Cargo airship

1. An airship comprising:

a hull configured to contain a gas;

a keel extending longitudinally along the airship and having a bottom surface configured to be a connection point for the cargo;

at least one propulsion assembly coupled to the airship and including a propulsion device,

a payload bay comprising an external cargo area located outside of the hull and external to the keel, the keel forming at least a portion of the external cargo area; and

a cargo handling system comprising at least one hoisting mechanism fixed to the airship and configured to lift cargo from below the bottom surface of the keel into the external cargo area while the airship is hovering, wherein

the keel includes a locking mechanism for securing the cargo externally to the keel at the bottom surface of the keel.

2. The airship of claim 1 , wherein the locking mechanism is a twist lock.

3. The airship of claim 1 , wherein the payload bay further comprises an internal cargo area housed within the keel.

4. The airship of claim 3 , wherein:

the keel comprises an opening separating the internal cargo area from the external cargo area, and

the at least one hoisting mechanism is configured to lift the cargo into the internal cargo area through the opening.

5. The airship of claim 1 , wherein the keel is approximately one third of an overall length of the airship.

6. The airship of claim 1 , further comprising a gondola for transporting at least one crew member, the gondola forming at least a portion of the keel.

7. The airship of claim 6 , wherein the gondola includes a control station configured to allow the at least one crew member to control the cargo handling system.

8. The airship of claim 7 , wherein the gondola includes a window facing toward the external cargo area.

9. The airship of claim 1 , further including a tunnel that runs longitudinally along the payload bay, the at least one hoisting mechanism configured to move longitudinally along the tunnel.

10. The airship of claim 1 , wherein the hoisting mechanism includes at least one two-rail crane.

11. The airship of claim 1 , wherein the airship further includes a landing gear assembly configured to contact the ground and maintain the hull above the ground.

12. The airship of claim 11 , wherein the landing gear assembly includes a plurality of legs, each leg configured to be secured to a mooring pad on the ground.

13. The airship of claim 12 , wherein each leg includes a winch configured to tighten a cable secured between the winch and the mooring pad.