[특허]Supersonic airplane with subsonic boost engine means and method of operating the same

Supersonic airplane with subsonic boost engine means and method of operating the same 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B64D-027/00
출원번호	US-0377646 (1995-01-25)
발명자 / 주소	Rudolph Peter K. C. (Seattle WA)
출원인 / 주소	The Boeing Company (Seattle WA 02)
인용정보	피인용 횟수 : 40 인용 특허 : 0

초록 ▼

A supersonic airplane having four or two supersonic engines and one or more boost engines. During take-off and initial climb the supersonic engines are operated at a lower thrust setting within acceptable noise limits, and the subsonic engine(s) is operated to provide boost thrust to enable the airplane to operate a take-off and climb. During cruise, the subsonic engines are in a nonoperating mode, and the supersonic engines alone provide the thrust for supersonic operation. In one embodiment, one subsonic engine is deployed on one side of the fuselage during the operating mode. In a second embodiment, there are two subsonic engines deployed on opposite sides of the fuselage. In another embodiment, a single subsonic engine is installed inside the fuselage.

대표청구항 ▼

A supersonic airplane designed to be able to fly at supersonic speed and develop adequate thrust for supersonic flight, and yet be able to develop adequate takeoff and climb thrust to enable the airplane to take off and climb and to operate during takeoff and climb at a noise level no greater than a predetermined noise level, said airplane comprising: a. an aircraft structure capable of operating at supersonic cruise; b. supersonic engine means mounted to said aircraft structure and characterized in that said supersonic engine means is capable of generating said thrust for supersonic cruise so as to maintain supersonic cruise; c. said supersonic engine means being characterized in that with said supersonic engine means operating to develop said takeoff and climb thrust, said supersonic engine means operates at a noise level greater than said predetermined noise level, said supersonic engine means being capable of operating at a relatively lesser power setting at a noise level no greater than said predetermined noise level, with said supersonic engine means at said lesser power setting developing a lower thrust that is below said takeoff and climb thrust; d. subsonic engine means having a first nonoperating mode and a second operating mode where said subsonic engine means is capable of providing a boost thrust during takeoff and climb that is at least equal to the difference between the takeoff and climb thrust and the lower thrust developed by the supersonic engine means when operating at a noise level no greater than said predetermined noise level; e. said supersonic engine means and said subsonic engine means being characterized in that during takeoff and climb, with said supersonic engine means operating at said lesser power setting, and with said subsonic engine means in said second operating mode, total noise level developed by said supersonic engine means and said subsonic engine means during takeoff and climb is no greater than said predetermined noise level; whereby said airplane is capable of operating through takeoff and climb and yet be within said predetermined noise level by operating said supersonic engine means at said lower thrust, and operating said subsonic engine means to develop said boost thrust, and said airplane is capable of supersonic operation by having said subsonic engine means in the nonoperating mode and operating the supersonic engine means to develop said adequate thrust for supersonic flight.

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