CN209369949U - A kind of turbofan nacelle by-pass air duct thrust reverser - Google Patents
A kind of turbofan nacelle by-pass air duct thrust reverser Download PDFInfo
- Publication number
- CN209369949U CN209369949U CN201822155173.7U CN201822155173U CN209369949U CN 209369949 U CN209369949 U CN 209369949U CN 201822155173 U CN201822155173 U CN 201822155173U CN 209369949 U CN209369949 U CN 209369949U
- Authority
- CN
- China
- Prior art keywords
- air duct
- pass air
- thrust reverser
- door
- pressurized strut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of turbofan nacelle by-pass air duct thrust reverser provided by the utility model, when device is closed, pressurized strut is extended outwardly to maximum travel position, front flow guiding plate, rear deflector and bottom choked flow door is driven to close, covering and inside panel are overlapped out of my cabin with engine blower completely respectively, by-pass air duct air-flow passes through without blockage runner completely, does not generate additional friction to by-pass air duct.When device is opened, pressurized strut is inwardly retracted to minimum stroke position, front flow guiding plate, rear deflector and bottom choked flow door is driven to open, by-pass air duct air-flow is kept off by bottom choked flow gate resistance, radial motion is guided through deflector and is discharged, the outer wall in engine core cabin is opened and reached to bottom choked flow door, reaches resistance flowing effect.The advantages of combining cascade type thrust reverser and flap-type rotation baffling door thrust reverser, simplifies component, reduces construction weight, movement mechanism is flexible, and counter push away works well.
Description
Technical field
The utility model relates to a kind of engine reverse thrust device, in particular to contain outside a kind of turbofan nacelle
Road thrust reverser belongs to engine reverse thrust apparatus structure design field.
Background technique
Engine reverse thrust device is the equipment of modern passenger aircraft indispensability, is to generate setting for thrust contrary with aircraft flight
It is standby, it acts on exactly the opposite with effect when engine work.The raising of air speed necessarily make aircraft landing it is sliding run away from
From increase, in order to shorten ground run distance, need using necessary special retarding device.Common retarding method has wheel braking to subtract
Speed, drag parachute slow down, hook slows down, wing flap control is slowed down and propulsive thrust slows down.Wherein, thrust reverser is aboard
Apply the most extensive.Thrust reverser is not only able to maintain retardation efficiency until making speed zero (aircraft halts), and
Braking effect will not be affected due to or ground icing moist because of runway.Do not require airport that special equipment is set, not by landing face
Long-pending restriction, it is steadily more reliable than other several ways of deceleration, so being used by many transporters and airliner.Since using anti-
Since thrust device, aircraft landing ground run distance is shortened within 450m by 3000m.Thus, thrust reverser has been recognized
It is the essential standing device of the modern and following high-performance transit aircraft.
There are mainly three types of engine reverse thrust devices for the prior art:
First is that grab type THR REV is also referred to as clampshell.After this kind of thrust reverser is necessarily mounted at the nacelle under wing
End, by entire nacelle duct rear end thereof.The device is generally used for the pure turbojet or small bypass ratio hair of non-fan
In motivation.The disadvantage is that: than cumbersome, the propulsive thrust load of receiving is big, and propulsive thrust air-flow is easy to be applied on airframe structure.
Second is that cascade type thrust reverser is made of propulsive thrust guide-ring, leaf grating lid and spoiler.When work, radome fairing to
After move (or lid open) and expose leaf grating, spoiler blocks the duct air-flow flowed backward, folds into it and orients outflow in leaf grating.
Cascade type thrust reverser mainly works in duct air-flow, is commonly installed the middle part of nacelle under the wings of an airplane, propulsive thrust air-flow is in machine
It is sprayed before nose of wing.Cascade type thrust reverser is suitable for turbofan.The disadvantage is that: mechanical coordination part is more, knot
Structure is complicated, and leaf grating lid and spoiler flow leakage may cause engine performance reduction.
Third is that flap-type rotates baffling door thrust reverser (also referred to as crocodile mouth formula) by circumferentially arranged on nacelle side wall
Multiple groups pivot door and driving mechanism composition.When work, baffling door is pivoted, and spoiler is played in the inboard portion of every group of door
Effect, blocks duct air-flow；Exterior portion generates propulsive thrust to directional stream-guidance effect has been vented.Baffling door is counter pushes away for flap-type rotation
Power device is relatively applicable in fanjet.From feature, although structure is simpler than cascade type, actuator stroke compared with
Greatly, the power needed is larger, increases weight.
In general, the prior art is primarily present following defect: first is that grab type THR REV than cumbersome, is born
Propulsive thrust load it is big, propulsive thrust air-flow is easy to be applied on airframe structure；Second is that cascade type thrust reverser mechanical coordination part is more,
Structure is complicated, and leaf grating lid and spoiler flow leakage may cause engine performance reduction；Third is that flap-type rotates, baffling door is counter to be pushed away
Power device actuator stroke is larger, and the power needed is larger, increases weight；Fourth is that the engine reverse thrust apparatus structure of the prior art
More complicated, weight is larger, and movement mechanism is inflexible, and counter to push away effect bad.
Utility model content
In view of the deficiencies of the prior art, a kind of turbofan nacelle by-pass air duct propulsive thrust provided by the utility model
Device, front flow guiding plate and rear deflector pass through coaxially connected the first rotation of formation in two holes of sprag and the cantilever respectively
Pair, front flow guiding plate and rear deflector pass through the second revolute pair of the coaxially connected formation in both ends of long struts Yu the connecting rod respectively, even
Bar connects drive link to drive choked flow door in bottom to move, and pressurized strut is by actuator driven.When device is closed, pressurized strut is to overhanging
Exhibition drives front flow guiding plate, rear deflector and bottom choked flow door to close to maximum travel position, respectively completely with engine blower cabin
Exterior skin and inside panel are overlapped, and by-pass air duct air-flow passes through without blockage runner completely, do not generate additional friction to by-pass air duct.Dress
When setting opening, pressurized strut is inwardly retracted to minimum stroke position, and front flow guiding plate, rear deflector and bottom choked flow door is driven to open,
By-pass air duct air-flow is kept off by bottom choked flow gate resistance, and radial motion is guided through deflector and is discharged, and bottom choked flow door, which is opened and reached, to be started
The outer wall of machine core nacelle, reaches resistance flowing effect.It combines cascade type thrust reverser and flap-type rotates the excellent of baffling door thrust reverser
Point, simplifies component, reduces construction weight, and movement mechanism is flexible, and counter push away works well.
To reach the above technical effect, technical solution used by the utility model is as follows:
A kind of turbofan nacelle by-pass air duct thrust reverser, including front flow guiding plate, rear deflector, cantilever, company
Bar, pressurized strut, actuator, drive link, bottom choked flow door are respectively arranged with sprag and length on front flow guiding plate and rear deflector
The upper center of bottom choked flow door is arranged in pillar, the cantilever, and front flow guiding plate and rear deflector pass through sprag and institute respectively
The first revolute pair of the coaxially connected formation in two holes of cantilever is stated, front flow guiding plate and rear deflector pass through long struts and the company respectively
The second revolute pair of the coaxially connected formation in the both ends of bar, the drive link are connected with the bottom choked flow door, and the connecting rod connects
Drive link is connect to drive choked flow door in bottom to move, the connecting rod is connected with the pressurized strut, and the pressurized strut is by actuator
Driving.
A kind of turbofan nacelle by-pass air duct thrust reverser, further, front flow guiding plate and rear deflector point
It is not mounted on the inside in engine blower cabin.
A kind of turbofan nacelle by-pass air duct thrust reverser, further, the actuator driven pressurized strut
Movement, and the pressurized strut can be rotated around the rotation axis of actuator simultaneously.
A kind of turbofan nacelle by-pass air duct thrust reverser, further, the rotation axis of the actuator with
Cantilever is fixed in engine blower cabin.
A kind of turbofan nacelle by-pass air duct thrust reverser, further, the pressurized strut is extended outwardly to
Maximum travel position drives front flow guiding plate, rear deflector and bottom choked flow door to close, covers out of my cabin with engine blower completely respectively
Skin and inside panel are overlapped, and by-pass air duct air-flow passes through without blockage runner completely, do not generate additional friction to by-pass air duct.
A kind of turbofan nacelle by-pass air duct thrust reverser, further, the pressurized strut is inwardly retracted to
Minimum stroke position drives front flow guiding plate, rear deflector and bottom choked flow door to open, and by-pass air duct air-flow is by bottom choked flow gate resistance
Gear, radial motion are guided through deflector and are discharged.
A kind of turbofan nacelle by-pass air duct thrust reverser, further, the pressurized strut is inwardly retracted to
Minimum stroke position, the bottom choked flow door are opened and are reached the outer wall in engine core cabin, reach resistance flowing effect.
A kind of turbofan nacelle by-pass air duct thrust reverser, further, outside turbofan nacelle
Duct thrust reverser is arranged on engine blower cabin by circumferential arrangement.
Compared with the prior art, the advantages of the utility model are:
1. a kind of turbofan nacelle by-pass air duct thrust reverser provided by the utility model, combines cascade type
The advantages of thrust reverser and flap-type rotation baffling door thrust reverser, component is simplified, reduces construction weight, movement mechanism spirit
Living, counter push away works well.
2. a kind of turbofan nacelle by-pass air duct thrust reverser provided by the utility model, when device is closed,
Pressurized strut is extended outwardly to maximum travel position, and front flow guiding plate, rear deflector and bottom choked flow door is driven to close, respectively completely with
Covering and inside panel are overlapped engine blower out of my cabin, and by-pass air duct air-flow passes through without blockage runner completely, does not produce to by-pass air duct
Raw additional friction.
3. a kind of turbofan nacelle by-pass air duct thrust reverser provided by the utility model, when device is opened,
Pressurized strut is inwardly retracted to minimum stroke position, drives front flow guiding plate, rear deflector and bottom choked flow door to open, by-pass air duct air-flow
It is kept off by bottom choked flow gate resistance, radial motion is guided through deflector and is discharged, and bottom choked flow door is opened and reaches engine core cabin
Outer wall reaches resistance flowing effect.
Detailed description of the invention
Fig. 1 is a kind of structural representation of turbofan nacelle by-pass air duct thrust reverser provided by the utility model
Figure.
Fig. 2 is that the utility model is mounted in engine nacelle fan nacelle, sectional view when being in close state.
Fig. 3 is that the utility model is mounted in engine nacelle fan nacelle, sectional view in the open state.
Fig. 4 is that the utility model is mounted in engine blower cabin, schematic side view in the open state.
Fig. 5 is that the utility model is mounted in engine blower cabin, schematic rear view in the open state.
Fig. 6 is the front flow guiding plate structural schematic diagram of the utility model.
Fig. 7 is the rear steering gate structural schematic diagram of the utility model.
Fig. 8 is the bottom spoiler structural schematic diagram of the utility model.
Description of symbols: 1- front flow guiding plate, deflector after 2-, 3- cantilever, 4- connecting rod, 5- pressurized strut, 6- actuator, 7-
Drive link, the bottom 8- choked flow door, 9- engine blower cabin, 10- engine core cabin.
Specific embodiment
With reference to the accompanying drawing, to a kind of turbofan nacelle by-pass air duct thrust reverser provided by the utility model
Technical solution be further described, so that those skilled in the art is better understood the utility model and can give
Implement.
Referring to Fig. 1 to Fig. 8, a kind of turbofan nacelle by-pass air duct thrust reverser provided by the utility model,
It is preceding including front flow guiding plate 1, rear deflector 2, cantilever 3, connecting rod 4, pressurized strut 5, actuator 6, drive link 7, bottom choked flow door 8
Sprag and long struts are respectively arranged on deflector 1 and rear deflector 2, the top of bottom choked flow door 8 is arranged in the cantilever 3
Middle part, front flow guiding plate 1 and rear deflector 2 pass through coaxially connected first turn of the formation in two holes of sprag and the cantilever 3 respectively
Dynamic pair, front flow guiding plate 1 and rear deflector 2 pass through coaxially connected the second rotation of formation in both ends of long struts and the connecting rod 4 respectively
Pair, the drive link 7 are connected with the bottom choked flow door 8, and the connecting rod 4 connects drive link 7 to drive bottom choked flow
Door 8 moves, and the connecting rod 4 is connected with the pressurized strut 5, and the pressurized strut 5 is driven by actuator 6.
As a preferred embodiment, a kind of turbofan nacelle by-pass air duct propulsive thrust dress provided by the utility model
It sets, front flow guiding plate 1 and rear deflector 2 are separately mounted to the inside in engine blower cabin 9.
As a preferred embodiment, a kind of turbofan nacelle by-pass air duct propulsive thrust dress provided by the utility model
It sets, the actuator 6 drives pressurized strut 5 to move, and the pressurized strut 5 can be rotated around the rotation axis of actuator 6 simultaneously.
As a preferred embodiment, a kind of turbofan nacelle by-pass air duct propulsive thrust dress provided by the utility model
It sets, the rotation axis and cantilever 3 of the actuator 6 are fixed in engine blower cabin 9.
As a preferred embodiment, a kind of turbofan nacelle by-pass air duct propulsive thrust dress provided by the utility model
It sets, the pressurized strut 5 is extended outwardly to maximum travel position, and front flow guiding plate 1, rear deflector 2 and bottom choked flow door 8 is driven to close
It closes, difference is overlapped with 9 exterior skin of engine blower cabin and inside panel completely, and by-pass air duct air-flow passes through without blockage stream completely
Road does not generate additional friction to by-pass air duct.
As a preferred embodiment, a kind of turbofan nacelle by-pass air duct propulsive thrust dress provided by the utility model
It sets, the pressurized strut 5 is inwardly retracted to minimum stroke position, and front flow guiding plate 1, rear deflector 2 and bottom choked flow door 8 is driven to beat
It opens, by-pass air duct air-flow is stopped by bottom choked flow door 8, and radial motion is guided through deflector and is discharged.
As a preferred embodiment, a kind of turbofan nacelle by-pass air duct propulsive thrust dress provided by the utility model
It sets, the pressurized strut 5 is inwardly retracted to minimum stroke position, and the bottom choked flow door 8 is opened and reaches engine core cabin 10
Outer wall, reach resistance flowing effect.
As a preferred embodiment, a kind of turbofan nacelle by-pass air duct propulsive thrust dress provided by the utility model
It sets, turbofan nacelle by-pass air duct thrust reverser is arranged on engine blower cabin 9 by circumferential arrangement.
In the embodiment depicted in figure 2, pressurized strut 5 flexes outward, and reaches maximum travel position, drive front flow guiding plate 1, after lead
Flowing plate 2 and bottom choked flow door 8 are closed, and difference is overlapped with fan nacelle exterior skin and inside panel completely, by-pass air duct air-flow completely not by
Ground is hindered to pass through runner.
In the embodiment shown in fig. 3, pressurized strut 5 is inwardly retracted to minimum stroke position, drive front flow guiding plate 1, after
Deflector 2 and bottom choked flow door 8 are opened, and by-pass air duct air-flow is stopped by bottom choked flow door 8, are radial motion, are guided through deflector
Discharge.
In the embodiment shown in fig. 4, which is installed on engine blower cabin by circumferential arrangement,
Front flow guiding plate 1, rear deflector 2 are in an open position.
In the embodiment shown in fig. 5, which is installed on engine blower cabin by circumferential arrangement,
Front flow guiding plate 1, rear deflector 2 are in an open position, and choked flow door 8 in bottom is in an open position, and end contacts engine core
10 outer wall of cabin, has achieved the effect that choked flow.
A kind of turbofan nacelle by-pass air duct thrust reverser provided by the utility model, it is anti-to combine cascade type
The advantages of thruster and flap-type rotation baffling door thrust reverser, component being simplified, construction weight is reduced, movement mechanism is flexible,
Counter push away works well.
The basic principles and main features and advantage of the utility model have been shown and described above.The technical staff of the industry
It should be appreciated that the present utility model is not limited to the above embodiments, the above embodiments and description only describe this
The principle of utility model, on the premise of not departing from the spirit and scope of the utility model, the utility model also has various change
And improvement, these various changes and improvements fall within the scope of the claimed invention.
Claims (8)
1. a kind of turbofan nacelle by-pass air duct thrust reverser, it is characterised in that: including front flow guiding plate (1), after lead
Flowing plate (2), cantilever (3), connecting rod (4), pressurized strut (5), actuator (6), drive link (7), bottom choked flow door (8), preceding water conservancy diversion
Sprag and long struts are respectively arranged on plate (1) and rear deflector (2), the cantilever (3) is arranged in bottom choked flow door (8)
Upper center, front flow guiding plate (1) and rear deflector (2) are coaxially connected by two holes of sprag and the cantilever (3) respectively
The first revolute pair is formed, front flow guiding plate (1) and rear deflector (2) are coaxial by long struts and the both ends of the connecting rod (4) respectively
Connection forms the second revolute pair, and the drive link (7) is connected with the bottom choked flow door (8), and connecting rod (4) connection is driven
Connecting rod (7) are moved to drive bottom choked flow door (8) to move, the connecting rod (4) is connected with the pressurized strut (5), the pressurized strut
(5) it is driven by actuator (6).
2. a kind of turbofan nacelle by-pass air duct thrust reverser according to claim 1, it is characterised in that: preceding
Deflector (1) and rear deflector (2) are separately mounted to the inside of engine blower cabin (9).
3. a kind of turbofan nacelle by-pass air duct thrust reverser according to claim 1, it is characterised in that: institute
Actuator (6) driving pressurized strut (5) movement is stated, and the pressurized strut (5) can be revolved around the rotation axis of actuator (6) simultaneously
Turn.
4. a kind of turbofan nacelle by-pass air duct thrust reverser according to claim 1, it is characterised in that: institute
It states the rotation axis of actuator (6) and cantilever (3) is fixed in engine blower cabin (9).
5. a kind of turbofan nacelle by-pass air duct thrust reverser according to claim 1, it is characterised in that: institute
It states pressurized strut (5) and is extended outwardly to maximum travel position, drive front flow guiding plate (1), rear deflector (2) and bottom choked flow door (8)
It closes, difference is overlapped with engine blower cabin (9) exterior skin and inside panel completely, and by-pass air duct air-flow passes through without blockage completely
Runner does not generate additional friction to by-pass air duct.
6. a kind of turbofan nacelle by-pass air duct thrust reverser according to claim 1, it is characterised in that: institute
It states pressurized strut (5) and is inwardly retracted to minimum stroke position, drive front flow guiding plate (1), rear deflector (2) and bottom choked flow door (8)
It opens, by-pass air duct air-flow is stopped by bottom choked flow door (8), and radial motion is guided through deflector and is discharged.
7. a kind of turbofan nacelle by-pass air duct thrust reverser according to claim 6, it is characterised in that: institute
It states pressurized strut (5) and is inwardly retracted to minimum stroke position, the bottom choked flow door (8) opens and reaches engine core cabin (10)
Outer wall, reach resistance flowing effect.
8. a kind of turbofan nacelle by-pass air duct thrust reverser according to claim 1, it is characterised in that: whirlpool
Duct-Burning Turbofan nacelle by-pass air duct thrust reverser is taken turns to be arranged on engine blower cabin (9) by circumferential arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822155173.7U CN209369949U (en) | 2018-12-21 | 2018-12-21 | A kind of turbofan nacelle by-pass air duct thrust reverser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822155173.7U CN209369949U (en) | 2018-12-21 | 2018-12-21 | A kind of turbofan nacelle by-pass air duct thrust reverser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209369949U true CN209369949U (en) | 2019-09-10 |
Family
ID=67829878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822155173.7U Active CN209369949U (en) | 2018-12-21 | 2018-12-21 | A kind of turbofan nacelle by-pass air duct thrust reverser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209369949U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441661A (en) * | 2018-12-21 | 2019-03-08 | 湖北鸿翼航空科技有限公司 | A kind of turbofan nacelle by-pass air duct thrust reverser |
-
2018
- 2018-12-21 CN CN201822155173.7U patent/CN209369949U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441661A (en) * | 2018-12-21 | 2019-03-08 | 湖北鸿翼航空科技有限公司 | A kind of turbofan nacelle by-pass air duct thrust reverser |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11485481B2 (en) | Deployable assembly for a propulsor | |
| CN106988926B (en) | Whirlpool axis turbofan combined cycle engine | |
| US2620622A (en) | Reverse thrust arrangement for braking jet-propelled aircraft | |
| US2420323A (en) | Wing-mounted jet-propulsion system with controllable discharge outlet | |
| US2941751A (en) | Spoiler for aircraft wings | |
| JPH05505992A (en) | Propulsion systems for vertical and short takeoff and landing airplanes | |
| EP3446962A1 (en) | Aircraft propulsion system and method | |
| US20030183723A1 (en) | Propulsion system for a vertical and short takeoff and landing aircraft | |
| US3792827A (en) | Vtol aircraft with cruciform rotor wing | |
| CN101374724A (en) | Emergency supply unit with a ram-air turbine adapted to be driven by an air stream and with an energy converter for aircraft | |
| CN102556338A (en) | Nacelle for aircraft | |
| CN102877982B (en) | Thrust reverser of aero-engine | |
| CN106628163A (en) | Supersonic unmanned combat air vehicle capable of achieving large-resistance deceleration and vertical take-off and landing | |
| CN209369949U (en) | A kind of turbofan nacelle by-pass air duct thrust reverser | |
| CN206694149U (en) | Whirlpool axle turbofan combined cycle engine | |
| US3088694A (en) | Wing-fan doors | |
| CN109441661A (en) | A kind of turbofan nacelle by-pass air duct thrust reverser | |
| CN104290903A (en) | Automatic splash-proof seaplane float | |
| CN208412092U (en) | A kind of more power fixed wing aircrafts | |
| CN109850128A (en) | Multistage air blowing circular rector high lift device and aircraft | |
| CN110641694A (en) | Automatic VTOL fixed wing unmanned aerial vehicle of folding rotor | |
| US2688455A (en) | Retractable surface support | |
| US3220669A (en) | Power plant mounting | |
| US3215369A (en) | Dual mission propulsion system | |
| US2610005A (en) | Propulsive means for vertical rising aircraft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |