RE: Catapult glider question

From: hermann andresen <hermanna_at_hotmail.com>
Date: Fri, 26 Aug 2011 02:21:38 +0000

Sounds like high hook and/or low grip resulting in neg incidence launch & dive into stick.

Could also be stick if it protrudes past rubber. Should be like wooden thumb with rubber over the top.

Rear grip overkill & compromises glider.

Good luck,
               H


To: Indoor_Construction_at_yahoogroups.com; freeflightml_at_yahoogroups.com
From: Warthodson_at_aol.com
Date: Thu, 25 Aug 2011 16:13:01 -0400
Subject: [Indoor_Construction] Catapult glider question


















 



  


    
      
      
      
Last year I built my first indoor catapult launched glider. It was sort of based on Kurt Krempet's plans on his web site. It was intended for use in a Cat. 1 or 2 site. After a few horizontal test flights & adjustments I determined it was time to launch it vertically. The first launch it hit the "launching stick" (does that stick have a better name?) & almost destroyed it. After repairs, I tried again. This time it hit the stick again & was completely destroyed. I located the rubber hook near the nose & the grip was located under the wing. I am thinking of building another one this year. I was told I should locate the hook under the wing & the grip behind the stabilizer. What do you think was my problem? Now there is an opening!


Gary Hodson






 


    
     

    
    






                                                 
Received on Thu Aug 25 2011 - 19:21:46 CEST