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2 New White Huge 200 Gram Weather Balloon 8 feet Meteorological
2 New White Huge 200 Gram Weather Balloon 8 feet Meteorological
2 New White Huge 200 Gram Weather Balloon 8 feet Meteorological
2 New White Huge 200 Gram Weather Balloon 8 feet Meteorological
2 New White Huge 200 Gram Weather Balloon 8 feet Meteorological
2 New White Huge 200 Gram Weather Balloon 8 feet Meteorological
2 New White Huge 200 Gram Weather Balloon 8 feet Meteorological
2 New White Huge 200 Gram Weather Balloon 8 feet Meteorological
2 New White Huge 200 Gram Weather Balloon 8 feet Meteorological
2 New White Huge 200 Gram Weather Balloon 8 feet Meteorological

2 New White Huge 200 Gram Weather Balloon 8 feet Meteorological

$ 11.06

Availability: 100 in stock
  • Brand: Unbranded
  • All returns accepted: Returns Accepted
  • Item must be returned within: 30 Days
  • Modified Item: No
  • Refund will be given as: Money Back
  • Non-Domestic Product: No
  • Restocking Fee: No
  • Return shipping will be paid by: Buyer
  • Custom Bundle: No
  • Condition: New

    Description

    200 Gram White Weather Balloon
    This is two new and unopened 200 gram weather balloons.  They are double sealed in an airtight package.  That is it's sealed within a plastic bag
    and then that bag is sealed inside another bag.  I assume that's to prevent it from being aged by the air.  They were manufactured in July of
    2013.  It expired in July of 2015.  Though they have officially expired there is still plenty of life in these balloons.  They are in perfect
    condition.
    They are natural latex color.  When it's inflated it's a pearly white.  Uninflated it's roughly oval shaped and measures about 20 inches across
    and 30 inches tall.  They were manufactured by Kaymont Consolidated Industries.
    These balloons, as all weather balloons, are delicate. It has nothing to do with the age and everything to do with the material. Like all
    balloons the more it's filled the more delicate it becomes. If it's filled to 4 - 4 1/2 feet it has taken shape and is rather flexible
    and forgiving. It can be filled to 6-7 feet but it is much more sensitive and likely to pop. Note if it hits a tree it will almost surely
    pop. Things like grass and debris on the ground can destroy it as well. I've inflated several weather balloons of various sizes and
    it's always best to have at least two people. One to hold the balloon and one to manage the filling process. Also, if you're interested
    in high altitude experimentation please understand that as the balloon rises it will expand. You only want to fill it enough to get a
    good lift on your payload. These balloons were designed for single use, but if you're very careful I suspect it could be reused.
    Here are the details based upon the NSN of 6660-01-558-3628.  Note these are the manufacturing specifications.  I have not validated
    these parameters:
    Criteria
    Characteristic
    NAME
    BALLOON, METEOROLOGICAL
    COLOR
    NATURAL LATEX
    FLACCID BODY LENGTH
    86 CM/33.85 INCHES
    BARELY INFLATED DIAMETER
    55 CM/21.65 INCHES
    NECK LENGTH
    12 CM/4.72 INCHES
    NECK DIAMETER
    3 CM/1.18 INCHES
    WEIGHT
    200.0 GRAMS
    PAYLOAD
    250 GRAMS/8.818 OUNCES
    NOZZLE LIFT
    760 GRAMS/26.8 OUNCES
    RECOMMENDED FREE LIFT
    510 GRAMS/18 OUNCES
    GROSS LIFT
    960 GRAMS/33.86 OUNCES
    DIAMETER AT RELEASE
    117 CM/46 INCHES
    VOLUME AT RELEASE
    0.83 CU M/29.31 CU FT
    RATE OF ASCENT
    320 M PER MIN/1049 FT PER MIN
    MINIMUM BURSTING DIAMETER
    300 CM/10 FEET
    MINIMUM BURSTING ALTITUDE
    21.2 KM/70,000 FEET
    BURSTING PRESSURE
    45.3 HPA
    MATERIAL
    MULTILAYERED LATEX FILM
    Free USPS shipping within the US.  Residents of Georgia must pay 6% sales tax.
    International shipping is available.