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Bruce Tuncks

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Everything posted by Bruce Tuncks

  1. Bruce Tuncks
    I wish that your opinion of judges was true, Onetrack. Alas, bitter experience has shown me otherwise. Hopefully, they will wheel out one of the better judges for this case.
  2. Bruce Tuncks
    The Alice Springs gliding club regularly uses the Stuart highway and the Tanami highway for outlanding gliders. Anywhere else and your wings will be ripped off. On a big day, they can set a task which goes up one highway and then crosses to the other during the strongest part of the day, when you are flying over unlandable scrub but with 10,000 ft agl climbs and in a 35 to 1 glider. At Gawler, we have the freeway as an option for some engine out events, but this has never been required. I reckon the cars would not run into you just as they mainly miss each other. I have never seen a plane actually landing on a road though, so thanks for the video. Yes, there sure are a lot of signs etc to avoid.
  3. Bruce Tuncks
    I agree with flyboy. Why did he do it? What had been done to him? Personally, I was surprised that he was an airline pilot cos I sort of assumed that they had to be basically sane.
  4. Bruce Tuncks
    I know that examples prove little, but here are 2 examples of what you just posted Walrus. 1. A glider pilot with type 1 diabetes sat in his glider for hours without getting it to the take-off point. This caused the take-off crew some concern, but the fact turned out to be that he felt crook and decided not to fly. The point is that us recreational pilots don't have to fly if we are not up to it. In fact this guy has many hours of warning of an upcoming attack. Now CASA would assume that this guy was a retard and say that he had to be grounded... how nasty. 2. An old tug-pilot ( who had a current medical at the time ) had not flown for 2 weeks. He said he felt crook and in fact died a few days later. Again, he was the best judge of his condition.
  5. Bruce Tuncks
    I gotta say Turbs that you have the govt on your side, but I personally will never accept some third party carrying any responsibility for my actions. There is the exceptional case where you may be minding a retarded child, but in general we have to have liberty not safety. There is a quote from Benjamin Frankelin... "Those who would trade essential liberties for temporary safety will finish up with neither"
  6. Bruce Tuncks
    I mentioned ladders because they are the most dangerous item around. Harry Schneider survived being a German soldier in WW2 and then a glider test-pilot for 30 years. He nearly died when he fell from a ladder. And bowls is the most dangerous game in Australia, based on mortality figures. Pro rata, more people die playing bowls than any other sport, including parachuting.
  7. Bruce Tuncks
    Turbs is falling for the "flying is especially dangerous" line. You will see the problems if you apply the same arguments to other pursuits. For example ,ladders, playing bowls, driving to church on sunday. Why single out flying for the draconian application of liability rules? Here is a clue... the ONLY innate fear a newborn baby has is falling. For myself, I am happy to be responsible for harm and damage I do. What I don't want is for some stupid bureaucrat to fence me in with stupid rules which assume I am a complete idiot.
  8. Bruce Tuncks
    Once I was going to an aboriginal settlement out of Alice Springs with 2 tradies in a govt ute. Then smoke came from under the hood. One guy got the extinguisher out while the other guy lifted the hood on the signal from the extinguisher guy. Well the plunger came right out of that extinguisher, so we retired and waited under a gum tree. Then the fire went out and the ute started ok.
  9. Bruce Tuncks
    Going further, 1.33 cc/sec water turns into 1.75 litres of water vapor which dilutes the incoming 55 litres/sec of air but not by too much. IF these calculations are correct, they indicate to me that the 80 cc/min water injection is about right.... significant cooling and not too much dilution.
  10. Bruce Tuncks
    Thanks Aro, You may have found the mistake.
  11. Bruce Tuncks
    Thanks Nev, and you are right. But that correction will leave even less air to be cooled so the new figure will be worse.
  12. Bruce Tuncks
    Here's how I got the 55 l/sec. A 2200cc4 stroke sucks 1100 cc/rev and 3000 rpm= 50 revs/sec. So the engine sucks in 1.1times 50 =55 litres/sec. Please keep trying, there is something wrong somewhere. It's the tiny weight of the air sucked in per second that throws the calculation off.
  13. Bruce Tuncks
    I agree about the 40 degrees
  14. Bruce Tuncks
    Well I tried to work out the theoretical temp drop but I must have got it wrong.... help needed! Here's my attempt: 80 gm/min= 1.333 gm/sec and the latent heat of vaporization is 2260kJ/kgK so we have 2260*1.333*1/1000=3kJ/sec cooling . Air/sec for a 2.2l engine at 3000 rpm = 5.5l/sec and air weighs 1.293 kg/mcubed therefore 3 kJ will cool the airflow by mass/sec times specific heat of air times temperature drop. SO delta T= 3/(5.5*1/1000*1.293*1.005 =419 C !!!! Well I don't believe this answer cos its too high intuitively. But I tried!
  15. Bruce Tuncks
    Why, Geoff H? Cos very few have your analytical skills and so they think electric = zero emissions. But IF you were to charge your car from solar panels, AND if those solar panels were themselves made from green electricity, then the figures for the tesla improve huh.
  16. Bruce Tuncks
    It should be possible to calculate the intake air cooling by working out the volume of air per sec and applying cooling due to water vapourization to this. I'll give it a try when I'm more composed. A smart guy could also adjust for the dilution of the inflow air with the water vapor. Don't think I'm that smart.
  17. Bruce Tuncks
    Great stuff old K. I reckon you have solved the problem with spectacular success. Sorry I can't suggest a reason for the egt's being high. Maybe Nev's suggestion about adding some methanol will work. Darned if I can see why though. Anyway, the whole thing was to use as little water as possible to achieve the bit of cooling needed, and you have done this.
  18. Bruce Tuncks
    I have found that keeping the blue plane on the pink line works well too. But bugger, that needs gps and stuff.
  19. Bruce Tuncks
    Funny how I found out about the plastic bag business here and not from CASA.
  20. Bruce Tuncks
    I don't disagree guys, but I know you can reduce your water needs by seeking solid shade and resting during the hot part of the day. I have no idea if this would reduce your requirements below 1 litre per day.
  21. Bruce Tuncks
    I reckon 260 is too high even for a lycoming head. I think this was the gist of the webinar.
  22. Bruce Tuncks
    Yenn, god forbid that I seem like Morrison to you. Please Thruster enlighten us here.
  23. Bruce Tuncks
    I once watched in awe as these tree feller guys cut down a big tree near us... the main guy climbed the tree then they roped limbs with the rope going up n over. He then chainsawed the limb off and they lowered it to the ground. My main problem with these guys is their cost... thousands of dollars!
  24. Bruce Tuncks
    Like I hope to never find out how it feels when your plane is on fire.
  25. Bruce Tuncks
    Well an electric saw will shut down faster I hope... Mainly I hope to never find out what it feels like to fall from a tree with a running chainsaw.
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