phoenixlpr

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Everything posted by phoenixlpr

  1. phoenixlpr
    I was not motivated enough to make my own model about the deployment of a canopy, but I have found this scientific publication: Parks College Parachute Research Group Outline of the presentation at the 2001 Parachute Industry Association Symposium It is worth reading. So blowing up because of overload is just an unconfirmed a myth.
  2. phoenixlpr
    And Is altitude insurance?
  3. phoenixlpr
    That can be true. I think the blow up is a myth.
  4. phoenixlpr
    Heavier load had longer opening time and high average opening forces, but peak forces were the same in your previous simulation.
  5. phoenixlpr
    It could work really well on your Crossfire.... I doubt that your canopy has a similar recovery like mine. It has a short and positive recovery, why should I force it even shorter?
  6. phoenixlpr
    Good for you! I have tried to roll up my canopy when it was brand new. It sucked too.
  7. phoenixlpr
    Does it matter if you can not pack it (yet)?
  8. phoenixlpr
    I really don't know what you mean. I've jumped it, check first post.
  9. phoenixlpr
    I'm sorry but I don't have love and hate relationship with my reserve canopy.
  10. phoenixlpr
    Your calculations are incorrect opening time is depending on the deployment speed and suspended weight. It shows what you want to see.
  11. phoenixlpr
    Those guys have faith in their packjob. Packing is a religion.
  12. phoenixlpr
    Does not make nay sense. Packing fast does not mean that you make a mal. Opening a packjob does not show every problems. You don;t know how good your packjob is useless use it.
  13. phoenixlpr
    Why to cut a perfectly good canopy away?
  14. phoenixlpr
    Where has your data set coming from? As you see the peak forces are the same. AFAIK textiles are rate by the peak break force.
  15. phoenixlpr
    AFAIK nothing special.
  16. phoenixlpr
    In any case, but that is not depending on the mass We assumed that we don't exceed maximum deployment speed. That was not a question.
  17. phoenixlpr
    That is a kindda interesting. I happen to read his book of canopy piloting. I have a canopy with positive recovery arc. So? If I a bit lower about/dig it out, if I a bit higher extend the dive a bit.
  18. phoenixlpr
    I have not noticed that. I can do a 180 degrees front riser turn easily, but I think I can not pull my front risers down in recovery phase. Up high is between 600m and 900m. My goal is executing the turn that my canopy is planing out by itself. IMHO that is the optimal way. It is possible to flatten out earlier, but that a waste of energy nevertheless it can save from crashing into the ground.
  19. phoenixlpr
    Nope. You have just gained more experience on packing.
  20. phoenixlpr
    Your insult is not a proof or not even an argument. It could be a sign showing you are incapable to describe the your point using the tools of physics.
  21. phoenixlpr
    Drag (physics) F=m * a is one side of the equation. Here is the other side: F = c * A * v^2 where A is the area of the canopy V is the speed c is a coefficient m * a = c * A * v ^ 2 As you see lager acceleration/deceleration belongs to bigger mass,because forces in this system does not depend on the mass of the system. c is deppending on the shape, air desity.... A the area of the canopy is constant V is the deployment speed
  22. phoenixlpr
    Deployment speed is the limit for opening. Flight characteristic is depending on the suspended weight. Think about basic physics. You may end up with similar conclusion. IMHO the overloaded reserve blowing up on opening has no base, that's just a myth.
  23. phoenixlpr
    Wow!
  24. phoenixlpr
    Sorry, it was Time Competition - Heavy Class
  25. phoenixlpr
    You'd rather start drawing. Forces are not larger just takes more time.... Force of deceleration is the air resistance of the canopy. Air resistance is depending on the speed, surface and resistance quotient only.