Steerable Container Delivery System

• US 20130048787A1
• Filed: 08/31/2011
• Published: 02/28/2013
• Est. Priority Date: 08/31/2011
• Status: Active Grant

• Current Assignee: The Boeing Co.
• Original Assignee: The Boeing Co.
• Inventors: Riley, David Ray, Nielsen, Zachary Anton
• Granted Patent: US 9,061,764 B2
• Time in Patent Office: Days
• US Class Current: 244/137.1
• CPC Class Codes: B64D 1/08 the articles being load-carrying devices
• CPC Class Codes: B64D 1/14 Absorbing landing shocks
• CPC Class Codes: B64D 17/34 adapted to control direction or rate of descent

Abstract

A steerable container delivery system (“CDS”) includes a pallet configured with inflatable fins for steering a CDS cargo bundle during free fall when airdropped. The inflatable fins are inflated shortly after deployment using compressed air carried by a tank in the pallet. A flight management computer (“FMS”) continuously monitors the location of the CDS bundle using GPS technology and determines a vector to a drop location based on stored GPS measurements. The FMC continuously monitors and positions the CDS bundle over the drop location, and is able to independently rotate the fins to control the position of the CDS bundle, either by rotating the CDS bundle or laterally moving it. At the appropriate altitude, the FMC causes the main parachute to open to slow the descent of the CDS bundle for impact.

Claims

1. A steerable container delivery system (“

CDS”

) comprising;

a pallet configured to be airdropped from a cargo aircraft,

a first fin and a second fin extending from opposite sides of the pallet and configured to alter a lateral position of the pallet during descent of the CDS; and

a flight management computer (“

FMC”

) configured to control a rotation of the first fin and the second fin, wherein the FMC computer comprises a GPS receiver configured to determine the lateral position of the pallet and control rotation of the first fin and the second fin to position the CDS over a drop location.

2. The steerable CDS of claim 1, wherein the pallet comprises a payload platform sub-layer and wherein the first fin and the second fin are configured to rotate about an axis parallel to the pallet at the payload platform sub-layer and perpendicular to the direction of descent.

3. The steerable CDS of claim 2, wherein the first fin and the second fin are inflatable fins.

4. The steerable CDS of claim 3, further comprising a tank containing compressed gas configured to release the compressed gas to inflate the first fin and inflate the second fin.

5. The steerable CDS of claim 3, wherein the first inflatable fin and the second inflatable fin are configured to be counter-rotated during descent to rotate the pallet during descent.

6. The steerable CDS of claim 3, wherein each inflatable fin comprises a plurality of inflatable cylindrical shaped structures.

7. The steerable CDS of claim 1, wherein the pallet comprises payload platform sub-layer housing the FMC.

8. The steerable CDS of claim 7, wherein the FMC comprises a compass, and the compass is used to compute the vector to a second GPS location.

9. The steerable CDS of claim 1, wherein the FMC computer is configured to:

ascertain a first GPS location using the GPS receiver and compute a vector to a second GPS location, wherein the second GPS location is stored in a memory and is the drop location; and

position the CDS over the second GPS location.

10. A steerable container delivery system (“

CDS”

) comprising;

a pallet configured to be airdropped from a cargo aircraft,

a first fin and a second fin positioned at opposite sides of the pallet, the first fin and the second fin configured to be independently rotated on an axis positioned horizontal to the pallet;

a first actuator and a second actuator configured to rotate the first fin and second fin respectively; and

a flight management computer (“

FMC”

) configured to control the first actuator and the second actuator so as to steer the CDS to a drop location, wherein the FMC comprises

a memory storing GPS coordinates of the drop location,

a wireless interface for receiving the GPS coordinates of the drop location,

a GPS receiver configured to receive GPS signals and provide a longitude and latitude of the CDS during descent, and

a compass providing a heading of the CDS during descent.

11. The steerable CDS of claim 10, wherein the first fin and the second fin are inflatable, and further comprising:

a pressurized gas tank configured to release pressurized gas to inflate the first fin and inflate the second fin.

12. The steerable CDS of claim 11, wherein the first fin and the second fin each are configured so that a respective maximum pressure generated by the first fin and second fin is above a center of gravity of the steerable CDS.

13. The steerable CDS of claim 12, wherein the first fin and the second fin each comprise at least one inflatable cylinder shaped structure comprising ripstop nylon.

14. The steerable CDS of claim 12 wherein the pallet comprises a payload platform sub-layer and at least one crushable material sub-layer, and the payload platform sub-layer houses the FMC and a battery configured to power the FMC.

15. The steerable CDS of claim 10, wherein the first fin and second fin are configured to rotate in opposite directions about the axis so as to rotate the CDS during descent and to rotate in the same by rotation about the axis so as to laterally move the CDS during descent.

16. The steerable CDS of claim 15, wherein the FMC is configured to control the first actuator and the second actuator so as to steer the CDS to the drop location by both rotating and laterally moving the CDS to the drop location.

17. A method for controlling the descent of an airdropped container delivery system (“

CDS”

), comprising;

deploying a CDS comprising a pallet and cargo by ejecting the CDS out of a cargo aircraft;

deploying a first fin and a second fin extending from a first side and a second side of the CDS, wherein each fin is configured to rotate independently about an axis parallel to the pallet; and

controlling a first rotation of the first fin and a second rotation of the second fin to steer the CDS to a drop location.

18. The method of claim 17, further comprising:

actuating a regulator to release pressurized gas inflating the first fin and the second fin during descent.

19. The method of claim 17, further comprising:

ascertaining a first GPS longitude and latitude position of the CDS during descent by a flight management computer controlling the first rotation of the first fin and the second rotation of the second fin; and

controlling the first rotation of the first fin and the second rotation of the second fin so as to position the CDS closer to a second longitude and a second latitude associated with the drop location.

20. The method of claim 19, wherein controlling the first rotation of the first fin and the second rotation of the second fin to position the CDS closer to the second longitude and the second latitude of the drop location comprises rotating the first fin and second fin in opposite directions to rotate the CDS and rotating the first fin and the second in the same direction to laterally move the CDS.