Aeronautics and astronautics – Aircraft structure – Material discharging and diffusing
Patent
1982-06-18
1984-10-02
Barefoot, Galen L.
Aeronautics and astronautics
Aircraft structure
Material discharging and diffusing
221 33, 116209, B64D 100
Patent
active
044743491
ABSTRACT:
A drop marker system that includes a series of interconnected drop markers that are placed into a dispensing mechanism for selective ejection to mark passes made by an aircraft is disclosed. Each drop marker includes a streamer and a substantially planar base member with one end of the streamer being securely fastened to the base member. The other end of each streamer is separably fastened to the base member of the next drop marker of the series, with the streamer being folded back and forth upon itself with accordian-like folds to lay flat between the base members of the two adjacent drop markers. When a drop marker is ejected from the dispenser, the drop marker is subjected to high velocity air flowing over the dispenser, resulting in the released base member pulling on the attached streamer. The streamer unfolds due to the pulling force exerted by the released base member and because the other end of the streamer is attached to the base member of the next drop marker held in the dispenser. When the streamer is unfolded, the separably fastened end of the streamer breaks loose from the base member of the next drop marker, and the ejected drop marker falls to the ground.
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