Notices
Results 1 to 7 of 7

Thread: "Harvesting" friction?

  1. #1 "Harvesting" friction? 
    Forum Freshman Escalefter's Avatar
    Join Date
    Oct 2006
    Location
    Ohio
    Posts
    6
    I'm "creating" a creature (actually just drawing it, but I want it to be almost like a bluprint with some sound scientific principles). I want to have a flying creature with a special outside shell. The general structure is very odd and doesn't need to be explained but basically I want this creature to actually get some energy from the heat that's generated by the friction from air resistance. This was basically my idea:

    The surface of the "body and wings" would be made of a hard surface that's actually a series of regularly spaced loops (like the hard side of Velcro only loops instead of hooks), with a pore spaced in between each loop. As the creature dives through the air, the air particles that rub against the surface generate heat. In rapid motion, cool pegs actually located beneath the "shell" poke through each regularly-spaced pore, and the part that pokes through touches these thick loops, now packed with heat energy from the friction. It would then submerge and carry that super-heated portion to an area that converts this thermal energy into mechanical energy that would be used to actually move the "wings" and such.

    Of couse this structure would have to be incredibly stable and hard, the loops at the right angle to avoid being snapped off. They'd have to be rather thick, and even still...

    Another issue is that the "pegs" (substances that stick through the pores to collect the heat) would have to be cool enough to conduct that thermal energy. And, it would take some kind of effort to cool them down again. Is there some kind of conservation of energy rule that applies to such a system?

    If this creature is using no energy with its actual "wings" and is just dive-bombing, could it actually collect a surplus of energy by simply generating this frictional heat? After all, it's coming from the air particles, not collisions caused by it exerting itself.

    I know we probably don't have the technology to do this, but as a visual artist with a passion for science, I'd like to know how feasible it is.


    Reply With Quote  
     

  2.  
     

  3. #2  
    Forum Senior
    Join Date
    Sep 2006
    Posts
    399
    It sounds ridiculous to me, typically energy converted to heat is not useful (apart from for heating things up)


    Reply With Quote  
     

  4. #3  
    Guest
    SHOULD BE MOVED TO PSUEDO SCIENCE!

    It's not feasible. It's crap. It's clear you have proposed this without even a smattering of physics knowledge.
    Reply With Quote  
     

  5. #4  
    Forum Freshman Escalefter's Avatar
    Join Date
    Oct 2006
    Location
    Ohio
    Posts
    6
    What about energy generated from steam? I mean, we just try to use the heat by burning things instead of soaking it up with a heat conductor and putting it under some water to let it evaporate and move something...

    Other than that defense, I sincerely apologize for cluttering your forum with crap. You know, I really don't know a whole lot about physics, and I'm actually not very old. My teacher seemed to think that it has some interesting implications, especially for an alien world. But you will see that I'm not actually proposing we try to build something like this.

    But I don't like this cold welcome I get from this forum. Each time I post something, will people see me and think "that's the one Megabrain beat into the ground on his first day-- mustve been a real loser"...

    Should I go to a middle school science forum to find out why this wouldn't work or something?
    Reply With Quote  
     

  6. #5  
    Guest
    Well do forgive the cold welcome, it is impossible to tell how old you are, and from your very mature grammar I had thought you to be much older nobody will think you are a loser but we do have a special section for what we call psuedo science. Your idea will not work because of several reasons, you will need energy to take off, this cannot come from the wings as they will not be 'hot' to start with. When it is flying only a tiny amount of heat energy will actualy be transferred into the body, mostly any hot air will just be lost or blown away. Making the wing rough will produce heat but it will produce more drag.

    Try reading this link, it's about airplanes that only uses solar power to fly, maybe you can modify your idea, NASA.Gov developed this and others.

    http://www.pvresources.com/en/helios.php
    Reply With Quote  
     

  7. #6  
    Forum Freshman Escalefter's Avatar
    Join Date
    Oct 2006
    Location
    Ohio
    Posts
    6
    Quote Originally Posted by Megabrain
    Well do forgive the cold welcome, it is impossible to tell how old you are, and from your very mature grammar I had thought you to be much older nobody will think you are a loser but we do have a special section for what we call psuedo science. Your idea will not work because of several reasons, you will need energy to take off, this cannot come from the wings as they will not be 'hot' to start with. When it is flying only a tiny amount of heat energy will actualy be transferred into the body, mostly any hot air will just be lost or blown away. Making the wing rough will produce heat but it will produce more drag.
    Hm, I remember I was going to put that it would have to have some of its own chemical energy because it would need it in order to get up high enough to dive in the first place. And it seems like if the pegs would be cool enough each time they re-emerge the heat would almost always want to go into them instead of in the air, but I think I'll ask the pseudo-science forum instead.

    Sorry about this, low self-esteem ftl...

    As for my grammar I typed this into Word first to get spelling and grammar right, hehe.
    Reply With Quote  
     

  8. #7  
    Forum Professor
    Join Date
    Oct 2006
    Posts
    1,595
    escal; what your suggesting for an animal, is being explored in science, but for flight. the use of air is also incorporated into newer forms of jet engines and the efficiency of these engines has dramatically increased.
    these were perfected by General Electric and may have some ideas for your animal.

    i might also say, friction can and is used in the production of energy. someday some of what your thinking may be a reality. it is not likely going to be for animals, certainly not birds, since there efficiencies rank quite high.

    this is a tough forum, but if you accept constructive criticism, which you will need to, with a passion for science, its a good place to test your ideas.
    Reply With Quote  
     

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •