BR8905274A - Sistema de mudanca de passo para uma helice em contra-rotacao - Google Patents
Sistema de mudanca de passo para uma helice em contra-rotacaoInfo
- Publication number
- BR8905274A BR8905274A BR898905274A BR8905274A BR8905274A BR 8905274 A BR8905274 A BR 8905274A BR 898905274 A BR898905274 A BR 898905274A BR 8905274 A BR8905274 A BR 8905274A BR 8905274 A BR8905274 A BR 8905274A
- Authority
- BR
- Brazil
- Prior art keywords
- counter
- step change
- change system
- rotation propeller
- propeller
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/30—Blade pitch-changing mechanisms
- B64C11/306—Blade pitch-changing mechanisms specially adapted for contrarotating propellers
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Retarders (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/259,369 US4936746A (en) | 1988-10-18 | 1988-10-18 | Counter-rotation pitch change system |
Publications (1)
Publication Number | Publication Date |
---|---|
BR8905274A true BR8905274A (pt) | 1990-05-22 |
Family
ID=22984656
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR898905274A BR8905274A (pt) | 1988-10-18 | 1989-10-17 | Sistema de mudanca de passo para uma helice em contra-rotacao |
Country Status (4)
Country | Link |
---|---|
US (1) | US4936746A (pt) |
EP (1) | EP0363997A3 (pt) |
JP (1) | JPH02155894A (pt) |
BR (1) | BR8905274A (pt) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3941852A1 (de) * | 1989-12-19 | 1991-06-20 | Mtu Muenchen Gmbh | Propfantriebwerk mit zwei entgegengesetzt drehenden fanrotoren |
JP2515864Y2 (ja) * | 1990-02-02 | 1996-10-30 | 川崎重工業株式会社 | 船舶用ポッド型二重反転プロペラ |
US5242265A (en) * | 1990-07-23 | 1993-09-07 | General Electric Company | Aircraft pitch change mechanism |
US5190441A (en) * | 1990-08-13 | 1993-03-02 | General Electric Company | Noise reduction in aircraft propellers |
US5213471A (en) * | 1990-09-04 | 1993-05-25 | General Electric Company | Propeller pitch control |
EP0951816B1 (de) | 1998-04-24 | 2003-03-05 | Roberine BV | Grundstückspflegefahrzeug mit einem Arbeitsgerät |
GB2346657A (en) * | 1999-02-09 | 2000-08-16 | Airship Tech Serv Ltd | Propellers for airship propulsion and control |
US7124662B2 (en) * | 2004-01-30 | 2006-10-24 | Pratt & Whitney Canada Corp. | Reversible driving apparatus for PCU pumps |
US7144349B2 (en) * | 2004-04-06 | 2006-12-05 | Pratt & Whitney Canada Corp. | Gas turbine gearbox |
GB0614302D0 (en) * | 2006-07-19 | 2006-08-30 | Rolls Royce Plc | An engine arrangement |
FR2905414B1 (fr) * | 2006-08-29 | 2013-03-01 | Snecma | Dispositif d'entrainement du rotor d'un equipement auxiliaire d'un turbomoteur. |
US8764397B1 (en) * | 2007-01-16 | 2014-07-01 | Michael Brian Wittig | Method and system for stall-tolerant rotor |
FR2928976A1 (fr) * | 2008-03-21 | 2009-09-25 | Snecma Sa | Systeme d'helices contrarotatives a helices entrainees par un train epicycloidal ameliore |
GB0821239D0 (en) * | 2008-11-21 | 2008-12-31 | Rolls Royce Plc | A machine such as a gas turbine |
FR2940247B1 (fr) * | 2008-12-19 | 2011-01-21 | Snecma | Systeme d'helices contrarotatives entrainees par un train epicycloidal offrant une repartition de couple equilibree entre les deux helices |
FR2945512B1 (fr) * | 2009-05-15 | 2012-08-24 | Snecma | Helice non carenee a pales a calage variable pour une turbomachine |
US8172530B2 (en) * | 2009-06-09 | 2012-05-08 | Hamilton Sundstrand Corporation | Pitch change actuation system for a counter-rotating propeller |
KR100962774B1 (ko) * | 2009-11-09 | 2010-06-10 | 강현문 | 풍력발전장치 |
GB201000198D0 (en) | 2010-01-08 | 2010-02-24 | Rolls Royce Plc | Back-up featherer |
US8336290B2 (en) * | 2010-09-30 | 2012-12-25 | General Electric Company | Pitch change apparatus for counter-rotating propellers |
US8371105B2 (en) * | 2010-09-30 | 2013-02-12 | General Electric Company | Hydraulic system for fan pitch change actuation of counter-rotating propellers |
GB201102987D0 (en) * | 2011-02-22 | 2011-04-06 | Rolls Royce Plc | A propfan engine |
MX2014000578A (es) | 2011-07-14 | 2014-04-30 | Pfizer | Tratamiento con anticuerpos anti-pcsk9. |
EP2798199B1 (en) * | 2011-12-30 | 2018-02-28 | Vestas Wind Systems A/S | A pitch system for a wind turbine |
WO2016020799A1 (en) | 2014-08-06 | 2016-02-11 | Rinat Neuroscience Corp. | Methods for reducing ldl-cholesterol |
WO2016020798A1 (en) | 2014-08-06 | 2016-02-11 | Rinat Neuroscience Corp. | Methods for reducing ldl-cholesterol |
FR3025246B1 (fr) * | 2014-08-29 | 2016-12-09 | Snecma | Roue aubagee a calages variables |
WO2016046684A1 (en) | 2014-09-23 | 2016-03-31 | Pfizer Inc. | Treatment with anti-pcsk9 antibodies |
PL226824B1 (pl) | 2015-09-07 | 2017-09-29 | Gen Electric | Układ isposób regulacji skoku smigła |
PL226825B1 (pl) | 2015-09-07 | 2017-09-29 | Gen Electric | Układ isposób regulacji skoku smigła |
FR3042009B1 (fr) * | 2015-10-05 | 2018-07-13 | Safran Aircraft Engines | Turbo moteur a soufflantes deportees avec un systeme differentiel |
US10414486B2 (en) | 2015-11-30 | 2019-09-17 | General Electric Company | Airfoil for a rotary machine including a propellor assembly |
CN111470052A (zh) * | 2020-05-31 | 2020-07-31 | 陈泽进 | 行星齿轮桨扇组合发动机装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2394299A (en) * | 1940-02-05 | 1946-02-05 | Friedrich Albert | Drive for oppositely rotating propellers |
US2804154A (en) * | 1952-02-19 | 1957-08-27 | Gen Motors Corp | Concurrent blade pitch control of coaxial propellers |
US2761517A (en) * | 1952-05-15 | 1956-09-04 | Gen Motors Corp | Control mechanism for propellers of the contrarotation type |
US2876848A (en) * | 1954-01-15 | 1959-03-10 | Gen Motors Corp | Propeller mechanism |
US3900274A (en) * | 1974-06-25 | 1975-08-19 | Gen Electric | Remote controlled actuation system for the rotor of a gas turbine engine |
GB2145777B (en) * | 1983-08-29 | 1987-07-22 | Gen Electric | Aircraft propeller system |
US4563129A (en) * | 1983-12-08 | 1986-01-07 | United Technologies Corporation | Integrated reduction gear and counterrotation propeller |
US4591313A (en) * | 1983-12-30 | 1986-05-27 | The Boeing Company | Propeller pitch control system and apparatus |
GB2173863B (en) * | 1985-04-17 | 1989-07-19 | Rolls Royce Plc | A propeller module for an aero gas turbine engine |
GB2182397B (en) * | 1985-11-02 | 1989-10-04 | Rolls Royce Plc | Propeller module for an aero gas turbine engine |
GB2186918B (en) * | 1986-02-25 | 1989-11-15 | Rolls Royce | Propeller module for an aero gas turbine engine |
US4753572A (en) * | 1986-10-02 | 1988-06-28 | United Technologies Corporation | Propeller pitch change actuation system |
US4750862A (en) * | 1986-11-28 | 1988-06-14 | United Technologies Corporation | Modular propeller blade pitch actuation system |
-
1988
- 1988-10-18 US US07/259,369 patent/US4936746A/en not_active Expired - Fee Related
-
1989
- 1989-10-17 EP EP19890119295 patent/EP0363997A3/en not_active Ceased
- 1989-10-17 BR BR898905274A patent/BR8905274A/pt unknown
- 1989-10-18 JP JP1271427A patent/JPH02155894A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
EP0363997A2 (en) | 1990-04-18 |
JPH02155894A (ja) | 1990-06-14 |
US4936746A (en) | 1990-06-26 |
EP0363997A3 (en) | 1991-01-30 |
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