As a Non-Engineer working in Experimental Aircraft R&D I find Composite Design a great tool...It saves me Hours of work by letting me play with Composite Skin and Spar Layups for Wings and Rotor Blades before I start Prototyping. The biggest drawback from the Aircraft side is the lack of proper Tube Geometry. Currently I have to analyse a potental Layup with an Ellpise and a Rectangle so my "True" numbers lie somewhere inbetween. The addition of a "Teardrop" form would help all of us that play with flying things.... Another suggestion for us "Aircraft" guys would be allowing us to place a Spar "I Beam" into the Wing section and then calculate the Maximum Deflection based on the Spar stiffness in conjunction with the Skin Properties. These two features would in my opinion reveloutionize Composite Design for those of us who don't work at Boeing or Airbus and have access to (or know how to use an FEA Program).
