Helicopter control stick support assembly
A support assembly for a helicopter control stick is provided. The support assembly includes a supporting structure and an instrument panel fixed to each other; and a connecting assembly for connecting the stick to the supporting structure. The connecting assembly includes an arm elongated in a longitudinal direction and having one end supporting the stick; a guide for connecting the arm in longitudinally sliding manner to the supporting structure, to move the end to and from the supporting structure; and a rotary assembly for connecting the arm to the supporting structure in rotary manner about a horizontal axis, to adjust the height of the end. The rotary assembly has a first releasable retainer, wherein the first releasable retainer operates to lock rotation of the arm with respect to the supporting structure in a desired angular position.
1. A support assembly for a helicopter control stick, the support assembly comprising a supporting structure and an instrument panel fixed to each other; and a connecting assembly for connecting said stick to said supporting structure; said connecting assembly comprising:
an arm elongated in a longitudinal direction and having one end supporting said stick;
a guide for connecting said arm in longitudinally sliding manner to said supporting structure, to move said end to and from said supporting structure; and
a rotary assembly for connecting said arm to said supporting structure in rotary manner about a horizontal axis, to adjust the height of said end, said rotary assembly having a first releasable retainer, wherein said first releasable retainer operates to lock rotation of said arm with respect to said supporting structure in a desired angular position;
wherein said arm is longitudinally slidable when said first releasable retainer is operated to lock rotation of said arm;
wherein said horizontal axis extends transversely between the longitudinal ends of said arm.
2. The support assembly of claim 1 , wherein said supporting structure comprises a stop defining the maximum rotation angle of said arm.
3. The support assembly of claim 1 , further comprising a second releasable retainer comprising a gripper which acts on a friction coupling to prevent translation of said arm.
4. The support assembly of claim 1 , wherein said guide comprises an intermediate member fitted in longitudinally-sliding manner to said arm; said rotary assembly defining a hinge between said intermediate member and said supporting structure.
5. The support assembly of claim 4 , wherein said arm is hollow and at least partly houses said intermediate member.
6. The support assembly of claim 5 , wherein said rotary assembly comprises at least one horizontal hinge pin which engages in sliding manner a longitudinal slot in said arm.
7. The support assembly of claim 6 , wherein said guide comprises a horizontal guide pin parallel to and spaced longitudinally apart from said hinge pin, and which engages said longitudinal slot in sliding manner.