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Hi everyone!
#1
Hello.
My name is Piotr but my friends always call me Władymir so i set my nick as Wladymir.
I'm new to this forum and writing from Warsaw/Poland.
I'm going to build my first RC FPV blimp and hope find some useful tips here  Tongue
I'm studing in university of technology so i have  knowledge of electronics but don't have any knowledge about RC FPV models and hope get it here!
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#2
Good morning Wladymir and welcome to the forum. Lots of very knowledgeable people (not necessarily me) here and all are willing to help if they can. Do you literally mean a lighter then air vehicle (blimp)? If so that could be a really interesting project and I am sure it will have some challenges, but if you're in need of advice on FPV and associated systems you're in the right place. Welcome!
"Damn the torpedoes!!!  Full speed ahead!!!"
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#3
That's what i meant but a little smaller  Tongue


 
[-] The following 4 users Like Wladymir's post:
  • Robtherotor, BigglesFPV, sirdude, sloscotty
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#4
That's going to be the first blimp ever built on this forum hehe welcome mate
Don't be a LOS'er, be an FPV'er :)  My Gear - Facebook - Instagram - Twitter
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#5
Welcome to the forum Wladymir and good luck with your blimp.
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#6
Hello neighbor, Konrad from Legionowo here! Maybe we will race around your blimp one day? Big Grin
Find me on Youtube and Instagram. I currently fly: DRC Aura, NOX5R, Minimalist 112 and drive a scrap RC car
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#7
Very cool, Wladymir! And welcome. Have you determined a volume/weight ratio you will shoot for for your blimp? I'm sure people here can help with keeping weight of flight/cam components down. Anyway, good luck with your project - can't wait to see your progress!
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#8
I didn't  determine the  volume and sizes, but i determined the weight of electronics, camera and motors with blades.
The  weight of this all components will be equal 300-450g.
I just need your  help to choose  the appropriate size and shape of ballon and estimate the dimensions.

@KonradS: We can if i finish  Big Grin
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#9
1 cu ft of helium can "lift" (support at equilibrium-which is probably what you will want) about 28 grams of payload. Note that that would include the weight of the envelope holding the helium. Suppose your equipment is 450 grams and say your envelope is super light-weight mylar (lets allow 50 grams total). So 500/28 = 17.86, or about 18 cu ft of helium. Take a cylinder 2 ft in diameter. 3.14 * 1 gives area (or 3.14 sq ft) . So, 18/3.14 = 5.73. So in this scenario, your "blimp" would need to be about 6 ft long (by 2 ft in diameter). I am guessing it will be hard to find a balloon that size that weighs only 50 grams.

The lighter your equipment, the smaller balloon you can use. Anyway, there is a weather balloon calculator here: http://www.highaltitudescience.com/pages...calculator . (this is where I got the 28 gram figure)
[-] The following 2 users Like sloscotty's post:
  • BigglesFPV, sirdude
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