Persistent Link:
http://hdl.handle.net/10150/615549
Title:
PNEU-SCAN - A NOVEL, LIGHTWEIGHT TWO-AXIS TELEMETRY TRACKING SYSTEM
Author:
Sullivan, Arthur
Affiliation:
Electro Magnetic Processes, Inc.
Issue Date:
1985-10
Rights:
Copyright © International Foundation for Telemetering
Collection Information:
Proceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection.
Publisher:
International Foundation for Telemetering
Journal:
International Telemetering Conference Proceedings
Abstract:
Over a decade ago the author developed a unique conically scanning tracking antenna feed (RADSCAN) with only one moving part and extremely high reliability. While the system had many advantages over single-channel monopulse (SCM), there were two disadvantages: one was weight due to the drive motor; the other was the fact that the scan speed was constant. EMP is just completing the development of a conscan tracking feed which is pneumatically driven (Pneu-Scan) - thus eliminating the heavy electric drive motor. Since most telemetry tracking antennas require a dehydrator/pressurizer for environmental reasons, no additional drive power is required to scan the feed since the pressurized air from the dehydrator system is used to drive the feed. In addition, the scan speed is proportional to the continuously varying pressure. If increased reliability is required, then redundant dehydrators can be used. The feed system has only one moving part constructed from graphite fiber that weighs less than an ounce. The feed is driven by a small lightweight impeller. An S-band tracking feed of this design is less than five inches in diameter - as compared to 12 inches for an SCM feed. It is also considerably lighter than an SCM feed. Decreased aperture blocking - by more than a factor of two enhances sidelobe levels and maximizes gain. The new feed illuminates a lightweight 5-foot diameter graphite-epoxy constructed paraboloidal reflector positioned by an elevation-over-azimuth pedestal. Both the elevation and azimuth assemblies of the pedestal are constructed of graphite fiber composite material - which greatly reduces both weight and cost as compared with the conventional steel or aluminum construction. An inflatable rotodome surrounds the elevation assembly and rotates with azimuth. The rotating sphere has minimum wind induced torque thereby minimizing the required drive power. The weight of the entire system is less than 135 pounds - yielding an extremely light weight, low cost, versatile two-axis telemetry tracking system.
Sponsors:
International Foundation for Telemetering
ISSN:
0884-5123; 0074-9079
Additional Links:
http://www.telemetry.org/

Full metadata record

DC FieldValue Language
dc.language.isoen_USen
dc.titlePNEU-SCAN - A NOVEL, LIGHTWEIGHT TWO-AXIS TELEMETRY TRACKING SYSTEMen_US
dc.contributor.authorSullivan, Arthuren
dc.contributor.departmentElectro Magnetic Processes, Inc.en
dc.date.issued1985-10-
dc.rightsCopyright © International Foundation for Telemeteringen
dc.description.collectioninformationProceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection.en
dc.publisherInternational Foundation for Telemeteringen
dc.description.abstractOver a decade ago the author developed a unique conically scanning tracking antenna feed (RADSCAN) with only one moving part and extremely high reliability. While the system had many advantages over single-channel monopulse (SCM), there were two disadvantages: one was weight due to the drive motor; the other was the fact that the scan speed was constant. EMP is just completing the development of a conscan tracking feed which is pneumatically driven (Pneu-Scan) - thus eliminating the heavy electric drive motor. Since most telemetry tracking antennas require a dehydrator/pressurizer for environmental reasons, no additional drive power is required to scan the feed since the pressurized air from the dehydrator system is used to drive the feed. In addition, the scan speed is proportional to the continuously varying pressure. If increased reliability is required, then redundant dehydrators can be used. The feed system has only one moving part constructed from graphite fiber that weighs less than an ounce. The feed is driven by a small lightweight impeller. An S-band tracking feed of this design is less than five inches in diameter - as compared to 12 inches for an SCM feed. It is also considerably lighter than an SCM feed. Decreased aperture blocking - by more than a factor of two enhances sidelobe levels and maximizes gain. The new feed illuminates a lightweight 5-foot diameter graphite-epoxy constructed paraboloidal reflector positioned by an elevation-over-azimuth pedestal. Both the elevation and azimuth assemblies of the pedestal are constructed of graphite fiber composite material - which greatly reduces both weight and cost as compared with the conventional steel or aluminum construction. An inflatable rotodome surrounds the elevation assembly and rotates with azimuth. The rotating sphere has minimum wind induced torque thereby minimizing the required drive power. The weight of the entire system is less than 135 pounds - yielding an extremely light weight, low cost, versatile two-axis telemetry tracking system.en
dc.description.sponsorshipInternational Foundation for Telemeteringen
dc.identifier.issn0884-5123-
dc.identifier.issn0074-9079-
dc.identifier.urihttp://hdl.handle.net/10150/615549-
dc.identifier.journalInternational Telemetering Conference Proceedingsen
dc.typetexten
dc.typeProceedingsen
dc.relation.urlhttp://www.telemetry.org/en
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