Amphibious Large Aircraft Without Airstairs

• US 20110284683A1
• Filed: 03/01/2010
• Published: 11/24/2011
• Est. Priority Date: 03/04/2009
• Status: Active Grant

• Current Assignee: Shiying Liu
• Original Assignee: Shiying Liu
• Inventors: Liu, Shiying
• Granted Patent: US 8,453,963 B2
• Time in Patent Office: Days
• US Class Current: 244/12.3
• CPC Class Codes: B60F 3/00 Amphibious vehicles, i.e. vehicles capable of travelling both on land and on water; Land vehicles capable of travelling under water buoyant wheels B60B ; equipment forming part of, or attachable to vessels, facilitating transport over land B63C13/00
• CPC Class Codes: B64C 1/00 Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
• CPC Class Codes: B64C 2001/0045 Fuselages characterised by special shapes
• CPC Class Codes: B64C 25/001 Devices not provided for in the groups B64C25/02 - B64C25/68
• CPC Class Codes: B64C 35/005 with propellers, rudders or brakes acting in the water
• CPC Class Codes: B64C 35/008 Amphibious sea planes
• CPC Class Codes: Y02T 50/10 Drag reduction

Abstract

An amphibious large aircraft without airstairs is provided. The fuselage (7) of the amphibious large aircraft is flat, and the shape of its bottom is rectangular. The longitudinal cross-section of the fuselage has a shape of the cross-section of a win, so the lift can be generated by the fuselage during flight, and the flight efficiency is increased by 30-40%. The fuselage has only one floor, wherein the passenger cabin (6) is set in the front of the fuselage, and the cargo hold (21) is mounted above the rear. The wings (8) are suspended towards two sides from upper side of the fuselage. A jet engine (30) is mounted above the rear of the fuselage and adjacent to the tail wing. Because landing gears (4, 9) can be lifted vertically and the landing gear wells (3, 10) mounted in the fuselage are provided with fore-and-aft sliding doors (32, 33), the fuselage can stop close to the ground. It is no need for the passenger to go on and off the aircraft via the airstairs and escape from the aircraft via the inflator slide in en emergency. It can be more convenient for the cargo to enter or exit the aircraft when the aircraft is used as a freight aircraft. Because the fuselage is flat, the gliding capability and the ground effect of the aircraft are better, and the aircraft can takeoff, land and cruise on the wide water. The full-length, wingspan and height of the aircraft are all reduced by 25-30% compared with the current aircraft of the same scale, thus the floor space and the investment of the manufacturer, the maintenance factory, the garage and the aerodrome are all reduced.

Claims

1. A type of large amphibious aircraft without airstairs, which comprises a fuselage, a pilot compartment, one or more airfoils, one or more empennages, one or more engines, one or more undercarriages and one or more vertical lift propeller devices in an ordered assembly, is characterized in that:

the pilot compartment protrudes from the flat and oblong shaped fuselage;

the longitudinal sections of the fuselage are in the shape of the sections of the airfoil;

airfoils extend to two sides from the airfoil assembly center at the center top section of the fuselage;

the jet engine is mounted on the rear oblong fuselage and near the empennage;

all the undercarriages are mounted in the passenger cabin;

the vertical lift propeller devices are mounted at the two rear corners of the fuselage.

2. A type of large amphibious aircraft without airstairs, as described in the claim 1, is characterized in that:

the fuselage is of a flat oblong shape at the longitudinal plane;

the pilot compartment protrudes from the middle section of the fuselage;

the longitudinal sections of the fuselage are in the shape of the sections of the airfoil;

the lower fuselage serves as the passenger cabin with sufficient upper space for the comfort of the passengers;

the middle top section above the passenger cabin is arranged with the airfoil assembly center;

the gradually lower space in the rear fuselage serves as the cargo hold and the fuselage empennage;

the fuselage empennage can flap up and down around the rotating shaft behind the cargo hold;

both sides of the fuselage are arc planes;

the passenger cabin are divided by the flat transverse frameworks into several passenger compartments with columns;

the upper and lower parts and both sides of columns are reinforced by the oblique struts in the luggage compartment and the space underneath the seats;

the arc frameworks in transverse framework of the passenger cabin are reinforced with the oblique struts at the identical position of the arc wall on both sides of the fuselage;

the average projection length of the oblique struts in the various compartments of the passenger cabin cell is ⅓

the span of said passenger cabin cell;

the interspacing of the transverse frameworks of the passenger cabin is arranged to be the same as that of the seats along the longitudinal direction of the passenger cabin; and

all rows of seats in the passenger cabin are aligned with the transverse frameworks of the passenger cabin, and mounted longitudinally in the center by passing across the corresponding oblique struts.

3. A type of large amphibious aircraft without airstairs, as described in the claim 1, is characterized in that:

the two front undercarriage bays and several MLG bays are mounted in the fuselage;

the front undercarriages are mounted within the front undercarriages bay;

the MLGs are mounted within the MLG bays;

all the front undercarriages and the MLGs are vertically retractable;

all the front undercarriage bays and the MLG bays are mounted with the front and rear sliding doors.

4. A type of large amphibious aircraft without airstairs, as described in the claim 1, is characterized in that:

a type of vertical lift propeller device is formed by the orderly assembly of the fuel-oil engine in the cargo hold, the stationary gearbox, the movable gearbox, and the propellers in the propeller chamber;

the propeller chamber is mounted with the front and rear sliding doors.

5. A type of vertical lift propeller device, as described in the claim 4, is characterized in that:

one big and one small hydraulic cylinders is fixed on the top casing of the stationary gearbox;

the piston of the big hydraulic cylinder is connected to the top of the moveable gearbox;

the piston of the small hydraulic cylinder is connected to the top of the steering sleeve;

the double blots of the steering sleeve are encased in one loose bevel gear in the upper and lower parts respectively, of which one loose bevel gear meshes the bevel gear at all time;

the shaft of the bevel gear runs across the stationary gearbox and the fuselage framework and is connected with the fuel-oil engine by coupling;

the two loose bevel gears and the four plates of the steering sleeve are passed through by the center hexagonal shaft of the moveable gearbox; and

the hexagonal shaft also runs across the upper and lower casing of the stationary gearbox straight through the hole on the top surface of the fuselage.

6. A type of vertical lift propeller device, as described in the claim 3, is characterized in that:

the two bevel gears in moveable gearbox are vertical connected;

wherein the shaft of the vertically mounted bevel gear extrudes from the moveable gearbox and connects with the propeller;

the hexagonal shaft above the horizontal bevel gear runs across the casing of the stationary gearbox and the hexagonal holes at the center of the two loose bevel gears; and

the top surface of the moveable gearbox is connected with the piston of the big hydraulic cylinder.

7. A type of large amphibious aircraft without airstairs, as described in the claim 1, is characterized in that:

one or more U-grooves with snap blots are set at the intersection of the bottom frame of the transverse framework of the passenger cabin with the columns and the frameworks along the arc sections on both sides;

the underplates are mounted in the snap slots;

the strip air cushions are mounted within the U-grooves and are supported by the underplates.