Horizontally flying aircraft e.g. transport plane, safety ensuring method, involves partially retracting wing flaps when traction force of motors carried by fixed wing is equal to predetermined high value

摘要

#CMT# #/CMT# The method involves partially retracting wing flaps (5) when a traction force (T) of motors (3) carried by wings (2) is equal to a predetermined high value defined as take-off-go around. The predetermined high value corresponds to a threshold lower than the traction force of the motors necessary to the take-off of an aircraft. The retraction of the flaps is subjected to an additional condition that a deflection instruction greater than another predetermined threshold is provided to an elevator (10) of a horizontal tail section (8). #CMT# : #/CMT# An independent claim is also included for an aircraft including a fixed wing and a horizontal tail section. #CMT#USE : #/CMT# Used for ensuring the safety of an aircraft e.g. transport plane, flying horizontally at low speed (claimed). #CMT#ADVANTAGE : #/CMT# The wing flaps are partially retracted when the traction force of the motors is equal to the predetermined high value, thus reducing the blowing effect of the wing flaps by a propeller and reducing the pitch-down moment. The method therefore avoids damage to the aircraft, and ensures that the local incidence on the adjustable horizontal tail section is negative and the functioning of the tail section is made effective at the moment where the resource is controlled. The method is implemented when the altitude of the aircraft is greater than or equal to 30 meters in order to avoid untimely activation closer to ground. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a side view of a horizontally flying aircraft with low speed. T : Traction force 1 : Transport plane 2 : Wings 3 : Motors 4 : Propeller 5 : Wing flaps 7 : Vertical tail section 8 : Horizontal tail section 10 : Elevator.