Methods and mechanisms for balloon launching
View Patent ↗A method for balloon launching may include loading a pre-packaged balloon and payload into a shell structure. The pre-packaged balloon may be pulled out of its packaging in a vertical direction, for instance using a gantry crane. The gantry crane may be configured to inflate the balloon from the top of the envelope. The balloon may be inflated while substantially within the shell structure, which may provide protection from wind gusts. A vehicle, such as a heavy forklift, may provide mobility and support for the balloon and shell. Once the balloon is inflated, the vehicle may move the balloon/shell combination at a rate and direction substantially matching the current wind direction/speed. Furthermore, after reaching a zero-velocity condition relative to the wind, the vehicle may assist and/or initiate the opening of the shell. A tether connecting the balloon to the shell structure may be disconnected, allowing the balloon to launch.
1. A method comprising:
providing a balloon positioned substantially within a shell structure, wherein the balloon comprises an envelope in an inflated state;
determining, based on wind data associated with an external environment outside the shell structure, a wind direction and a wind velocity of wind in the external environment;
causing the shell structure to move in a direction and at a velocity resulting in a substantial zero-wind condition, wherein the zero-wind condition comprises the direction being approximately in the wind direction and the velocity being approximately at the wind velocity; and
in response to the substantial zero-wind condition, causing the shell structure to open such that the balloon is exposed to the external environment, and launching the balloon.
2. The method of claim 1 , wherein the envelope in the inflated state comprises the envelope having been substantially filled with a lighter-than-air gas.
3. The method of claim 1 , further comprising receiving wind data associated with the external environment outside the shell structure.
4. The method of claim 1 , wherein causing the shell structure to move comprises causing a vehicle to move the shell structure.
5. The method of claim 4 , wherein the vehicle comprises a fork lift.
6. The method of claim 1 wherein the shell structure comprises an anchor configured to couple the balloon to the shell structure via a tether, and wherein launching the balloon comprises disconnecting the tether.
7. A system comprising:
a shell structure configured to substantially enclose a balloon and to open such that the balloon is exposed to an external environment, wherein the balloon comprises an envelope in an inflated state, wherein the external environment comprises environmental conditions outside the shell structure;
a movement element configured to move the shell structure in a plane substantially parallel to a ground surface; and
a control system configured to:
determine, based on wind data from at least one wind sensor, a wind direction and a wind velocity of wind in the external environment;
cause the movement element to move in a direction and at a velocity resulting in a substantial zero-wind condition, wherein the zero-wind condition comprises the direction being approximately in the wind direction and the velocity being approximately at the wind velocity; and
in response to the substantial zero-wind condition, cause the shell structure to open and the balloon to launch.
8. The system of claim 7 , wherein the shell structure comprises an inner portion and an outer portion, wherein the inner portion comprises a soft material configured to reduce a friction force when in contact with the envelope and wherein the outer portion comprises a rigid material configured to resist a wind force in the external environment.
9. The system of claim 7 , wherein the shell structure comprises a fire-retardant material.
10. The system of claim 7 , wherein the envelope in the inflated state comprises the envelope having been filled with a lighter-than-air gas.
11. The system of claim 7 , wherein the shell structure comprises at least two shell portions, wherein the at least two shell portions are configured to substantially close around the balloon and to substantially open so the balloon may launch.
12. The system of claim 11 , wherein the shell structure comprises an actuation device coupled to the at least two shell portions and wherein the actuation device is configured to open and close the at least two shell portions.
13. The system of claim 12 , wherein the actuation device comprises at least one hydraulic piston.
14. The system of claim 7 , wherein the movement element comprises a forklift.
15. The system of claim 7 , wherein the shell structure further comprises an anchor and wherein the shell structure is further configured to be coupled to the balloon via the anchor and a tether.
16. The system of claim 7 , wherein the balloon further comprises a payload.
17. A non-transitory computer-readable medium having stored therein instructions that, when executed by a computing device, cause the computing device to perform functions comprising:
determining, based on wind data associated with an external environment outside a shell structure enclosing a balloon, a wind direction and a wind velocity of wind in the external environment;
causing the shell structure to move in a direction and at a velocity resulting in a substantial zero-wind condition, wherein the zero-wind condition comprises the direction being approximately in the wind direction and the velocity being approximately at the wind velocity; and
in response to the substantial zero-wind condition, causing the shell structure to open such that the balloon is exposed to the external environment, and launching the balloon.
18. The non-transitory computer readable medium of claim 17 , further comprising receiving wind data associated with the external environment outside the shell structure.
19. The non-transitory computer readable medium of claim 17 , wherein causing the shell structure to move comprises causing a vehicle to move the shell structure.
20. The non-transitory computer readable medium of claim 17 , wherein the shell structure comprises an anchor configured to couple the balloon to the shell structure via a tether, and wherein launching the balloon comprises causing the tether to disconnect from the balloon.