Thread Tools
This thread is privately moderated by phil alvirez, who may elect to delete unwanted replies.
Sep 12, 2013, 04:44 PM
Registered User
Thread OP
Discussion

Thermalis Too-a 2 mt e sailplane


finished the 2nd version of Thermalis, as i lost the 1st in the fog. changes include a more powerful motor, servos in the fin, and a little bit more tip dihedral. 30 grams heavier due to the new motor (see details of the Mk 1 on page 2 of this blog)
this time i covered the whole wing in red, instead of yellow tips of the 1st 1, to improve visibility, and covered the fuselage and stab white, and the rudder/fin black. canopy held in place with velcro, and some maple leaves in dayglo trim. they really glow at distance!
Thermalis is an idea of an electric sailplane for soaring in calm to moderate wind. it has 80" wingspan and 10" chord almost to the tip, and 764 sq in; now weighs 956 grams (33.5 oz) with a 3x1400 mah pack.
the concept: a simple sailplane for rudder and elevator-no ailerons, for relaxed flying and getting into thermals (hence the name), in moderate wind conditions. the wing is 1 piece polyhedral and the fuselage is box type, 1/8" solid balsa, like the horizontal tail and rudder. another feature that i added was the t tail, that improves the stability and makes the response more precise, as the stab is clear from the wing's wake.
am happy with the way the plane flies. very stable, and needs very little throttle. as a consequence the pack lasts longer. somehow flies different-but better. i believe that planes have personality, and when building the same, no matter how accurately you build it, each 1 behaves different.
oct 12, 2013: today i got back the mk 1 and am in the process of restoring it.
oct 21: ready and waiting for a window in the weather to try it.
Last edited by phil alvirez; Oct 21, 2013 at 11:38 PM.
Sign up now
to remove ads between posts


Quick Reply
Message:
Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Question Looking into building something, but what is too big? MaydayMayday Electric Heli Talk 77 Jan 12, 2013 01:16 AM
Discussion Time to ban the BOOZE too Ratracer Life, The Universe, and Politics 4 Jan 05, 2013 12:32 AM
Discussion thermalis-a 2mt electric soarer phil alvirez Thermal 4 Nov 28, 2012 07:48 PM
Complaint Thumbnails still too large! Thumbnails still too large! Thumbnails still too large! wizzinbya Site Suggestions / Complaints 0 Apr 16, 2011 12:20 AM