|
Title: [HELP] wing struts Post by: aniket210696 on April 25, 2013, 07:57:13 PM hi!
so as some may know, i am finishing up on my cessna 150, but i recently came across some Problems while building... on the first flight, there was too much lift, and the shoulder of the wing was weak, and so, the wing folded mid air, causing the aircraft to come crashing to the ground... i have strengthened the wing now, but i want to install struts under the wing to make it stronger... any suggestions on how to make them and what material is best for them?? thanks, Aniket PS: i have tried wooden chopsticks so far... :P Title: Re: [HELP] wing struts Post by: saikat on April 25, 2013, 08:20:08 PM Struts are not required if you can adequately strengthen the dihedral joint.
Secondly before you go for a full power launch this time .... Glide the plane from shoulder height over some longish grass ... This will give a idea of the basic trim Title: Re: [HELP] wing struts Post by: aniket210696 on April 25, 2013, 08:24:37 PM @saikat.... when i first flew the plane, it was a ground takeoff.... throttle was at 80%, and with a slight elevator,(50%) it went vertical. i gave corrective elevator, and thats when the wing snapped upwards.. so far i have tried strengthening the dihedral, but no luck... so i want to keep struts....
thanks! aniket Title: Re: [HELP] wing struts Post by: saikat on April 25, 2013, 10:21:31 PM It sounds like you had the cg too far back
keep it at 30% of chord Title: Re: Re: [HELP] wing struts Post by: aniket210696 on April 25, 2013, 10:57:49 PM @saikat.. Yup.. I just balanced it now... It tips backwards when balanced on the thickest part of the wing
Sent from a potato using a lamp |