Power plant, a helicopter including such a power plant, and a method implemented by said power plant
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B64C-027/82
B64D-025/00
B64D-035/04
B64D-035/08
B64D-041/00
출원번호
US-0951206
(2010-11-22)
등록번호
US-8464980
(2013-06-18)
우선권정보
FR-09 05678 (2009-11-26)
발명자
/ 주소
Certain, Bernard
출원인 / 주소
Eurocopter
대리인 / 주소
Brooks Kushman P.C.
인용정보
피인용 횟수 :
11인용 특허 :
1
초록▼
The present invention relates to a power plant (10) having a single engine (13) together with both a main gearbox (MGB) suitable for driving the rotary wing (3) of a helicopter (1) and a tail gearbox (TGB) suitable for driving an anti-torque rotor (4) of a helicopter (1). The power plant (10) also i
The present invention relates to a power plant (10) having a single engine (13) together with both a main gearbox (MGB) suitable for driving the rotary wing (3) of a helicopter (1) and a tail gearbox (TGB) suitable for driving an anti-torque rotor (4) of a helicopter (1). The power plant (10) also includes a first electric motor (11) mechanically connected to said main gearbox (MGB) in order to be capable of driving said main gearbox (MGB), and a second electric motor (12) mechanically connected to said tail gearbox (TGB) in order to be capable of driving said tail gearbox (TGB).
대표청구항▼
1. A power plant having a single engine together with a main gearbox (MGB) suitable for driving the rotary wing of a helicopter, and a tail gearbox (TGB) suitable for driving an anti-torque rotor of a helicopter, wherein the power plant includes a first electric motor mechanically connected to said
1. A power plant having a single engine together with a main gearbox (MGB) suitable for driving the rotary wing of a helicopter, and a tail gearbox (TGB) suitable for driving an anti-torque rotor of a helicopter, wherein the power plant includes a first electric motor mechanically connected to said main gearbox (MGB) in order to be capable of driving said main gearbox (MGB) and a second electric motor mechanically connected to said tail gearbox (TGB) in order to be capable of driving said tail gearbox (TGB). 2. A power plant according to claim 1, wherein said engine is connected to said main gearbox (MGB) by a first shaft, said tail gearbox (TGB) being connected via a second shaft to said engine or to said main gearbox (MGB). 3. A power plant according to claim 1, wherein said power plant is suitable for being arranged on a helicopter having a rotary wing with a given nominal speed of rotation, said main gearbox (MGB) has a given first torque limit, said first electric motor has a first maximum electric power equal to a first percentage of a first product of said nominal speed of rotation multiplied by said first torque limit, with said first percentage lying in the range 20% to 40% of said first product. 4. A power plant according to claim 1, wherein said main gearbox (MGB) is driven by a first shaft (21) and said first electric motor is arranged on said first shaft. 5. A power plant according to claim 1, wherein said main gearbox (MGB) is driven by a first shaft, and said first electric motor is arranged on a main intermediate shaft distinct from said first shaft. 6. A power plant according to claim 1, wherein said power plant is suitable for being arranged on a helicopter provided with a rotary wing having a given nominal speed of rotation, said main gearbox (MGB) has a given first torque limit, said second electric motor has a second maximum electric power equal to a second percentage of a first product of said nominal speed of rotation multiplied by said first torque limit and said second percentage lies in the range 5% to 10% of said first product. 7. A power plant according to claim 1, wherein said tail gearbox (TGB) is driven by a second shaft, and said second electric motor is arranged on said second shaft. 8. A power plant according to claim 1, wherein said tail gearbox (TGB) is driven by a second shaft, and said second electric motor is arranged on a tail intermediate shaft distinct from said second shaft. 9. A power plant according to claim 1, including a regulator member provided with a regulator processor controlling the first electric motor and the second electric motor, said regulator member being electrically connected: to the first electric motor and to the second electric motor; andto at least one main battery dedicated to electrically powering the first electric motor and the second electric motor. 10. A power plant according to claim 9, wherein said regulator member is electrically connected to at least one secondary battery suitable for powering the electrical power network (5) of a helicopter. 11. A power plant according to claim 1, wherein said first and second electric motors are suitable for operating in motor mode or in electricity generator mode, and said power plant includes display means that display for said first electric motor and said second electric motor: an indication as to whether it is operating in motor mode or in generator mode, at least one regulator member indicating the mode of operation to a display processor of said display means; anda level of remaining charge in at least one main battery of the first and second electric motors, first measurement means measuring the remaining charge level and transmitting said remaining charge level to a display processor of said display means. 12. A power plant according to claim 11, wherein said display means presents at least the following information: a remaining operating time for at least one of said first and second electric motors, at least second measurement means measuring said remaining operating time and transmitting said remaining operating time to a display processor of said display means; anda temperature of a main battery electrically connected to the first electric motor and to the second electric motor, at least third measurement means measuring said temperature and transmitting said temperature to a display processor of said display means. 13. A power plant according to claim 1, including warning means provided with a warning processor generating a warning when at least one of the following situations occurs: with at least first measurement means measuring the remaining charge level of at least one main battery of each electric motor, the warning means trigger a warning when the remaining charge level drops below a predetermined threshold charge level;with at least second measurement means measuring a remaining operating time for at least said first and second electric motors, the warning means trigger a warning when said operating time drops below a predetermined threshold time; andwith at least third measurement means measuring a temperature of a main battery electrically connected to the first electric motor and to the second electric motor, the warning means trigger a warning when said temperature exceeds a predetermined threshold temperature. 14. A power plant according to claim 1, wherein said first and second electric motors are connected to at least one main electric battery, and said power plant includes means for taking said main battery out of circuit. 15. A helicopter provided both with a rotary wing and with an anti-torque rotor, and also with a power plant, said power plant being provided with a single engine and a main gearbox (MGB) driving said rotary wing and a tail gearbox (TGB) driving said anti-torque rotor, wherein said power plant is according to claim 1, including a first electric motor mechanically connected to said main gearbox (MGB) so as to be capable of driving said main gearbox (MGB), and a second electric motor mechanically connected to said tail gearbox (TGB) so as to be capable of said driving said tail gearbox (TGB). 16. A method of driving a rotary wing and an anti-torque rotor of a helicopter, said helicopter having a power plant provided with a single engine and with a main gearbox (MGB) driving said rotary wing and with a tail gearbox (TGB) driving said anti-torque rotor, said power plant including a first electric motor mechanically connected to said main gearbox (MGB) so as to be capable of driving said main gearbox (MGB), and a second electric motor mechanically connected to said tail gearbox (TGB) so as to be capable of driving said tail gearbox (TGB), in which method at least one of the following actions is performed: in a normal mode of operation, the main gearbox (MGB) and the tail gearbox (TGB) are driven using the sole engine;in a first emergency mode, in the event of overspeed of the engine, the first electric motor is caused to operate in electricity generator mode and the second electric motor is caused to operate in electricity generator mode to slow down said engine during a first predetermined duration, and then if the engine is still in overspeed at the end of said first duration, the engine is stopped and the first electric motor is caused to operate in electric motor mode in order to drive said main gearbox (MGB), and said second electric motor is caused to operate in electric motor mode in order to drive said tail gearbox (TGB);in a second emergency mode, said engine is no longer capable of driving said main gearbox (MGB) at a given first speed, and the first electric motor is caused to operate in electric motor mode in order at least to contribute to driving said main gearbox (MGB);in a third emergency mode, said engine is no longer capable of driving said tail gearbox (TGB) at a given second speed, and said second electric motor is caused to operate in electric motor mode in order at least to contribute to driving said tail gearbox (TGB); andin a fourth emergency mode, said engine is no longer capable of driving said main gearbox (MGB) at a given first speed and is no longer capable of driving said tail gearbox (TGB) at a given second speed, and the first electric motor is caused to operate in electric motor mode in order at least to contribute to driving the main gearbox (MGB), and the second electric motor is caused to operate in electric motor mode in order at least to contribute to driving said tail gearbox (TGB).
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