That's why you have the loop
in the line, the tether never even gets close to the support
line and if it cuts through the loop Great!
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On 5/2/2021 10:46 AM, Zack Clobes W0ZC
I've done the string tether in the past. Some of
you at a GPSL roughly 10 years ago at this very airport might
remember my tethers getting looped around the load line, causing
a friction burn. It cut the balloon away letting the parachute
float back to the ground. Not cool.
On Sun, May 2, 2021, 10:21 AM
AE5IB (Kip) <kiptonm@...
We had one like that once. When we let it go it
took off with such a jerk it broke the line under the
parachute. So we lost the balloon and the parachute.
None of the payloads left the ground.
We now do tethered launches, where we have a string on
the balloon until all the payloads are off the ground.
The String goes through a loop and we have two people
holding it. One lets go of the string and it takes off.
Leaving the string with the other person.
And we do not launch in such wind.
This is my third
ever flight in 1989 with surface winds over 20 knots.
You'd think I would learn from this not to launch in
high winds, but I didn't :-)
We almost took out the camera woman as the payload
smashed into the field and bounced over her head.
That payload with its original lithium D-cell SAFT
batteries still operates today when I power it up for
demos after 33 years.
This is how an ideal launch should look like, I
don't get these kind of launches very often:
- Bill WB8ELK
From: Zack Clobes W0ZC <zclobes@...
Sent: Sat, May 1, 2021 8:50 pm
Subject: [GPSL] This is how real men launch their
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