Patent ID: 11874196
Assignee: PRATT & WHITNEY CANADA CORP.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 4:
5. A portable attitude test stand (PATS) system for an aircraft engine, comprising:
a support frame mountable on a trailer of a road vehicle;
a test cell supported by the support frame and sized to receive the aircraft engine, the test cell operable to rotate the aircraft engine about a pitch axis and a roll axis of the aircraft engine, the test cell including a pitch frame and a roll cage rotatably received within the pitch frame, the roll cage sized to receive the aircraft engine;
an actuator operatively connected to the test cell and to the support frame, the actuator operable to lower and raise the test cell relative to the support frame between a transport configuration in which the test cell has a transport height and a test configuration in which the test cell has a test height, the test height being greater than the transport height;
a rotational resistance secured to the test cell, the rotational resistance drivingly engageable by the aircraft engine to simulate a rotatable load on the aircraft engine; and
a cable management system having:
a first annular wall secured to the roll cage and extending around the roll axis,
a second annular wall secured to the pitch frame and extending around the first annular wall, and
cables having first ends secured to the first annular wall and second ends secured to the second annular wall, the cables located between the first and second annular walls, lengths of the cables selected to allow rotation of the first annular wall relative to the second annular wall about the roll axis.