Aircraft with outboard-stowed landing gear

Patent metadata

Field	Value
Publication number	US-12391371-B2
Application number	US-202217958779-A
Country	US
Kind code	B2
Filing date	Oct 3, 2022
Priority date	Oct 3, 2022
Publication date	Aug 19, 2025
Grant date	Aug 19, 2025

Abstract

A landing gear apparatus for an aircraft including at least a nose gear disposed forward of a neutral point of an aircraft by a first distance and at least a main gear disposed aft of the neutral point of the aircraft by a second distance. The at least a nose gear and the at least a main gear are in communication with one another.

First claim

What is claimed is:

1. A blended wing body (BWB) aircraft with stowed landing gears outboard of a cabin, the BWB aircraft comprising:
an exterior surface of a lower airframe of the BWB aircraft;
an interior surface opposite the exterior surface of the lower airframe surrounding a payload volume and a cargo volume, wherein the payload volume comprises the cabin;
a plurality of gear wells comprising at least a main gear well and at least a nose gear well, wherein:
each gear well of the plurality of gear wells includes an opening in the exterior surface of the lower airframe of the BWB aircraft;
the at least a main gear well has a main gear well volume that is located outboard of the payload volume, wherein the at least a main gear well protrudes into an interior of the cargo volume, and wherein the at least a main gear well is disposed in a blended section of the BWB aircraft, aft of a center of gravity (CG) of the BWB aircraft and wherein the blended section comprises no strong delineation between a body and a wing of the BWB aircraft;
the at least a nose gear well has a nose gear well volume that is located outboard of the payload volume; and
each gear well is disposed about the center of gravity of the BWB aircraft;

a plurality of main gear struts, wherein at least one main gear strut of the plurality of main gear struts is mounted to the lower airframe outboard from the payload volume by a distance equal to a length of a main landing gear of at least a main landing gear of the BWB aircraft; and
a plurality of landing gears disposed at the plurality of gear wells and comprising the at least a main landing gear and at least a nose landing gear, wherein the at least a nose landing gear includes a nose linkage and the at least a main landing gear includes a main linkage and wherein the nose linkage and the main linkage are connected by a longitudinal member which is driven by both the main linkage and the nose linkage such that movement of the at least a nose landing gear and the at least a main landing gear is affected, and wherein:
at least one of the at least a main landing gear and the at least a nose landing gear comprises a jump strut and pneumatic spring assist;
each landing gear of the plurality of landing gears has a proximal end located within the gear well volume and a distal end;
each landing gear has at least a wheel journaled at the distal end;
each landing gear is movable between a deployed position and a retracted position; and
the at least a nose landing gear is configured to extend corresponding to retraction of the at least a main landing gear by tuning a suspension.

2. The BWB aircraft of claim 1 , wherein the at least a nose landing gear is disposed forward of the center of gravity and the at least a main landing gear is located aft of the center of gravity.

3. The BWB aircraft of claim 1 , wherein the plurality of landing gears is in tricycle formation.

4. The BWB aircraft of claim 1 , wherein the at least a main landing gear is stowed within the at least a main gear well.

5. The BWB aircraft of claim 1 , wherein the at least a nose landing gear and the at least a main landing gear are further configured to be retracted and deployed in tandem.

6. The BWB aircraft of claim 1 , wherein a plurality of nose wheels are arranged in tandem.

7. The BWB aircraft of claim 1 , wherein the body comprises carbon fiber.

8. The BWB aircraft of claim 1 , wherein the at least a main landing gear is coupled to a lateral shaft.

9. The BWB aircraft of claim 1 , wherein the at least a main landing gear is connected to the main linkage.

10. The BWB aircraft of claim 1 , wherein the at least a nose landing gear is connected to the nose linkage.

11. The BWB aircraft of claim 8 , wherein the lateral shaft is a torque tube.

12. The BWB aircraft of claim 1 , wherein the plurality of landing gears comprises at least a brake.

13. The BWB aircraft of claim 1 , wherein the jump strut comprises an electrical drive.

14. The BWB aircraft of claim 1 , wherein the jump strut comprises a spring assist feature.

15. The BWB aircraft of claim 1 , wherein the at least a nose landing gear is further configured to retract corresponding to extension of the at least a main landing gear by tuning the suspension.

Assignees

• Jetzero Inc

Inventors

• Page Mark A

Classifications

• B64C25/04

  Arrangement or disposition on aircraft · CPC title

• B64C2025/008

  Comprising means for modifying their length, e.g. for kneeling, for jumping, or for leveling the aircraft · CPC title

• B64C39/10 Primary

  All-wing aircraft · CPC title

• B64C2039/105

  of blended wing body type · CPC title

• B64C1/10

  Bulkheads · CPC title