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

Claim 14:
15. 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, 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, the test cell operable to rotate the aircraft engine about a pitch axis and a roll axis of the aircraft engine;
two shaft members secured to the pitch frame and protruding away therefrom, each of the two shaft members rollingly engaged to a respective one of two carriages; and
a first motor secured to one of the two carriages and in driving engagement with one of the two shaft members for rotating the pitch frame about the pitch axis;

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; and
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.