Free Gyroscope Experiments of Two Immiscible Liquids in a Partially Filled Cylinder
Abstract
Gyroscope experiments have been conducted to measure the yaw growth rate in a cylinder filled with two immiscible liquids (silicone oil and water). The experimental data were obtained by measuring the yaw history was processed to obtain the yaw growth rate induced by the liquid. Yaw histories were obtained for a 90% filled cylinder (height - 25.78 cm and diameter = 8.24 cm) spinning at 50 rev/sec. The aspect ratio (height/diameter) of the cylinder was 3.126. The composition of the liquid payload was changed by varying the oil to water ratios - ratios of 100/0, 85/15, 75/25, 30/70, 15/85, and 0/100 were tested. The experimental data were found to be consistent with a recent theory by Murphy. However, a small, but consistent, bias was observed between the measured and predicted values of yaw frequency at the maximum growth rate; the experimental values were slightly larger.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1985
- Accession Number
- ADA164937
Entities
People
- Lyle D. Kayser
- William I. Brannan
- William P. D'amico Jr.
Organizations
- Ballistic Research Laboratory