Additional systems and methods for long endurance airship operations using a free-flying tethered airship system
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United States of America Patent
Stats
-
Feb 23, 2016
Grant Date -
Apr 10, 2014
app pub date -
Aug 19, 2013
filing date -
Jun 13, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In one example, a free-flying tethered airship system includes an upper airship adapted to tailor its lift and drag, a lower airship adapted to tailor its lift and drag, and a tether connecting the upper airship to the lower airship such that the upper airship is at least one kilometer above the lower airship. The upper airship is configured to be equiliberally buoyant, while carrying the tether, in a first altitude range. The lower airship is configured to be equiliberally buoyant in a second altitude range, the first altitude range being higher than the second altitude range. A method for stationkeeping of a free-flying tethered airship system is also provided.
First Claim
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International Classification(s)
- 2013 Application Filing Year
- B64B Class
- 54 Applications Filed
- 52 Patents Issued To-Date
- 96.30 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- B64B Class
- 8.33 % this patent is cited more than
- 9 Age
Maintenance Fees
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|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Aug 23, 2027 |
