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Thread: how much does it cost to fill a weather balloon?

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  1. #1
    Join Date
    Oct 2003
    Location
    San Antonio, Texas
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    218

    Default how much does it cost to fill a weather balloon?

    how much does the helium cost to fill one of those 6-8' weather balloons?
    -John
    KD5ZEW

  2. #2

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    Quote Originally Posted by KD5ZEW View Post
    how much does the helium cost to fill one of those 6-8' weather balloons?
    Can't be more than $75, which is about the price of a 50 lbs cylinder of helium (Short of the deposit on the tank).
    Corey, KC2UGV

  3. #3

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    Check your local helium prices (prices tripled in some parts of the USA over past 2 years) -- lowest prices in USA is in your part of Texas where it is extracted and stored!

    w9gb

  4. #4
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    Jan 2004
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    Beautiful Downtown Colorado. (Montrose, SW corner)
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    I bet the Wx Service gets it holessell.

    TOM K8ERV Montrose Colo

  5. #5
    Join Date
    Mar 2003
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    3763 Lyle Avenue, North Pole, AK 99705
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    Default

    Quote Originally Posted by W9GB View Post
    Check your local helium prices (prices tripled in some parts of the USA over past 2 years) -- lowest prices in USA is in your part of Texas where it is extracted and stored!

    w9gb
    Yeah, I'd use hydrogen. Much cheaper, especially if you "roll your own."
    "The more you know, the less you don't know."

  6. #6
    Join Date
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    I can't believe you would even ask the cost! It is well substantiated that most hams are full of hot air so it shouldn't be hard to get it done for free and not need helium!!
    "Oh what a tangled web we weave when first we practice to receive."
    -Otto Watt Sept. 5 1925

  7. #7

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    4(3.141592)r^3/3 = volume. That is Four Times Pi time Radius Cubed, all divided by three.

    8' diameter ballon holds 268 cubic feet, plus just a skosh since the balloon compresses it a few torr.

  8. #8
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    Mar 2007
    Location
    Christchurch, New Zealand
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    I've seen a suggestion that the world will run out of helium in a few years because NASA are using so much.

    Hydrogen is great, but be very careful. You must earth everything ... hydogen is very inflammable at any mix with air. When I lowered the balloon, I just threw a pair of scissors at the balloon. A few shreds of rubber fell to the ground. The balloon is a capacitor and the atmospheric voltage gradient is about 100V/m, so as the balloon goes high it is charged to a high voltage.

  9. #9
    Join Date
    Oct 2003
    Location
    San Antonio, Texas
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    218

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    Quote Originally Posted by ZL3GSL View Post
    I've seen a suggestion that the world will run out of helium in a few years because NASA are using so much.

    Hydrogen is great, but be very careful. You must earth everything ... hydogen is very inflammable at any mix with air. When I lowered the balloon, I just threw a pair of scissors at the balloon. A few shreds of rubber fell to the ground. The balloon is a capacitor and the atmospheric voltage gradient is about 100V/m, so as the balloon goes high it is charged to a high voltage.
    Throwing scissors in the air at a fragile sphere pressurized with extremely flammable gas that may be carring a Very high voltage charge.........

    here's your sign =)
    I love ham radio
    -John
    KD5ZEW

  10. #10
    Join Date
    Jan 2004
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    Quote Originally Posted by KG6WOU View Post
    4(3.141592)r^3/3 = volume. That is Four Times Pi time Radius Cubed, all divided by three.

    8' diameter ballon holds 268 cubic feet, plus just a skosh since the balloon compresses it a few torr.
    3.1415926 Please get it right---

    TOM K8ERV Montrose Colo

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