Abstract:
PROBLEM TO BE SOLVED: To prevent an attitude of an airframe from becoming unstable due to too great operation amount for a control stick, even when a flight control system of the airframe is a PAFCS system.SOLUTION: An aircraft includes: a target attitude control command computing part 42 which computes a target attitude control command on the basis of control input of the control stick; a gain value generation part 44 which generates a gain value of one or less, becoming lower as the control input of the control stick becomes larger; a multiplication part 52 which multiplies the target attitude control command by the gain value; and an adding part 48 which adds a rate-damping control command to the target attitude control command multiplied by the gain value and which performs output to a subtraction part for computing an SAS command. In addition, the aircraft also includes a subtraction part 54 which generates a correction signal for correcting an angle of a neutral position of the control stick in accordance with the target attitude control command reduced by being multiplied by the gain value and which performs output to an adjusting mechanism for adjusting the angle of the neutral position of the control stick.
Abstract:
PROBLEM TO BE SOLVED: To provide an aircraft configured to prevent collision between the aircraft and an obstacle caused by operator misjudgment and/or a communication failure between an operator and a pilot, with a simple and inexpensive method.SOLUTION: An aircraft (1) capable of hovering includes at least one sensor (10, 10', and 10") and a control unit (20). The sensor (10, 10', and 10") has a planar sweep region (R) and is configured to obtain distances (C) between first points (P) on an obstacle (O) located in the planar sweep region (R) and a second point (Q) on the aircraft (1) when the aircraft (1) is maneuvered. The control unit (20) is configured to generate a warning signal when at least one of the first points (P) lies in a safe zone (Z) including the second point (Q) on the aircraft (1).
Abstract:
PROBLEM TO BE SOLVED: To provide a means for preventing uncontrolled flight or tip-over of an unmanned aerial vehicle (UAV) during take-off. SOLUTION: The UAV includes: a step 302 for receiving a measurement representative of a posture of the UAV from the magnetometer, wherein the measurement is of only one axis of the three-axis magnetometer; a step 304 fpr comparing the measurement to an allowable range of posture; a step 306 for determining that the measurement is not within the allowable range of posture; and a step 308 for performing at least one corrective action for the UAV. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an unmanned air vehicle capable of performing vertical takeoff from and landing on inclined surfaces. SOLUTION: Takeoff and landing modes are added to a flight control system of a Vertical Take-Off and Landing (VTOL) Unmanned Air Vehicle (UAV). The takeoff and landing modes use data available to the flight control system and the VTOL UAV's existing control surfaces and throttle control. As a result, the VTOL UAV can takeoff from and land on inclined surfaces without the use of landing gear mechanisms designed to level the UAV on the inclined surfaces. COPYRIGHT: (C)2009,JPO&INPIT