sheffield
sheffield


Author Comment Last activity Moderation
lionfish "cfastie, don't worry, we've got this covered. We just need to apply to the Civil Aviation Authority, as you've identified. I'm just ensuring I've g..." | Read more » about 8 years ago
cfastie "This suggests that UK balloons, like UK kites, must be kept under 60 m agl without special permission. There are similar restrictions in the US but..." | Read more » about 8 years ago
cfastie "Another rather important topic is the strict altitude limitations for kites and balloons in the UK. Kites are not allowed to be more than 60m above..." | Read more » about 8 years ago
cfastie "I assume the kite line sold at the KAPshop is good braided polyester. Dacron is DuPont's brand of polyester, so it does not have to be Dacron. The ..." | Read more » about 8 years ago
lionfish "Good work on the balloon maths - hopefully will come in useful for other people. Also your research into which lines and winders - quite a common q..." | Read more » about 8 years ago
cfastie "First, the maths. 8 foot diameter balloon weighs 600 grams, so when inflated each cm² weighs 0.00321 grams 5.5 foot diameter balloon weighs 350 gra..." | Read more » about 8 years ago
lionfish "Thanks cfastie and stevie. @stevie: I feel I've not put enough detail in yet to explain how it works: I'll make a new note to explain it properly w..." | Read more » about 8 years ago
stevie "Awesome post! I'm sharing it with the Public Lab Grassroots Mapping google group incase other people want to ping in here. Great project! " | Read more » about 8 years ago
cfastie "This all looks like a lot of fun. I'm sure the bumblebees are very excited as well. The balloon looks great. It looks like a larger version of the..." | Read more » about 8 years ago