Vibration Characteristics of Stirling Cycle Cryocoolers for Space Application
Vibration generated by small Stirling-cycle cryocoolers is an important concern for spacecraft designers planning to incorporate these cryocoolers into near-term space-science instruments. Under joint Air Force/Ballistic Missile Defense Organization (BMDO) and NASA Eos/AIRS Instrument sponsorship, JPL has an extensive ongoing cryocooler characterization program addressed to measuring the important cryocooler performance characteristics such as self-generated vibration; these measurements provide the interface and trend data needed by instrument designers as well as valuable feedback for improving cryocooler performance.
Self-generated vibration has been measured at JPL for a wide variety of Stirling cryocoolers, from early engineering development model coolers to flight coolers. These data, when viewed as a whole, provide insight into a variety of generic cryocooler vibration trends. Data are presented which characterize the sensitivity of cryocooler vibration to operational parameters such as stroke and drive frequency, to different harmonic cancellation approaches, and to the influence of the stiffness of the cooler structural mount. The data are presented for all three translational axes as well as for the moment about the drive axis.
KeywordsVibration Control Vibration Spectrum Vibration Suppression Drive Frequency Compressor Stroke
Unable to display preview. Download preview PDF.
- 1.Ross, R.G., Jr., Johnson, D.L. and Sugimura, R.S., “Characterization of Miniature Stirling-cycle Cryocoolers for Space Application,” 6th International Crvocooler Conference Proceedings, Plymouth, MA, October 25–26, 1990, DTRC-91/002, David Taylor Research Center (1991), pp. 27-38.Google Scholar
- 2.Johnson, D.L., Mon, G.R., and Ross, R.G., Jr., “Spacecraft Cooler Characterization”, 7th International Crvocooler Conference Proceedings, Air Force Phillips Laboratory Report PL-CP—93-1001, Kirtland Air Force Base, NM, April 1993, pp. 73-83.Google Scholar
- 3.Ross, R.G., Jr., Johnson, D.L. and Kotsubo, V., “Vibration Characterization and Control of Miniature Stirling-cycle Cryocoolers for Space Application,” Adv. Cryo. Engin.,” Vol. 37B (1991), pp. 1019–1027.Google Scholar
- 4.B.G. Johnson, F.J. Flynn, M.S. Gaffney, D.L. Johnson, R.G. Ross, Jr., “Demonstration of Active Vibration Control on a Stirling-cycle Cryocooler Testbed”, Proceedings of the American Control Conference, Chicago IL, June 24–26, 1992.Google Scholar
- 5.Johnson, B.G., et al., “Demonstration of Active Vibration Reduction on a Stirling-cycle Cryocooler Testbed”, 7th International Crvocooler Conference Proceedings, Air Force Phillips Laboratory Report PL-CP—93-1001, Kirtland Air Force Base, NM, April 1993, pp. 820-828.Google Scholar