Orbital 5E9 User Manual

Hingelock
Hingelock
TEE Deployer
TEE Deployer
Model 5E9
Model 5E9
Introduction
Orbital’s Hingelock deployer model 5E9 was develpoed to meet “Deep Space” requirements for NASA’s Cassini mission to the planet Saturn. As part of the RPWS instrument, all three Orbital model 5E9 antennas were successfully deployed ten meteres each to full length on 24 October 1997, two weeks after launch of the Cassini spacecraft. The objective of the RPWS investogation is to study radio and plasma waves in the vicinity of Saturn and during the seven year journey to Saturn.
Deployer model 5E9 is a motor driven mechanism capable of extending and retracting a 1.12 inch (2.86 cm) diameter, 32.8 foot (10 meter) long Tubular Extendable Element (TEE). The unit is driven by an AC motor.
The deployer features electrical and mechanical stops at full-extention and -retraction. A potentiometer, driven by the moving element, provides a continuous indication of deployed length. To ensure minimal distortions due to thermal gradients in a space environment, material perforations and thermal control coatings are applied on both the inside and outside TEE surfaces. This unit can be deployed or retracted in orbit.
This deployment mechanism is designed to meet requirements of MIL-A-083577B (USAF), General Specification for Mechanical Assemblies for Space and Launch Vehicles.
Typical Technical Specifications:
Antenna Element
Deployed Length: Up to 38 ft (10
meters)
Diameter: 1.25 in (2.86 cm)
Configuration: Hingelock Material: Beryllium Copper,
0.0045 in thick (0.1143 mm) thick
Thermal Control Silverand
perforations with Teflon film (if required)
Weight: 831.43 gr/ft
(with coatings): 103.12 gr/m
Length: 21.2 in (58.3 cm) Width: 8.09 in (20.5 cm) Height: 4.86 in (12.3 cm) Total Unit Weight: 10.5 lbs. (4.79 kg) Drive: AC Motor Inverter Power: 320 milliamps
Deployment Rate: Approximately 1.0 in/sec
Operating Temp Range: -15C to +55C
Deployer
maximum at 30 volts
(2.5 (cm/sec)
Features
Automatic full-extended and -retract motor power cut-off
Full-extend and -retract flags
Minimal magnetic materials
Side mounting configuration is shown
Deployed TEE alignment to within 0.1 degree
All dimensions are in inches
unless otherwise noted
Orbital Technical Services Division 5010 Herzel Place Beltsville, MD 20705 Phone: (301) 902-1152 FAX: (301) 931-0396 www.orbital.com
Hingelock TEE Deployer
Model 5E9
7500 Greenway Ctr. Dr., Ste. 700 Greenbelt, MD 20770 Phone: (301) 220-5600 FAX: (301) 474-2600
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