---------------------------------------------------------- Aviation-List Digest Archive --- Total Messages Posted Sat 12/29/12: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:45 AM - [Aviatia.ro] =?utf-8?q?Geci_/_Jachete_de_avia=C8=9Bie? () 2. 03:50 AM - Not mass balanced & cable failure (SteveJeff) ________________________________ Message 1 _____________________________________ Time: 03:45:05 AM PST US From: Subject: Aviation-List: [Aviatia.ro] =?utf-8?q?Geci_/_Jachete_de_avia=C8=9Bie? S=C4=83rb=C4=83tori fericite =C8=99i La mul=C8=9Bi ani aviatici !" " Mai an=C8=9B=C4=83r=C8=9B se publica un anun=C8=9B despre o ofert=C4=83 de geci de avia=C8=9Bie dup=C4=83 modele consacrate. Are cineva posibilitatea s=C4=83 transmit=C4=83 vreun contact ? Cu mul=C8=9Bumiri! ________________________________ Message 2 _____________________________________ Time: 03:50:48 AM PST US Subject: Aviation-List: Not mass balanced & cable failure From: "SteveJeff" I found that many certified LSA aircrafts and some standard FAR 23 certified don't have mass-balanced surfaces. I'm interested in how they are designed to show freedom from flutter, especially control surface flutter and if these aircrafts can handle a disconnected freefloating aileron emergency (due to cable failure, for example). If they are not prone to develop flutter in normal operation, how things may change if, for example, the aileron cable fails? You are right, the limited speed of LSA is a big factor to avoid flutter in normal operation, so it may not be necessary to have mass-balanced surfaces. In normal operation, the aircraft was flight tested for flutter and also in normal service there were no flutter occurences. However, the question is, how things change in a cable failure in these aircrafts? Even if it's a very rare occurence, from time to time cables may fail. I'm wondering especially about an aileron cable failure, when the aileron is disconnected and freefloating, how prone is to flutter? Is this scenario, is it at risk to (violently) flutter? As about FAR 23 aircraft, for example, American Champion series (Scout, Citabria..) have no mass-balanced surfaces, especially ailerons. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=391132#391132 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aviation-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Aviation-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aviation-list Browse Digests http://www.matronics.com/digest/aviation-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.