An APU air intake having a foldable intake door, including a frame with airfoil profiles. The frame is turned to an aperture angle (α) with respect to the frame support, and each airfoil profile is turned to a profile angle (βi) with respect to the frame. The aperture angle (α) varies from 0° to 22°
An APU air intake having a foldable intake door, including a frame with airfoil profiles. The frame is turned to an aperture angle (α) with respect to the frame support, and each airfoil profile is turned to a profile angle (βi) with respect to the frame. The aperture angle (α) varies from 0° to 22°, and the profile angles (βi) vary from 0° to 110°. The frame is moved by an actuator and the airfoil profiles are operated by extendable rods and secondary rods each secondary rod having rod supports. A latching mechanism is assembled onto each extendable rod, including a rare earth magnet and either a magnet contact plate or a plate with another magnet.
대표청구항▼
1. An auxiliary power unit comprising: an air intake foldable double door comprising: a frame;a frame support;two airfoil profiles that consist of a front airfoil profile and a rear airfoil profile;wherein the frame forms an aperture angle (α) with respect to the frame support,wherein the aperture a
1. An auxiliary power unit comprising: an air intake foldable double door comprising: a frame;a frame support;two airfoil profiles that consist of a front airfoil profile and a rear airfoil profile;wherein the frame forms an aperture angle (α) with respect to the frame support,wherein the aperture angle (α) is within a range of 0° to 22°,wherein the front airfoil profile forms a front profile angle (β1) with respect to the frame,wherein the front profile angle is within a range of 0° to 80°,wherein the rear airfoil profile forms a rear profile angle (β2) with respect to the frame, wherein the rear profile angle is within a range of 0° to 110°,wherein the frame is movable by an actuator, and the front airfoil profile and the rear airfoil profile are operable by extendable rods and fixed length rods, each fixed length rod having supports,wherein: the actuator having actuator supports, said actuator comprising a first base element and a second element, the second element being telescopically movable within the first base element;each extendable rod having an extendable rod support and an extendable rod head, said each extendable rod comprising a first rod-shaped element and a second rod-shaped element, the second rod-shaped element being telescopically movable within the first rod-shaped element;wherein a latching mechanism is assembled onto each extendable rod, and wherein the latching mechanism comprises: a rare earth magnet;a magnet contact plate;a spring;a spring retainer;a plate,where the rare earth magnet is assembled onto the first rod-shaped element of the extendable rod; and the magnet contact plate, the spring, the spring retainer and the plate are assembled onto the second rod-shaped element of the extendable rod,wherein the air intake foldable double door is mounted in fluid communication with the auxiliary power unit for controlling an amount of air entering the auxiliary power unit. 2. An auxiliary power unit according to claim 1, wherein the two airfoil profiles have a rectangular planform shape, where the two airfoil profiles are fitted into the frame. 3. An auxiliary power unit according to claim 1, the actuator comprising a two-position actuator having a retracted position and an extended position, and being suitable for establishing a selected one of three operational modes including: 1) a first mode with the air intake foldable double door closed, where the actuator is in the retracted position, the frame is closed, and the two airfoil profiles are closed relative to the frame;2) a second mode with the air intake foldable double door open, where the actuator is in the extended position, the frame is open, and the two airfoil profiles are open relative to the frame;3) a third mode with the air intake foldable double door open, where the actuator is in the extended position, the frame is open, the two airfoil profiles are closed relative to the frame.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (11)
Kastell, Dirk; Roering, Sebastian; Noriega, Wilson Willy Casas, Air duct for supplying ambient air in an aircraft.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.