Thread Tools
This thread is privately moderated by phil alvirez, who may elect to delete unwanted replies.
Mar 18, 2018, 12:51 AM
Registered User
Thread OP
Discussion

thermals-where?


thermals-where?
i have flown at thermals that start from the ground, and others at the base of a cloud.
from the ground, i have flown hand launched gliders (free flight) and watching for the breeze to flow and stop have been able to detect the cycle and launch at the right time.
from the base of the cloud, with r/c electric gliders.
from the ground, there is no doubt that they start at ground level and keep raising. some say as bubbles, others as cones.
and seem to increase in diameter and strength as they raise.
but those that are found at the base of a cloud seem to behave different.
sometimes the plane stays under the cloud. others, they get into-and disappear. that means they keep climbing.
and in the case of those that remain at the base of the cloud, sometimes getting a little bit lower there are no thermals. they sink.
so seems that they are created by the cloud itself and only at that level.
am posting it with the intention to hear from those with some experience on the subject.
please only comments polite, positive and to the point.
i started a thread here-lets see if some1 brings positive comments: https://www.rcgroups.com/forums/show...thermals-where
Sign up now
to remove ads between posts
Jun 14, 2018, 02:48 AM
Registered User
minirotor's Avatar
If you manage to climb to the bottom of the cloud just as that cycle is dying, then the glider will not get any heighter.
Usually small puffy clouds only last 20mins or so.
But sometimes on a more hotter unstable day...other thermal bubbles(there is usually no continious thermal from ground to cloud) will converge on the same cloud.
Sometimes even making a thunderstorm.
May 30, 2019, 05:22 PM
Registered User
Thread OP
that makes sense.
great comment.
thanks


Quick Reply
Message:
Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion thermals-where? phil alvirez Thermal 17 Jul 02, 2018 10:25 AM
Discussion Where thermals lurk Screamin' Eagle Hand Launch 20 Jul 01, 2006 09:36 AM
Discussion Where to buy Cox fuel for my Norvel .061 on my 100" Windrifter thermal glider? aviator1zz Fuel Plane Talk 4 May 02, 2006 09:20 AM
Where to find 3 R's of Thermal Soaring H-tail Sailplane Talk 5 Apr 01, 2005 05:05 AM
Where can I get thermal paste? brianb10 Power Systems 8 Dec 06, 2004 10:54 PM