Blended wing body aircraft with rear engines

Patent metadata

Field	Value
Publication number	US-12583585-B2
Application number	US-202418418643-A
Country	US
Kind code	B2
Filing date	Jan 22, 2024
Priority date	Jan 22, 2024
Publication date	Mar 24, 2026
Grant date	Mar 24, 2026

Abstract

Disclosed herein is an aircraft with engines positioned so as to avoid damage to other components of the aircraft. The aircraft may include a blended wing body aircraft. The engines may be positioned aft of a pressure vessel of the aircraft. The engines may be positioned aft of and/or above a fuel store of the aircraft. Such engine positioning may reduce the likelihood of damage to a pressure vessel and/or fuel store in the event of engine failure.

First claim

What is claimed is:

1 . A blended wing body aircraft comprising:
a main body comprising a pressure vessel, wherein the pressure vessel comprises a rear pressure bulkhead; one or more ribs attached to an aft face of the rear pressure bulkhead: a port wing and a starboard wing connected to the main body; and a first engine mechanically attached to at least a rib of the one or more ribs using an engine support structure comprising a plurality of hoop structures, including at least a first hoop structure located forward of a center of gravity of the first engine and at least a second hoop structure located aft of the center of gravity of the first engine.

2 . The blended wing body aircraft of claim 1 , wherein the pressure vessel comprises a passenger compartment.

3 . The blended wing body aircraft of claim 1 , further comprising a centerbody rear spar, wherein an entirety of the first engine is positioned aft of the entirety of the centerbody rear spar.

4 . The blended wing body aircraft of claim 1 , further comprising a second engine, wherein an entirety of the second engine is positioned aft of the entirety of the rear pressure bulkhead of the pressure vessel.

5 . The blended wing body aircraft of claim 1 , wherein all engines of the aircraft are positioned aft of a rear bulkhead of the pressure vessel.

6 . The blended wing body aircraft of claim 1 , wherein the plurality of hoop structures comprise a plurality of horseshoe structures, wherein each horseshoe structure of the plurality of horseshoe structures is configured to vertically restrain a position of the first engine.

7 . The blended wing body aircraft of claim 1 , wherein an entirety of the pressure vessel is outside of a rotor burst zone of the first engine.

8 . The blended wing body aircraft of claim 1 , wherein there is no clear demarcation between the wings and the main body of the aircraft along a leading edge of the aircraft.

9 . The blended wing body aircraft of claim 1 , further comprising a first fuel store, wherein an entirety of the first fuel store is outside of a rotor burst zone of the first engine.

10 . The blended wing body aircraft of claim 9 , further comprising a second fuel store and a second engine, wherein an entirety of each of a first and second fuel stores is outside of the rotor burst zone of the first engine and a rotor burst zone of the second engine.

11 . The blended wing body aircraft of claim 10 , wherein the first fuel store is positioned in a transition portion of blended wing body between the main body and the port wing, and wherein the second fuel store is positioned in a transition portion of blended wing body between the main body and the starboard wing.

12 . The blended wing body aircraft of claim 1 , further comprising a first fuel store, wherein an entirety of the first engine is positioned entirely aft of the first fuel store.

13 . The blended wing body aircraft of claim 1 , further comprising a first fuel store, wherein each engine of the aircraft is positioned entirely aft of an entirety of the first fuel store.

14 . The blended wing body aircraft of claim 1 , further comprising a first fuel store, wherein an entirety of the first engine is positioned entirely above the first fuel store.

15 . The blended wing body aircraft of claim 1 , further comprising a first fuel store, wherein each engine of the aircraft is positioned entirely above an entirety of the first fuel store.

16 . The blended wing body aircraft of claim 1 , wherein the first engine comprises a turbine.

17 . The blended wing body aircraft of claim 1 , wherein the first engine comprises a high pressure turbine and a low pressure turbine, wherein the high pressure turbine is configured to spin faster than the low pressure turbine.

18 . The blended wing body aircraft of claim 17 , wherein an entirety of the pressure vessel is outside of a rotor burst zone of the high pressure turbine.

19 . The blended wing body aircraft of claim 17 , further comprising a first fuel store, wherein an entirety of the first fuel store is outside of a rotor burst zone of the high pressure turbine.

20 . A blended wing body aircraft comprising:
a main body comprising a pressure vessel, wherein the pressure vessel comprises a rear pressure bulkhead; one or more ribs attached to an aft face of the rear pressure bulkhead; a port wing and a starboard wing connected to the main body; and a first engine mechanically attached to at least a rib of the one or more ribs using an engine support structure comprising a plurality of hoop structures, including at least a first hoop structure located forward of a center of gravity of the first engine and at least a second hoop structure located aft of the center of gravity of the first engine and wherein the first engine comprises a high pressure turbine and a low pressure turbine, wherein the high pressure turbine is configured to spin faster than the low pressure turbine, wherein the high pressure turbine is positioned aft of an entirety of the rear pressure bulkhead of the pressure vessel.

Assignees

• Jetzero Inc

Inventors

• Vassberg John Charles
• Page Mark Allan
• Rawdon Blaine Knight

Classifications

• B64D27/14 Primary

  within, or attached to, fuselages · CPC title

• B64C2039/105

  of blended wing body type · CPC title

• B64D27/18

  within, or attached to, wings · CPC title

• B64D27/12

  within, or attached to, wings · CPC title

• B64D37/04

  Arrangement thereof in or on aircraft · CPC title