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Dog Barf"Dog barf" is the name rocketeers have given to the blow-in attic insulation material often used in place of recovery wadding. A layer of "dog barf" is used in rockets to protect the parachute and other recovery system components from the direct heat of the motor's ejection charge.Large packages of Dog Barf are available for under $10 each in home improvement stores. One package provides enough dog barf for hundreds of rocket flights.
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