Aircraft wheel and brake assembly
An aircraft wheel and brake assembly includes a wheel, a brake configured to brake the wheel, and a measurement device configured to measure the speed of rotation of the wheel. The brake includes at least one friction member, an actuator support, and at least one brake actuator carried by the actuator support and configured to exert a braking force selectively on the friction member. The measurement device includes a target and a sensing component for producing a measurement signal representative of the speed of rotation of the target. The aircraft wheel and brake assembly is configured in such a manner that, when assembled, the target is constrained to rotate with the wheel and the sensing component is mounted on the actuator support. The target and the sensing component is configured in such a manner that the sensing component detects rotation of the target.
1. An aircraft wheel and brake assembly, comprising:
a wheel mounted to rotate around a rotation axis;
a brake configured to brake the wheel, the brake comprising a friction member, an actuator support, and at least one brake actuator carried by the actuator support and configured to exert a braking force selectively on the friction member; and
a measurement device configured to measure a speed of rotation of the wheel and comprising a target and a sensing component configured for producing a measurement signal representative of a speed of rotation of the target,
wherein the aircraft wheel and brake assembly are configured such that, when the aircraft wheel and brake assembly is assembled, the target is constrained to rotate with the wheel and the sensing component is directly mounted on the actuator support, the target and the sensing component being configured such that the sensing component detects rotation of the target, the brake actuator extending between the rotation axis of the wheel and the sensing component when looking in a direction perpendicular to said axis of rotation.
2. The aircraft wheel and brake assembly according to claim 1 , wherein the target is mounted on a rim of the wheel and is positioned, along an axis of rotation (X) of the wheel, between the actuator support and the wheel.
3. The aircraft wheel and brake assembly according to claim 1 , wherein the brake actuator is positioned, along a first radial direction (Y 1 ) perpendicular to an axis of rotation (X) of the wheel, between the sensing component and the axis of rotation (X) of the wheel.
4. The aircraft wheel and brake assembly according to claim 1 , wherein the sensing component and the target extend in succession along an axial direction (X 1 ) parallel to an axis of rotation (X) of the wheel.
5. The aircraft wheel and brake assembly according to claim 1 , wherein the sensing component and the target extend in succession along a second radial direction (Y 2 ) perpendicular to an axis of rotation (X) of the wheel.
6. The aircraft wheel and brake assembly according to claim 1 , wherein the target is a toothed wheel having axial teeth.
7. The aircraft wheel and brake assembly according claim 1 , wherein the target is a toothed wheel having radial teeth.
8. The aircraft wheel and brake assembly according to claim 6 , wherein the target comprises a plurality of rows of teeth.
9. The aircraft wheel and brake assembly according to claim 6 , wherein the target includes a reference tooth comprising an extra thickness such that the measurement signal presents a particular shape when the sensing component detects the reference tooth.
10. The aircraft wheel and brake assembly according to claim 1 , wherein the sensing component is a first sensing component, the aircraft wheel and brake assembly further comprising a second sensing component offset from the first sensing component by one-half of a period of a pattern of the target.
11. The aircraft wheel and brake assembly according to claim 1 , wherein the sensing component is a first sensing component, the aircraft wheel and brake assembly further comprising a second sensing component, wherein the first sensing component and the second sensing component are offset modulo an odd number of fourths of a period of a pattern of the target.
12. The aircraft wheel and brake assembly according to claim 1 , wherein the sensing component is a magnetic sensor.
13. The aircraft wheel and brake assembly according to claim 1 , wherein the sensing component is an optical sensor.
14. The aircraft wheel and brake assembly according to claim 1 , wherein the sensing component is an ultrasound sensor.
15. An aircraft undercarriage including an aircraft wheel and brake assembly according to claim 1 .
16. An aircraft including an aircraft undercarriage according to claim 15 .