Aircraft with removable pod and wing for transporting cargo on pallets
12030631 ยท 2024-07-09
Assignee
Inventors
Cpc classification
B64C39/04
PERFORMING OPERATIONS; TRANSPORTING
B64U50/19
PERFORMING OPERATIONS; TRANSPORTING
B64C1/1415
PERFORMING OPERATIONS; TRANSPORTING
B64U2101/60
PERFORMING OPERATIONS; TRANSPORTING
B64C25/36
PERFORMING OPERATIONS; TRANSPORTING
B64U10/20
PERFORMING OPERATIONS; TRANSPORTING
B64C39/024
PERFORMING OPERATIONS; TRANSPORTING
B64C37/02
PERFORMING OPERATIONS; TRANSPORTING
B64D9/003
PERFORMING OPERATIONS; TRANSPORTING
B64F1/322
PERFORMING OPERATIONS; TRANSPORTING
B64D27/40
PERFORMING OPERATIONS; TRANSPORTING
International classification
B60L50/60
PERFORMING OPERATIONS; TRANSPORTING
B64C1/14
PERFORMING OPERATIONS; TRANSPORTING
B64C25/36
PERFORMING OPERATIONS; TRANSPORTING
B64C29/00
PERFORMING OPERATIONS; TRANSPORTING
B64C37/02
PERFORMING OPERATIONS; TRANSPORTING
B64D27/40
PERFORMING OPERATIONS; TRANSPORTING
B64D9/00
PERFORMING OPERATIONS; TRANSPORTING
Abstract
An unmanned aerial vehicle (UAV) has a wing assembly that is coupled to a cargo carrying pod. The pod has a pallet storage volume and an aerodynamic outer surface. The wing assembly has wings that are coupled to rotor booms that include motors and rotors. A tail assembly is coupled to tail booms that extend back from the wings. Rudders are coupled to the rear portions of the tail booms and an elevator is coupled to top portions of the rudders. The elevator is at least 84 inches high and the rudders are at least 48 apart so that a forklift can drive under the elevator and between the rudders to a rear door of the pod to place cargo on a pallet into the storage area of the pod.
Claims
1. A wing assembly for an unmanned aerial vehicle (UAV), comprising: a pair of wings extending outwardly from a pod connection mechanism; a pod housing having an upper portion that is releasably coupled to the pod connection mechanism; two or more rotor booms that are coupled across cord portions of the pair of wings; electric motors, wherein each of the electric motors is coupled to a front portion or a rear portion of the two or more rotor booms; tail booms extending horizontally backwards from rear portions of the pair of wings; a tail portion coupled to rear portions of the tail booms, the tail portion having two rudders and an elevator assembly coupled to top portions of the two rudders; two skids for supporting the wing assembly when the two skids are in contact with a ground surface, the two skids are permanently coupled to and extend downward from lower portions of the pair of wings; and landing gear mounted to a lower portion of the pod housing, the landing gear having a plurality of wheels for rolling the pod module on the ground, wherein landing gear is adjustable in height to raise and lower the pod housing relative to the pair of wings.
2. The wing assembly of claim 1 further comprising: a flight control computer; and a radio frequency transceiver.
3. The wing assembly of claim 1 further comprising: batteries mounted in the two or more rotor booms for powering the electric motors.
4. The wing assembly of claim 1 wherein the top portions of the two rudders are angled inward from the bottom portions of the two rudders.
5. The wing assembly of claim 1 wherein the two skids each include elongated horizontal structures that are in contact with the ground and a center of gravity of the wing assembly is between front ends and rear ends of the two skids.
6. The wing assembly of claim 1 further comprising: an internal cargo storage volume in the pod housing having a length that is greater than 48 inches, a width that is greater than 40 inches, and a height that is greater than 84 inches; a plurality of battery modules containing rechargeable batteries placed in battery portions of the pod housing wherein the battery portions are in front of and behind the internal cargo storage volume; a battery charging port on an external surface of the pod housing, the battery charging port is electrically coupled to the plurality of battery modules; landing gear mounted to a lower portion of the pod, the landing gear having a plurality of wheels for rolling the pod module on the ground; and an electrical connection mechanism that electrically connects the plurality of battery modules to electrical components in the pair of wings.
7. The wing assembly of claim 6 further comprising: a first door that is opened to load cargo into the internal cargo storage volume, wherein the first door is coupled to a rear door opening of the pod housing with a first hinge and the door opening is at least 40 inches wide and at least 72 inches high.
8. The wing assembly of claim 6 further comprising: a passenger seat in the internal cargo storage volume.
9. The wing assembly of claim 6 wherein the connection mechanism allows the pod module to be removed and separated from the wing assembly.
10. The wing assembly of claim 6 wherein the connection mechanism mechanically links both the pod module and the wing assembly and the connection mechanism transfers electric energy from the pod module to the wing assembly.
11. The wing assembly of claim 6 wherein the pod module has an aerodynamic outer surface that has a rounded front surface and a tapered rear portion.
12. The wing assembly of claim 6 further comprising: additional battery modules in the pod for providing electric energy to motors that drive rotors to allow the UAV to fly longer distances.
13. The wing assembly of claim 6 wherein the pod module is made from: composite, plastic, or other lightweight structural materials.
14. The wing assembly of claim 1 wherein the two skids are not adjustable in height.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
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DETAILED DESCRIPTION
(14) The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term and/or includes any and all combinations of one or more of the associated listed items. As used herein, the singular forms a, an, and the are intended to include the plural form as well as the singular forms, unless the context clearly indicates otherwise. It will be further understood that the terms comprises and/or comprising, when used in this specification, specify the presence of stated features, steps, operation, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof.
(15) Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meanings as commonly understood by one having skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
(16) In describing the invention, it will be understood that a number of techniques and steps are disclosed. Each of these has individual benefits and each can also be used in conjunction with one or more, or in some cases all, of the other disclosed techniques. Accordingly, for the sake of clarity, this description will refrain from repeating every possible combination of the individual steps in an unnecessary fashion. Nevertheless, the specification and claims should be read with the understanding that such combinations are entirely within the scope of the invention and the claims. The present disclosure is to be considered as an exemplification of the invention and is not intended to limit the invention to the specific embodiments illustrated by the figures or description below.
(17) With reference to
(18) With reference to
(19) With reference to
(20) In some contemplated embodiments, with reference to
(21) The tail portion 115 of the UAV 100 is located on a center axis that extends back from the wings assembly 101. In some embodiments, the tail 115 is an inverted V-tail with two rudders 113 with no more than two elevator assemblies 111 coupled to the top portions of the rudders 113 that are at least 48 apart. The elevator(s) 111 can have a minimum height of 76 above ground surface when the two skids 117 are in on the ground surface. The two skids 117 can be coupled to, and can extend downward from the lower portion of the wing assembly 101 with the center gravity of the wing assembly 101 that is between the front end and rear end of the two skids 117. The skids 117 support the wing assembly 101 once they are in contact with a ground surface. In other embodiments, the skids 117 may be substituted by landing gear 125 wheels or any other suitable structures.
(22) In some embodiments, the wing assembly 101 that can be removed or secured to the pod 123 using a releasable connection mechanism. With reference to
(23) With reference to
(24) With reference to
(25) In an embodiment, the landing gear 125 can be controlled to raise and lower the pod 123 relative to the wing assembly 101 by up to ?5 inches. The landing gear 125 can be adjusted so that the connection mechanism 161 aligned with the corresponding holes or grooves in the skids 117 so there is minimal sliding friction between the connection mechanism 161 and the corresponding holes or grooves in the skids 117. In the aligned position, the connection mechanism 161 is retracted into the pod 123 and the pod 123 can be moved away from the wing assembly 101. Similarly, when the pod 123 is attached to the wing assembly 101, the pod 123 can be moved under the wing assembly 101 between the skids 117. The landing gear 125 can be adjusted so that the connection mechanism 161 aligned with the corresponding holes or grooves in the skids 117 and the connection mechanism 161 extended into the corresponding holes or grooves in the skids 117 to mechanically and electrically connect the pod 123 to the wing assembly 101. In the assembled configuration, the UAV 100 can fly to the next delivery destination.
(26) With reference to
(27) With reference to
(28) With reference to
(29) The maximum safe flying payload weight of the pod 123 (Wmax) can be a predetermined weight that must be greater than the combined weight of the pod batteries 129 (Wb) and the weight of the cargo 133 (Wc). Wmax>Wb+Wc. Thus, if the pod 123 includes a higher number of pod batteries 129, the weight of the pod batteries 129 (Wb) will increase and the permissible weight of the cargo 133 (Wc) will be reduced. Conversely, if fewer pod batteries 129 are needed, the weight of the pod batteries 129 (Wb) is reduced, and the permissible weight of the cargo 133 (Wc) can be increased while still being under the (Wmax) value. The quantity of pod batteries 129 needed is variable depending upon the flight range of the cargo 133 delivery. More batteries 129 may be required for longer flights. However, this can result in a higher (Wb) which can lower the maximum allowable cargo 133 weight (Wc). Conversely, fewer batteries 129 may be sufficient for shorter flights which results in a lower (Wb), allowing the maximum allowable cargo 133 weight (Wc) to be higher.
(30) In a cargo configuration, the pod 123 can be loaded with cargo 133 that is on a pallet 131 using a forklift 145 and/or a pallet jack, or similar pallet loading device. The cargo 133 loading or unloading can occur both when the pod 123 is separated from the wing carrier 101 and/or when the pod 123 is connected to the wing carrier 101. The pod 123 can have landing gear 125 with wheels that allow the pod 123 to be rolled, either by being pushed and/or pulled by an aircraft tug. The pod 123 has a connecting mechanism 161 that connects the pod 123 both mechanically and electrically to the wing carrier 101.
(31) The removable pod 123 can be a modified teardrop shape with a rounded frontal portion and a tapered rear portion. In the illustrated embodiment, the front of the pod 123 can have a rounded shape where the top front surface of the pod 123 can curve downward from the top wing connection portion and the front bottom surface can curve upward from the front landing gear 125 portion. The rear portion of the pod 123 can have side surfaces that taper inward towards a center line from the sides of the pod 123. The rear bottom portion of the pod 123 can curve upward from the front landing gear 125 portion.
(32) The floor of the internal cargo storage volume in the pod 123 can be a horizontal planar surface that can be at least 40 inches in width by at least 48 inches in length by at least 72 inches in height. Rear door(s) 127 at the rear portion of the pod can open with an edge of the door opening adjacent to the storage volume. The rear door(s) 127 can be attached to hinges coupled to the left and right side of the pod 123 that allow the rear door(s) 127 to open about a vertical axis so that the door(s) 127 swing horizontally outward. As illustrated in
(33) In an alternative embodiment, the rear door(s) 127 can be attached to a hinge that rotates about a horizontal axis and the rear door can rotating upward behind the wing 101 and between the tail booms 109. In this embodiment, the lowest portion of the door 127 in the raised position is greater than 72 inches so that the forklift can move under the door 127 to place cargo into the pod 123.
(34) In some embodiments, the pod 123 can have a door 126 at the front of the pod 123 and/or a door 127 at the rear of the pod 123. The front door 126 and/or the rear door 127 can be opened to load either cargo 133 or passengers. In the rear door 127 loading configuration, the doors 127 can open in a double door configuration. In the front load configuration, the front door 126 can either be a double door or single door.
(35) In the cargo configuration of the pod 123, a pallet 131, such as a 40 inch?48 inch pallet and/or EUR-pallet that can be about 1 meter?1.2 meters, can be loaded into the internal cargo space of the pod 123. In the passenger configuration, 1 or more persons can sit in the internal volume passenger compartment of the pod 123. The pod 123 can be extended horizontally to add additional internal volume for increasing cargo 133 or passenger carrying capacity. The floor of the internal volume of the cargo storage portion of the pod 123 can be horizontal or planar. In some embodiments, the pod 123 can have a maximum height of 76 and can safely load cargo 133 on a pallet 131 that is up to 72 in height.
(36) The pod 123 can also contain modular battery systems 129 in battery portions of the pod 123 that can be removed, upgraded, exchanged, and/or added without impacting the functionality of the pod 123. The batteries 129 can be charged by existing electrical charging infrastructure, such as level 2 alternating current (AC) charging infrastructure via an SAE J1772 receptacle, and an onboard AC to direct current (DC) converter and battery chargers. In some embodiments, the batteries 129 can also be charged by level 3 DC charging infrastructure by an SAE Combo combined charging system (CCS) receptacle on an external surface of the pod 123. In some embodiments, the modular battery systems 129 can be distributed with some batteries 129 at the front portion of the pod 123 and some modular batteries 129 at the rear portion of the pod 123 so that the center of balance of the pod 123 is centrally located.
(37) The pod 123 can rest on a landing gear 125 that can include wheels 125 that allow the pod 123 to be rolled by being pushed and/or pulled away from the wing assembly 101. For example, the front wheel can be connected to a standard aircraft tug that can be used to move the pod 123 away from the wing assembly 101 to a cargo loading and unloading area. For example, a delivered pod 123 having depleted batteries 129 can be moved to an unloading area where the cargo 133 is unloaded and delivered to cargo recipients. The delivered pod 123 can then be coupled to a battery charging station to recharge the batteries 129 in the pod 123. The depleted delivered pod 123 can be replaced with a replacement pod 123 having cargo that is to be delivered to a different location that includes fully charged batteries 129. The replacement pod 123 can be pushed and/or pulled with the standard aircraft tug from the cargo loading area to the wing assembly 101. The replacement pod 123 can be coupled to the wing assembly 101 and the assembled UAV 100 can fly to the next cargo delivery destination.
(38) The center of balance of the pod 123 is centrally located between the rear wheel(s) and the front wheel(s) of the landing gear 125. The center of balance of the wing assembly 101 is centrally located between the skids 117 such that the weight of the wing assembly can be supported by the skids 117. When the pod 123 is connected to a wing assembly 101 system, the coupled combination completes the UAV 100. A coupling mechanism can be used to connect the pod 123 mechanically and electrically to the wing assembly 101. In some embodiments, there can be separate mechanical and electrical coupling mechanisms to connect the wing assembly 101 to the pod 123. In the assembled state, the weight of the entire UAV 100 can be completely supported by the landing gear 125. The center of balance of the pod 123 coupled to the wing assembly 101 can be centrally located between the rear wheel(s) and the front wheel(s) of the landing gear 125.
(39) The process for shipping of cargo 133 using the present invention can typically consist of cargo 133 being placed onto a pallet 131. The cargo 133 can be secured to the pallet 131 with plastic wrap, rope, or other fasteners, adhesives, or straps. With reference to
(40) In an embodiment, the UAV can have the following specifications:
(41) TABLE-US-00001 Illustrated Possible Embodiments Range Wing Span 49 feet 30-60 feet 15 meters 10-20 meters Length 26 feet 20-32 feet 8 meters 6.4-9.6 meters Height 9 feet 7.2-10.8 feet 2.8 meters 2.24-3.36 meters Max. Drone Take 6,052 lbs. Off Mass 2,745 kgs. Drone Without 3,168 lbs. Battery Mass 1,437 kgs. Battery Mass 2,388 lbs. 1,910-2,884 lbs. 1,083 kgs. 866-1,308 kgs. Design Payload Mass 496 lbs 0-974 lbs. 0-225 kgs 0-442 kgs. Design Range 100+ miles 160+ kilometers Cruise Speed 150 mph 244 kilometers/hour
(42) In some embodiments, the maximum UAV mass at takeoff can be 6,052 lbs. with a combination of batteries 2,388 lbs. and a payload of up to 496 lbs. At the maximum takeoff weight, the UAV can fly at a cruising speed of 150 mph for a distance of 100 miles. If there is less payload weight, additional batteries can be added to the UAV which can result in a longer travel range of more than 100 miles. Conversely, if the UAV is carrying additional payload, then the batteries can be reduced to keep the total weight at or less than 6,052 lbs. and the range can be reduced to distances much lower than 100 miles.
(43) With reference to
(44) A forklift 145 such as a Toyota 8FGU25 Forklift can have a height of 84 inches and a width of 46 inches. The forklift 145 can move between the tail booms 109 and the vertical stabilizers 135 to access the rear portion of the pod 123. Thus, the heights of the wings 101, the tail booms 109 and the lower portions of the vertical stabilizers 135 can be lower than the 84 inch height of the forklift 145. However, in order to provide sufficient clearance, the tops of the vertical stabilizers 135 and the horizontal stabilizer 137 should be higher than 84 inches in height from the ground and can be as high as 100 inches. The horizontal distance between the tail booms 109 and the lower portions of the vertical stabilizers 135 should be more than 48 inches and can be up to 100 inches apart. The height of the horizontal stabilizer 137 can be at least 12, 18, or 24 inches higher than the height of the wings 101 and the tail booms 109.
(45) As the forklift 145 gets close to the door 127 of the pod 123, the cargo 133 and pallet 131 can be elevated to the loading elevation by means of the mast of the forklift 145 such that the bottom deckboard 155 of the pallet 131 is above the interior floor surface of the pod 123 that can be parallel to the ground and the top of the cargo 133 is below the lower top edge of the door 127 and interior uppermost of the pod 123. The interior floor surface of the pod 123 is designed to bear the weight of the cargo 133 and pallet 131. The forklift 145 can fully insert the cargo 133 and pallet 131 into the pod 123. The forklift 145 can then lower the cargo 133 and pallet 131 until the lower deckboard 155 of the pallet 131 contacts the top face of the interior floor surface of the pod 123 until the weight of the cargo 133, and the pallet 131 is fully supported by the interior floor surface of the pod 123. After the weight of the cargo 133 being transferred into the pod 123, the forklift 145 can then move backwards away from the pod 123 and the UAV 100 between the vertical stabilizer 135 and under horizontal stabilizer 137. Once the forklift 145 is clear of the UAV 100, the rear door(s) 127 can be closed. Upon the door(s) 127 being closed, the pod 123 forms an aerodynamic shape, that can be a tear drop, to reduce drag forces when in flight. The UAV 100 can then fly to the destination.
(46) In some embodiments, a pod pull cart 147 can have a tow bar that can be coupled to the front wheel of the landing gear 125 and used to pull the assembled UAV 100 or just the pod 123. The pod pull cart 147 can be used to move a pod 123 from a cargo loading area to a wing assembly 101 where the pod 123 can be coupled to the wing assembly 101 before flight. The pod pull cart 147 can be used to move the pod 123 away from the wing assembly 101 after the pod 123 can be decoupled from the wing assembly 101 after flight to a cargo unloading area. The pod pull cart 147 can be used to move the pod 123 from a cargo loading area to the wing assembly 101 before the pod 123 is coupled to the wing assembly 101 before a flight. The pod pull cart 147 can also be used to move assembled UAV 100 to any desired location such as into a UAV hangar to protect the UAV 100 from the environment or to a launch area before takeoff.
(47) With reference to
(48) In an alternative embodiment as shown in
(49) The present invention and some of its advantages have been described in detail for some embodiments. It should be understood that although the process is described with reference to a device, system, and method the process may be used in other contexts as well. It should also be understood that various changes, substitutions, and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims. An embodiment of the invention may achieve multiple objectives, but not every embodiment falling within the scope of the attached claims will achieve every objective. Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods, and steps described in the specification. A person having ordinary skill in the art will readily appreciate from the disclosure of the present invention that processes, machines, manufacturing steps, compositions of matter, means, methods, or steps, presently existing or later to be developed are equivalent to, and fall within the scope of, what is claimed. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacturing steps, compositions of matter, means, methods, or steps.