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JamesN

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Posts posted by JamesN

  1. Did Anybody See...

    in Off Topic Discussion

    Posted

    oh yeh the tribute to dime was ace. thats the 3rd gig ive been to where theyve done a tribute to dime. but its more emotional when its a former bandmate who leads the tribute. its sad to think thats the closest to Pantera il probably ever get to see.

    isnt it just... the lad i went with gloatingly kept reminding me that he saw pantera before the split/murder...

  2. 5th Place

    in General Everton Discussion

    Posted

    either that or they turn it on. Arsenal always go mad on our arses when we play them and the end of the season. 7-0 springs to mind. Sure it won't happen this time tho! maybe 5 lmao.

    haha wasnt that the "coventry" season? Tony Adams bloody well scored that day if i remember rightly...

  5. Did Anybody See...

    in Off Topic Discussion

    Posted

    christ almighty that was one amazing gig. i was right at the front literally a foot away from phil i nearly died literally. one guy acidently elbowed me in the stomach winding me and as everyone was surging forward i couldnt breath lol. i managed to escape to a moderatly safe distance.

     

    i was stood on me mates shoulder during stone the crow. did you see me?

    unbelievable gig weasn't it?! had a brilliant time and did see someone sat on someone elses shoulders but couldnt tell you whether it was during stone the crow, was a bit worse for wear... When phil mentioned dimebags name the crowd went mental and then the opening riff from lifer kicked in it was game over haha... :D

  6. Did Anybody See...

    in Off Topic Discussion

    Posted

    Who's this ? System of a Down?

    No its just "Down"... Phil Anselmo out of Pantera formed a heavy metal "supergroup" with a couple of guys from Crowbar and Pepper Keenan from Corrosion of Conformity. If you are even vaguely into metal then check them out because they are unbelievable :D

  17. Guess The Album Cover

    in Off Topic Discussion

    Posted · Edited by Louis

    Crap thread i know but just a bit of fun, and yes, i am a) bored in work and B) have too much spare time on my hands...

     

    The game:

     

    Draw an album cover in MS Paint, post it up, see if others can guess what it is...

     

    Naturally, I'll go first...

     

     

     

     

    *edit* mods, how do i attach an image so it actually appears in the thread????

     

    [image removed, it's massive and there's not much space on TT at the moment so it's been removed - Louis]

  19. Will The Plane Take Off?

    in Off Topic Discussion

    Posted

    Well, having given it a little thought....this is a pure mechanics problem, and we must examine it in terms of forces applied on the plane.

     

    While still on the conveyor/runway, the plane is subjected to the following forces:

    Gravity, oriented downwards, constant.

     

    Lift, oriented upwards, function of airspeed.

     

    Thrust, oriented forwards, assumed constant.

     

    Drag, oriented backwards, superposition of air resistance and friction in the wheels.

    Obviously the plane will not take off until the force due to lift overcomes the force due to gravity. For this to happen, the plane must achieve some minimum forward velocity relative to the air. Forward acceleration will only occur as long as the force of thrust overcomes the drag force.

     

    Because the conveyor belt speed is the inverse of the plane's airspeed, we can say that the conveyor belt does not move until the plane begins to accelerate forward. Thus, rolling resistance has already been overcome by thrust when this problem really begins.

     

    Initially, the engine thrust is considerably higher than the drag—this is what allows aircraft to take off on regular runways. So the question is, once we start moving and the conveyor belt starts up, does it impose some force on the aircraft that can overcome the force of thrust?

     

    Certainly not initially. Consider the case where the aircraft has just begun to move through the air at, say, 1 m/s. The conveyor belt is then moving backwards at 1 m/s and therefore the speed of the aircraft relative to the conveyor is 2 m/s. If a 2 m/s rolling speed created enough friction to overcome the engines, then no aircraft could ever accelerate beyond this speed on a regular runway.

     

    In fact, we know that at the moment of takeoff the wheels are still on the ground and rolling and the aircraft is still accelerating. So up to that rolling speed at least, the engines still win the thrust vs. friction competition. Would rolling at twice that speed cause sufficient friction?

     

    Consider the thrust of an aircraft engine. I won't give you figures here because it depends widely on the type of engine. But... it's a lot of force. Now contrast this with rolling friction. I'm guessing here, but I think that before a wheel could provide enough friction (without using the brakes) to completely counteract an aircraft engine at full throttle, the wheel would be spinning so fast that it would come apart. At any rate, it certainly would not reach this tremendous amount of friction at a rolling rate twice that of a standard takeoff speed.

     

    The airplane would take off normally, with the wheels spinning twice as fast as normal and a *slight* reduction in acceleration due to added friction.

     

    I think where people get thrown off is the idea that if the conveyor is moving backwards and the plane is on the conveyor, then this must translate to some backwards momentum that has to be overcome by the thrust. But of course the conveyor doesn't start up until the plane is already moving forward. It is the conveyor that must overcome the forward momentum imparted by the engines—and the forces just aren't comparable.

     

    That's my opinion anyway ;) . I'm sure you may be able to find someone on the internet who agrees with me.....almost word for word I shouldn't wonder :P .

    lol good answer... well thought out and explained :P

  20. Will The Plane Take Off?

    in Off Topic Discussion

    Posted

    Got this off another forum, but it's an interested question:

     

    Heres the scenario...

     

    An airplane is on a conveyor. The conveyor is set to match the speed of the airplane in the backwords direction. However fast the plane moves, the conveyor moves just as fast.

     

    Can the plane take off?

  21. Fiorentina (home) 2nd Leg

    in Match Days

    Posted

    Can't wait for this now! I think i'm on row e in the glwadys or something like that... my dad sorted the tickets for this one though so i could be wrong.

    Anyway, I reckon 3-0 is the only scoreline I can hope for because i can't see us scoring any more than that and i think if they score at any point it will all be over.

    3-0 to the blues,

    Pienaar, Yakubu and Lescott

    COYB!

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