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HUGEWEATHER BALLOON (meteorological sounding balloon) ML-541A/AM.
NOW INCLUDED: Email PDF fileballoon flight storywith full details of the equipment, safe launching, photos and recovery of a balloon flight.
Manufactured by Kaysam Industries in 1982. These balloons are military surplus and are in perfect condition as they are packaged in an air tight, sealed plastic bag. Each balloon weighs about 5 pounds.
This balloon CAN be inflated to 10 to 12 foot in diameter, however they start to look pretty good at about 5foot in diameter and will fly nicely at about 7 foot in diameter.
How much can this balloon lift? With Hydrogen when inflatedto about 7-1/2 feet in diameter and it had almost 7 pounds of lift. The less gas you can use the higher it will fly. I think about 2 pounds of free lift is about right, that's what the guys in the link below used.
Recommended balloon flight links using my balloons, THANKS TO MY CUSTOMERS!
"We flew PURSUIT on Sunrise Soar II on August 7th (2010) and obtained some incredible pictures of sunrise from 80,000 feet above the Texas Hill
"On August 16th (2010) we launched PURSUIT again for Sunrise Soar III. The flight peaked at around 100,000 feet before gliding gently to earth on its
Other flight links:
(information about helium balloons)
(another group's flight)
Really fun Russian flight
Indoor non-launch, funny!
California high school students launch
These balloons vary a little in weight averaging 2277 grams or 5 pounds each. A significant amount of the weight is the tail/apron and the stoppers used to inflate it and attach the payload. THE BALLOON SHIPPED TO YOU MAY WEIGH A LITTLE MORE OR LESS THAN THAT.
These balloons are great fun. Inflate one of these in your boss's office on his birthday, that would get everyone a raise! Great for events, (such as a balloon festival,) and promotions.They can be used as a means for ariel photography. Experiments using a balloon like this will not be forgotten. The math needed to figure the volume of cubic feet in this balloon at various diameters as well as the lifting capacity of Helium and Hydrogen are only a few of the reasons these balloons are so interesting. Please email me your experiences.
Buyer should be aware that these balloons are delicate (not because they are old but because of their nature being made of thin latex rubber) and need to be handled with care! Tree branches will pop them. Sharp stuff on the grass will pop them. Compressor hoses stuck inside them can pop them. You need at least two people to handle the balloon while you're inflating it, one to hold the air/gas supply hose and one to support the balloon while it fills. Regular air compressors will inflate this balloon but that would be my last choice because you need lots of air volume at low pressure, just the opposite of what most air compressors deliver(and you don't want to hold up a 5 pound balloon upfor an hour while it fills, your arms will fall off!) A yard leaf blower adapted down to about a 3/4" PVC pipe (duct tape, and sand the end edges smooth)will work great.
If you are careful you can probably reuse the balloon, however they are designed for one use.
It takes an entire tank of helium to fill one balloon giving it about 7.0 lbs of lift. (with therubber skirt on the bottom carefully removed). Thanks Justin! Note: This customer was looking for lifting capacity using 100% helium. If you are anchoring it and want it to look good, you can use helium to achieve lift off(plus a few pounds oflift) then addregular air, this will put your balloon, fully inflated,in the air for less money. If you're sending it a high as possible, you want it filled with a minimum amount of gas to do the lift-off because it will expand as it goes up and will eventually pop.
You don't have to fill these balloons with helium to have a lot of fun. My neighbor called the cops when he saw the balloon on the light pole (the one pictured.) (PLEASE DON'T HANG A BALLOON FROM ELECTRICAL WIRES.) He thought it was from the Air Force Test Range in Utah's western desert.
price $25 Each: The last time the government purchased these balloons in 1991 they paid $191.00 EACH for a quanity of over 5000 balloons. I don't offer this balloon at any better price in ANY quantity, justin case you're thinking of asking me like many folks have done (however, I can save you some money on the shipping, see below.)
SHIPPING IN THE CONTINENTAL U. S.: Buyer pays $15.00 shipping onANY quantityin the continental United States.AK & HI: 'snew shippingprice rules don't allow for all the scenarios like Alaska and Hawaii, I'll send you an invoice if you purchase more than two balloons otherwise it's $15.00.
INTERNATIONAL SHIPPING: Buyer paysUSPS Priority shipping cost plus $5.00 handling. The U.S. Postal Service has discontinued Surface shipping soUSPS Priority (6 to 10 days) shippingis probably going to cost you more than the cost of the balloon, it it's the least expensive option.
PAYMENT: Paypal or other
Please check out my other interesting items!
Thanks for looking and buying! Dale PTL
Details, notes, emails:
Colorful sunrise photo (last photo) courtesy of Jouni Juden, Finland
Filling nozzles and tail: The balloons fill from the top... since the skirt is on the bottom. A stopper ball with a heavy string attached to it lodges in the neck of the balloon. Another throat/stopper is at the bottom of the skirt except it's not used for filling the skirt as the skirt has a couple holes in it to self adjust to size and pressure. The stopper string coming out of the skirt can be used to attach a payload or tether the balloon. If you remove the tail, you can fly the balloon upside down and use the fill stopper string to attach your payload.
Negativecomments emailed to me from a buyer: "This balloon is no where near a 2200 gram balloon! It is misleading to describe it as such it's more like an 800 gram balloon in reality. The excess weight of the apron and the heavy stoppers greatly reduce this balloon lifting capacity. Cut off the stoppers and the apron including half it's attachment area and re-weigh. That's going to be a more realistic representation of this balloons capacity!" Another buyer's comments about this: "In response to the 800gram balloon complaint... I measured the balloon.
Description Mass (g)
Original Mass (aprox) 2200
Final Mass with Bag 1551
Bottom Nozzle with Bag 123
Latex Skirt 693
1428 Aprox. Balloon Mass without fill nozzle and stopper. (the assumption is that both bottom and top stoppers are about equal in mass")
Recent email from Marco in Switzerland:I bought the big army surplus weather balloon. I performed a HAB-Experiment flight with over the swiss alps this January the 16th. I had the skirt of the balloon removed andI had about 2.5Kg of free lift. That was a bit to much, because I filled 4.9 m2 of Helium. Anyway the balloon reached 21'500m (something around 65'000 feet) and bring me back great videos and images. No desert and great planes here: I had to climb the alps to get the capsule back! Marco Glattfelder, Switzerland