were even an ounce or two of thrust can build up a lot of speed... eventually... over many years of continuous operation.

    Apologies if you already knew this, but ion thrusters are something that will have ZERO application to our recreation or transportation lives or any kind of propulsion in atmosphere and gravity.

    -Peter
    Everything in that article was about SPACE exploration, I did not equate it to boating, this thread went sideways 3 months ago

    You pick and choose, to fit your narrative, from what I read up 7KW which is over 9HP in space with no drag is special, powered by the sun, no clouds in space

    Sorry new tech is too slow for you but that's life, your crossflows are archaic but that's you and no one is knocking them, 1981 to 1985 I was a fan also, MVP racing

    https://www.nature.com/articles/s41598-022-22789-7

    Who said it has anything to do with life on earth? but you? Solar Power is the subject

    They just hit an Asteroid to test an earth saving program to save all of us, they keep track of the big ones and are finally developing a way to save us in case one is headed

    our way and they used these to make numerous corrections and made it happen, Asteroids move very fast up to 64,000 MPH, quite a feat, bah humbug.
    We have invented the world; WE see

  20. #734
    Join Date
    May 2009
    Location
    Santa barbara, ca/boulder city, nv
    Posts
    1,873
    Thanks (Given)
    556
    Thanks (Received)
    76
    Likes (Given)
    635
    Likes (Received)
    299
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by CUDA View Post
    You pick and choose, to fit your narrative, from what I read up 7KW which is over 9HP in space with no drag is special, powered by the sun, no clouds in space.
    Uh yes. This is what I said. But it's nothing new. Ion thrusters were conceived in the early 1900's, tested in the 1950's or sooner, and actually tested in space, 59 years ago in 1964.

    You, as a known fanboi of batteries and futuristic things that you hope or dream or think are practically on our doorstep, post this picture of something that looks like a badass electric high thrust rocket or afterburner and people might be misled into thinking that, well, electric rockets of wide utility are practically on our doorstep. But yes, ion thrusters are a great way forward for unmanned deep space probes with missions that span decades.

    And, uh by the way... I didn't pick and choose to talk about ion thrusters that produce fractions of an ounce of thrust, in an electric boat thread... You did.

    -Peter
    "padded wonder"
    __________
    the wet:
    Hydrostream Viper, 140 v4 crossflow, some Raker props
    16' Baja/Tahiti/Sidewinder clone, 135 v4 crossflow
    17' boston whaler alert, 90 merc fourstroke
    13' boston whaler, 40hp yamaha

    the dry:
    2003 bmw ///M5
    1993 mustang/griggs racing road race car
    and a handful of clunkers

  21. Likes David - WI liked this post
  22. #735
    Join Date
    Oct 2002
    Location
    PARADISE /Naples
    Posts
    8,708
    Thanks (Given)
    60
    Thanks (Received)
    357
    Likes (Given)
    348
    Likes (Received)
    1440
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    If someone believed this had to do with boats, they must be incapable of simple reasoning, because these are the first words

    The path to the Moon, Mars, and beyond will require a fleet of spacecraft in many different shapes and sizes, including everything from massive rockets that produce millions of pounds of thrust to pioneering small electric propulsion thrusters that fit in the palm of your hand.
    For decades, innovators at NASA’s Glenn Research Center have been developing large, high-power electric propulsion (EP) systems that harness the power of the Sun to energize inert gases and turn them into extremely efficient thrust. Higher fuel efficiency means less propellant is needed, lowering launch costs while allowing spacecraft designers to reduce overall spacecraft weight to carry more payload mass, like technology demonstrations or more powerful scientific instruments.
    The agency’s primary EP efforts have centered on large exploration and science missions, like the 7-kilowatt (kW) NEXT-C gridded-ion system currently flying on the Double Asteroid Redirection Test mission and the 12-kW Advanced Electric Propulsion System used on the Power and Propulsion Element for NASA’s lunar orbiting space station known as Gateway.

    You talk like mister knowitall but don't read what your rereferring to ?
    then call me out ?
    Looks like everything you own is a clunker,
    Maybe change your screen name to
    CLUNKER old and run down
    But Mr.KNOWITALL is more apt
    We have invented the world; WE see

Page 49 of 77 FirstFirst ... 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 ... LastLast

Similar Threads

  1. World Speed record attempt for an electric aircraft on schedule.
    By Lake X Kid in forum The Scream And Fly Lounge
    Replies: 2
    Last Post: 09-18-2021, 10:45 PM
  2. Vintage Race boat world Record - $500
    By faztbullet in forum Ebay Listings and Other Internet Listings
    Replies: 2
    Last Post: 06-06-2018, 06:25 PM
  3. Electric boat record
    By FrenchPhil in forum Four Stroke and Direct Injected Two Stroke Engines
    Replies: 17
    Last Post: 08-22-2010, 03:41 PM
  4. New Pontoon boat world record
    By Rob King in forum General Boating Discussion
    Replies: 54
    Last Post: 10-11-2009, 08:21 PM
  5. World Record Boat
    By MRNOITALL in forum General Boating Discussion
    Replies: 33
    Last Post: 10-28-2004, 05:14 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Chris Carson's Marine