Weight rules discussion (list revisions)

[Wayne Galligan]

Buddy,

I hope to prove something on the wing loading theory this weekend.  I made a new set of wings for my Aries.  Two things will be tested as a result of this change.

1. Wing area has been reduced from 1100 sq in to 1025. wing span was reduced about 2.5 inches.
2. Over all weight of the airframe has been reduced 13 oz(yes 3/4 of a lb) and there is room to reduce more new c.f. pipe from Lance (about 2.5 oz)

I also made the ailerons 2" longer to the inboard side.

I hope to accomplish a couple of things.  Improve snaps and slow flight characteristics.   I had been having a problem with the avalanche snapping consistently and if I flew to plane off throttle too much it would sometimes get mushy in attitude.  My Aries did have good wind penetration the spins where solid and predictable. So I will also be able to see how much the weight reduction will change some of these conditions.

I was at 11lbs 6oz  after the first rebuild so now the plane will be NATS legal...  and with the right wind I will be going to the NATS this year.  

Later,

Wayne 

 
  ----- Original Message ----- 
  From: BUDDYonRC at aol.com 
  To: discussion at nsrca.org 
  Sent: Friday, February 25, 2005 8:44 AM
  Subject: Weight rules discussion (list revisions)


  In order to update and include items for consideration listed in my previous post please add the following comments, questions, proposals and opinions to my list.

  44. Revise the weight rules to allow a higher weight limit in the sportsman and intermediate classes.
  45. Change the wording in the rule to allow for marginal overweight to be legal at all contests except the Nationals where the letter of the current rules would be enforced.
  46. Increasing the weight of a pattern design will result in an advantage because heavier airplanes fly better in the wind.
  47. Change the rules to provide a minimum weight limit and add a limit on power with a handicap penalty for exceeding the power limit.
  48. Current FAI patterns dictate that heavier wing loading is required to achieve optimum performance.
  49. Why should a twelve and a half pound airplane be illegal in pattern?
  50. Pattern design requirements are an ever changing target driven by revisions to the complexity of the patterns that we fly. When new maneuver patterns are adopted optimum design requirements will change accordingly.
  . Power loading and wing loading is an integral part if optimum design.
  52. If and when FAI weight rules are changed will AMA rules be changed accordingly?
  53. Considering current designs Is it true that current wing loading utilizing optimum design is 1.10 pounds per 100 square inches of wing area and if so is it not also true that a twelve pound optimum design would have 1090 square inches of wing area. 

  I will continue to add items to this list as they are brought forward in an effort to enable those interested to achieve a true prospective concerning the subject at hand.
  Buddy      
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