I am developing an unpowered paraglider system that will return the payload from a weather balloon to one of a few clear/open landing areas. The idea is that depending on where the balloon bursts…Continue
"NASA launches rockets, those cost significant amounts of money and the legal framework keeps a small army of legal experts busy.
DIY rocket enthusiasts also launch rockets, the simplest one can be as cheap as a plastic bottle with water and…"
I am always on topic
read below and say that you are sorry
If you try to say, that Colin Gibson is not on topic, so I have nothing to say.
If you have previous knowledge and experience in launching weather balloons, building weather…"
"The OP asked about getting a parafoil to return from a balloon, presumably bursting at high altitude. There was no mention of payload price. The meteo community are using tried and tested methods because their equipment is expensive…"
"you said: " I do not understand where the assumption for super expensive payload comes from.
You are free to contact NASA, NOAA, any UN agency for details on weather balloon projects and on cost estimates
If your project is small and…"
" spiral dive is a well tried and tested manoeuvre in the sport
weather balloon has nothing to do with any sport
weather baloon is not human controlled apparatus
But you are free to test and show us results of your tests,…"
"@ d j: Sorry, I do not understand where the assumption for super expensive payload comes from. This site is DIY drones, we discuss anything that is remotely capable of autonomous movement.
The OP asked about getting a parafoil to return from a…"
"Darius you are so wrong.....again. Deaths in paragliding have nothing to do with the discussion at hand and do not support your point in any reasonable manner. The spiral dive is a well tried and tested manoeuvre in the sport and is taught to all…"
"I meant this reply have been deleted
Rescue parachute is pretested, verified and certified technique to save playload in case of balloon's burst.
If you launch $100T+ weather balloons project you have to get insured against any risk (…"
What is a twist dive and what does it have to do with anything? I am talking about a spiral dive, see here:
one of the most basic rapid descent tricks any paraglider pilots learns.
As to how much…"
"Increase. Higher weight -> higher speed.
Spiral dive is never uncontrolled or it wouldn't be used as a standard descent manoeuvre in paragliding so your risk of failure is damn small. What you don't have control over is direction while…"
", another way to increase your speed is to increase your wing loading,
increase or decrease the speed ?
To solve the M$M worth problem how to save a payload in case weather balloon bursts
I work with operation research,…"
"If you want to burn altitude using a parafoil, use a spiral dive (look for paraglider spiral dive on youtube). You will drift with the wind but will get to lower altitudes where wind speeds will be less extreme. Depending on the conditions and your…"
"Since weather balloons fly against jet streams it's a good chance to have aerodynamic cell structure of your parafoil inflated by the wind.
You can read wind speed from GPS tracker coming with every weather balloon but need to precalculate safe…"