PFIS Assembly: Dolly
19 April 2004:
Left: The lifting feet have been added. These bring the dolly up off of its
rollers for stability during testing.
Right: The new crane (not at its full
13 February 2004
We have completed the assembly of the dolly. It went together fairly easily,
except for the maneuvering of the pieces with the crane. To the left is
Tommy Nelson and Mike with the assembled dolly. At right is a closeup of the
tilting bearing and one of the bolts connecting the triangle to the ring.
For now, we have it stabilized in its horizontal position with a simple
piece of channel bolted to the dolly structure (left). At right is a closeup
of one of the pads to which the PFIS structure will be bolted. These were
machined to high tolerance to provide a flat plane.
10 February 2004
The first step in the assembly of PFIS is the construction of the dolly. PFIS
will be mounted to the dolly for the rest of the assembly, alignment and
testing. The dolly is constructed from three main pieces: a ring, to
which the PFIS structure is bolted; a triangle, which the ring bolts to; and
a square, which is the base of the dolly at floor level. The dolly will allow
us to tilt PFIS at +/-37 degrees from horizontal, so that we can test the
various mechanisms at these angles as well as attempt to get a measurement
of the flexure.
Below are some pictures of us bringing the dolly pieces into Space Astronomy
Laboratory. There were some clearance issues down in the Physics loading
dock, and we had to lift the ring to a vertical position to get it into the
freight elevator, but with Scott's help we managed to get it in.
Getting it out of the loading area:
The triangle and square pieces managed to fit in the freight elevator while
still on the pallet.
Lifting the ring and getting it into the freight elevator: