US3776467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for actuating a multiple tube jet defector device
Assignee: MTU Aero Engines AG
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Filing: 1972-02-25
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Granted: 1973-12-04
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Expires: 1992-02-25
Abstract
Abstract A multiple tube jet deflector device having two tubes arranged in series downstream of a jet engine fixed inlet pipe. The upstream tube is rotatable connected to the downstream end of the inlet pipe along a first bearing face disposed perpendicularly to the centerline of the inlet pipe. The downstream end of the downstream tube is constructed as an exhaust nozzle. The downstream tube is rotatably connected to the downstream end of the upstream tube along a second bearing face which is inclined relative to the first bearing face such that relative rotation of said tubes effects an angular deflection of the centerline of the downstream tube with respect to the centerline of the inlet pipe. Actuating devices are provided for effecting independent rotation of each of the tubes with respect to the inlet pipe. These actuating devices include ring gears attached to the circumference of the respective tubes and pinions or chain and sprocket arrangements for rotatably driving these ring gears. Actuators are arranged on the circumference of the inlet pipe for driving the pinions or sprockets. A transmission arrangement for coupling the actuator to the pinion or sprocket associated with the downstream tube is rotatably supported on the circumference of the upstream tube by ball bearings or the like. This transmission arrangement includes an annular member including two ring gears disposed about the circumference of the upstream tube. One of these last mentioned ring gears is driven directly by the actuator for the downstream tube while the other is coupled to a universal drive joint which in turn is connected to the pinion or sprocket for driving the ring gears on the downstream tube. A shroud formed by an extension of the upstream tube over the outside of the inlet pipe may be provided for mounting much of the gearing and transmission structure so as to isolate this structure from heat in the gases passing internally of the tubes. An afterburner or reheating means may also be provided in said tubes.
Inventors
- 👤 F Riemerschmid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:01
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/002; F02K1/004
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
407 words
A jet deflector arrangement for use on a jet engine or the like having a relatively fixed inlet pipe with gases flowing therethrough; said arrangement comprising: first and second tubular members in communication with the gases in said inlet pipe, one end of said first tubular member being rotatably attached to the downstream end of said inlet pipe for rotation about an axis extending perpendicularly to a first bearing plane, the other end of said first tubular member being rotatably attached to the upstream end of said second tubular member for rotation about an axis extending perpendicularly to a second bearing plane, the downstream end of said second tubular member being constructed as an exhaust nozzle for discharging the gases passing therethrough, said first and second bearing planes being angularly inclined with respect to one another such that relative rotation of said first and second tubular members causes a deflection of the centerline of said second tubular member with respect to the centerline of said inlet pipe, first actuating means for imparting relative rotational movement between said inlet pipe and said first tubular members, second actuating means for imparting relative rotational movement between said first tubular member and said second tubular member, and transmitting means for operatively connecting said first and second actuating means such that the rotation of said first tubular member with respect to said inlet pipe can be carried out independently of rotation of said second tubular member with respect to said first tubular member, wherein an annular carrier is rotatably mounted at the circumference of the first tubular member, said carrier having first and second ring gears formed along the circumference thereof, wherein first driving means drivingly connect an output shaft of said second actuator forming part of said second actuating means with said first ring gear, wherein rotative connection means are arranged between said second ring gear and said second tubular member for drivingly connecting said second ring gear with said second tubular member, said rotative connection means including second driving means in direct driving engagement with said second ring gear, and wherein the transmission ratio between the output shaft of the second actuator and the first ring gear is the same as the transmission ratio between the second ring gear and the rotative connection means, whereby stoppage of the output shaft of said second actuator precludes relative rotation of said first and second tubular members during rotation of said first member.
Claim 2
Dependent Claim
407 words
A jet deflector arrangement for use on a jet engine or the like having a relatively fixed inlet pipe with gases flowing therethrough; said arrangement comprising: first and second tubular members in communication with the gases in said inlet pipe, one end of said first tubular member being rotatably attached to the downstream end of said inlet pipe for rotation about an axis extending perpendicularly to a first bearing plane, the other end of said first tubular member being rotatably attached to the upstream end of said second tubular member for rotation about an axis extending perpendicularly to a second bearing plane, the downstream end of said second tubular member being constructed as an exhaust nozzle for discharging the gases passing therethrough, said first and second bearing planes being angularly inclined with respect to one another such that relative rotation of said first and second tubular members causes a deflection of the centerline of said second tubular member with respect to the centerline of said inlet pipe, first actuating means for imparting relative rotational movement between said inlet pipe and said first tubular members, second actuating means for imparting relative rotational movement between said first tubular member and said second tubular member, and transmitting means for operatively connecting said first and second actuating means such that the rotation of said first tubular member with respect to said inlet pipe can be carried out independently of rotation of said second tubular member with respect to said first tubular member, wherein an annular carrier is rotatably mounted at the circumference of the first tubular member, said carrier having first and second ring gears formed along the circumference thereof, wherein first driving means drivingly connect an output shaft of said second actuator forming part of said second actuating means with said first ring gear, wherein rotative connection means are arranged between said second ring gear and said second tubular member for drivingly connecting said second ring gear with said second tubular member, said rotative connection means including second driving means in direct driving engagement with said second ring gear, and wherein the transmission ratio between the output shaft of the second actuator and the first ring gear is the same as the transmission ratio between the second ring gear and the rotative connection means, whereby stoppage of the output shaft of said second actuator precludes relative rotation of said first and second tubular members during rotation of said first member.
Claim 3
Dependent Claim
22 words
An arrangement according to claim 1, characterized in that said first attachment plane extends perpendicularly to the centerline of the inlet pipe.
Claim 4
Dependent Claim
29 words
An arrangement according to claim 1, characterized in that said first and second driving means include pinions directly engaging teeth of the respective first and second ring gear means.
Claim 5
Dependent Claim
37 words
An arrangement according to claim 1, characterized iN that said first and second driving means include chain and wheel sprocket arrangements with respective chain links directly engaging teeth of the respective first and second ring gear means.
Claim 6
Dependent Claim
53 words
An arrangement according to claim 1, wherein a third ring gear is rotatably fixed to the circumference of said first tubular member and third driving means are attached to an output shaft of a first actuator forming part of said first actuating means, said third driving means directly engaging said third ring gear.
Claim 7
Dependent Claim
47 words
An arrangement according to claim 1, wherein a fourth ring gear is rotatably fixed to the circumference of said second tubular member and fourth driving means are attached to an output shaft of said rotative connection means, said fourth driving means directly engaging said fourth ring gear.
Claim 8
Dependent Claim
47 words
An arrangement according to claim 5, wherein a fourth ring gear is rotatably fixed to the circumference of said second tubular member and fourth driving means are attached to an output shaft of said rotative connection means, said fourth driving means directly engaging said fourth ring gear.
Claim 9
Dependent Claim
29 words
An arrangement according to claim 7, characterized in that said first, second, third and fourth driving means all include pinions directly engaging teeth of the perspective associated ring gears.
Claim 10
Dependent Claim
37 words
An arrangement according to claim 7, characterized in that said first, second, third and fourth driving means all include chain and wheel sprocket arrangements with respective chain links directly engaging teeth of the respective associated ring gears.
Claim 11
Dependent Claim
29 words
An arrangement according to claim 1, characterized in that said rotative connection means includes universal joint means for accommodating relative pivotal movement of said first and second tubular members.
Claim 12
Dependent Claim
29 words
An arrangement according to claim 7, characterized in that said rotative connection means includes universal joint means for accommodating relative pivotal movement of said first and second tubular members.
Claim 13
Dependent Claim
29 words
An arrangement according to claim 8, characterized in that said rotative connection means includes universal joint means for accommodating relative pivotal movement of said first and second tubular members.
Claim 14
Dependent Claim
29 words
An arrangement according to claim 9, characterized in that said rotative connection means includes universal joint means for accommodating relative pivotal movement of said first and second tubular members.
Claim 15
Dependent Claim
33 words
An arrangement according to claim 6, wherein said rotative connecting means is attached to said first tubular member at a circumferential position corresponding to the shortest axial extent of said first tubular member.
Claim 16
Dependent Claim
50 words
An arrangement according to claim 1, wherein said first tubular member is constructed at its upstream end in the shape of a substantially cylindrical shroud, said shroud being rotatably supported at the circumference of the inlet pipe, and wherein the carrier is rotatably supported at the circumference of said shroud.
Claim 17
Dependent Claim
22 words
An arrangement according to claim 15. wherein bearing support means for parts of the rotative connection means is fixed to said shroud.
Claim 18
Dependent Claim
20 words
An arrangement according to claim 15, wherein said shroud is constructed to be separately disengageable from said first tubular means.
Claim 19
Dependent Claim
50 words
An arrangement according to claim 5, wherein said first tubular member is constructed at its upstream end in the shape of a substantially cylindrical shroud, said shroud being rotatably supported at the circumference of the inlet pipe, and wherein the carrier is rotatably supported at the circumference of said shroud.
Claim 20
Dependent Claim
17 words
An arrangement according to claim 18, wherein said third ring gear is fixedly mounted on said shroud.
Claim 21
Dependent Claim
21 words
An arrangement according to claim 15, wherein said shroud is supported by ball bearings on the surface of the inlet pipe.
Claim 22
Dependent Claim
23 words
An arrangement according to claim 15, wherein flame holder means are mounted in said inlet pipe in the area circumscribed by said shroud.
Claim 23
Dependent Claim
16 words
An arrangement according to claim 1, wherein flame holder meanS are provided in said inlet pipe.
Claim 24
Dependent Claim
33 words
An arrangement according to claim 1, wherein said rotative connecting means is attached to said first tubular member at a circumferential position corresponding to the longest axial extent of said first tubular member.
Claim 25
Dependent Claim
33 words
An arrangement according to claim 1, wherein said rotative connecting means is attached to said first tubular member at a circumferential position corresponding to the shortest axial extent of said first tubular member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |