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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)
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| Subject: | [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
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| Subject: | Not mass balanced & cable failure |
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
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