andrewstewart

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Everything posted by andrewstewart

  1. andrewstewart
    Er... are you actually even *reading* what I'm saying? PD don't say "elliptical" when describing the Sabre2 precisely BECAUSE of marketing reasons. Regardles, the Sabre2 *IS* elliptical by the definition given to me which is quoted in my original post. We're splitting hairs here. - Andrew
  2. andrewstewart
    Thanks PhreeZone for those links. Much appreciated. - Andrew
  3. andrewstewart
    Just because PD doesn't mention that it isn't elliptical, doesn't make it not so ;-) According to the definition that I was given (and quoted in my original post) it *IS* elliptical. Any other description is just marketing speak... The point of my post was to say: "okay, so if these canopies are all 'elliptical', what other factors contribute to their performance in addition to degree of taper?". - Andrew
  4. andrewstewart
    A very good point! I was focusing too much on the method of calculation rather than the reality of the situation. Thanks, - Andrew
  5. andrewstewart
    Is there any documentation online or in a book that I can learn about trim, airfoil design, planform, aspect ration, angle of attack, etc? Canopy flight school / pilots training / rigging courses are all beyond my financial capabilities at present! So Internet or book based materials would be ideal. Thanks in advance, - Andrew
  6. andrewstewart
    With all due respect, as the quote in my original post says - they are both elliptical. I do appreciate however, that canopy manufacturers (specifically PD in the case of the Sabre2) prefer to use terminology other than 'elliptical' for marketing reasons. I was trying to get to the reasons other than taper that contribute to the level of "performance". Cheers, - Andrew
  7. andrewstewart
    Hi, To be accurate, shouldn't the weight of your canopy be excluded from the value for suspended weight when calculating wing loading? ...or am I just being pedantic? :-) - Andrew
  8. andrewstewart
    Hi, I am told by an experienced individual that "any canopy that does not have exactly the same rib section in every cell is elliptical". Given that, what is the real difference between say a Sabre2 and a Crossfire2 other than the degree of taper? What factors contribute to the differences in the ways the canopies behave - given their separate design goals? Many thanks in advance! Regards, - Andrew