Today's Message Index:
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1. 12:01 AM - Re: LAA enginering (Thruster87)
2. 03:35 AM - Re: UK LAA mods - official information (Pete54)
Message 1
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| Subject: | Re: LAA enginering |
Any rumors out there with respect to the following from Zenith;Regarding the 600
KG Zodiac, Zenair has indeed recommended reduced speeds and weights
to catch people's attention (we really, really need to stop these accidents due
to over-loading
the aircraft). We will come up with an officially sanctioned (unlike the UK one)
"Zenair
modification" in order for pilots to operate the aircraft up to the full LSA limits
(i.e. MTOW
of 1,320 lbs with a safety factor of 1.5+)
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=261372#261372
Message 2
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| Subject: | Re: UK LAA mods - official information |
I can add a little info on the C of G and trimmer issues from the LAA.
Back in February there was talk from them of slowing down the trimmer. The UK
aircraft all have to have the large elevator trim tab. This gives a lot of trim
authority and was 'necessary' for the initial UK acceptance. CZAW added the
flap interconnect and many aircraft (like mine) have both.
There was a flight test programme which extended the c of g range to 530mm from
455. During the recent trials the interaction between the interconnect and larger
trim tab showed the potential for the longitudinal stability to be compromised.
The quick and dirty solution is to de-power the trimmer by turning the
horn around. Apparently removing the interconnect increases the longitudinal
stability quite a bit. We'll find out when we get to test fly the aircraft.
We'll have to carry out all the mods to get clearance to fly - that is just the
way things are in the UK. Once we are flying there may be some potential for
optimisation but after nearly 11 months of being grounded I'm just going to roll
with it.
I have flown my aircraft with the c of g at around 500mm, it felt pretty 'relaxed'
and needed careful attention to pitch control. The rumour is that the UK
aircraft modified so far need a little nose ballast to stay within the c of g
limits.
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Pete Morris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=261375#261375
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