Gas turbine engine stand
A gas turbine engine stand comprising an engine frame and a base frame. The base frame has a slide rail to enable axial translation of the engine frame relative to the base frame. A load transfer arrangement engages with a part of the engine frame and slidingly engages with the slide rail. There is a locking mechanism to lock the engine frame to the base frame to prevent relative axial translation. The gas turbine engine stand is used, inter alia, for splitting a core engine from a fan case.
1. A gas turbine engine stand configured for supporting a core engine comprising:
an engine frame supporting the core engine;
a base frame having a slide rail to enable axial translation of the engine frame relative to the base frame;
a load transfer arrangement comprising a first engagement feature to engage with a part of the engine frame and a second engagement feature to slidingly engage with the slide rail;
a locking mechanism to lock the engine frame to the base frame to prevent relative axial translation,
wherein one of the locking mechanism and the load transfer arrangement is selected and engaged as a load path between the engine frame and the base frame.
2. The gas turbine engine stand as claimed in claim 1 wherein the engine frame is configured to support a gas turbine engine.
3. The gas turbine engine stand as claimed in claim 1 further comprising an intermediate frame that is fixed in axial alignment with the engine frame and is engaged by the first engagement feature of the load transfer arrangement.
4. The gas turbine engine stand as claimed in claim 3 wherein the intermediate frame comprises at least one load transfer flange to engage with the first engagement feature.
5. The gas turbine engine stand as claimed in claim 4 wherein the load transfer flange is engaged by extension of the load transfer arrangement.
6. The gas turbine engine stand as claimed in claim 5 wherein a jack has at least two defined vertical positions.
7. The gas turbine engine stand as claimed in claim 6 wherein one of the defined vertical positions corresponds to the locking mechanism being engaged and one of the defined vertical positions corresponds to the load transfer arrangement being engaged.
8. The gas turbine engine stand as claimed in claim 3 further comprising a height adjustment arrangement to enable vertical translation of the engine frame relative to the intermediate frame.
9. The gas turbine engine stand as claimed in claim 8 wherein the height adjustment arrangement has at least two defined vertical positions including an engine split position and a transportation position.
10. The gas turbine engine stand as claimed in claim 1 wherein the engine frame comprises at least one load transfer flange to engage with the first engagement feature.
11. The gas turbine engine stand as claimed in claim 10 wherein the load transfer flange is engaged by extension of the load transfer arrangement.
12. The gas turbine engine stand as claimed in claim 1 wherein the load transfer arrangement includes a jack to vertically translate the engine frame relative to the base frame.
13. The gas turbine engine stand as claimed in claim 1 wherein the base frame has two slide rails that are parallel to each other.
14. The gas turbine engine stand as claimed in claim 1 further comprising two load transfer arrangements.
15. The gas turbine engine stand as claimed in claim 1 further comprising an axial drive mechanism to effect the axial translation of the engine frame relative to the base frame.
16. The gas turbine engine stand as claimed in claim 1 wherein the base frame further comprises alignment features to engage with corresponding features on a gas turbine engine fan stand.
17. The gas turbine engine stand assembly comprising:
a gas turbine engine fan stand having a base frame and a fan case frame; and
a gas turbine engine stand as claimed in claim 1 .