Low noise lead screw positioner
Abstract
A very precise and low noise lead screw positioner, for positioning a retroreflector in an interferometer is described. A gas source supplies inert pressurized gas, that flows through narrow holes into the clearance space between a nut and the lead screw. The pressurized gas keeps the nut out of contact with the screw. The gas flows axially along the clearance space, into the environment. The small amount of inert gas flowing into the environment minimizes pollution. By allowing such flow into the environment, no seals are required between the end of the nut and the screw.
- Publication:
-
National Aeronautics and Space Administration Report
- Pub Date:
- May 1986
- Bibcode:
- 1986nasa.reptR....P
- Keywords:
-
- Gas Flow;
- Interferometers;
- Positioning;
- Rare Gases;
- Retroreflectors;
- Screws;
- Axial Flow;
- Gas Injection;
- Interfaces;
- Patents;
- Instrumentation and Photography