Orbital 621 User Manual

Hingelock

Hingelock

TEE Deployer

TEE Deployer

Model 621

Model 621

Introduction

Hingelock deployer Model 621 was originally developed
for the San Marco D/L satellite. Two such units, located
180° apart, were deployed to form a
dipole antenna along the Z-axis as part of a 3-axis
Electric Field Experiment. This motorized mechanism is
capable of extending and retracting a 0.5 in (1.27 cm)
diameter Tubular Extendible Element (TEE). The deployer
features electrical and mechanical stops at both

Typical Technical Specifications:

Antenna Element

Deployed Length: Up to 32.8 ft

(10 meters)
Diameter: 0.5 in (1.27 cm)
Configuration: Hingelock
Material: Beryllium Copper

0.002 in

(0.0508 mm) thick
Thermal Control
Coating: Silver with Kapton

(if required)
Weight: 6.96 gr/ft

(22.86 gr/m)

full-extension and -retraction. A potentiometer, driven by
the moving element, provides a continuous indication
of deployed length. This deployment mechanism is de­signed to meet the requirements of document MIL-A­083577B (USAF) General Specification for Moving
Mechanical Assemblies for Space and Launch Vehicles.
Similar units were used on the Radio Astronomy Explorer
(RAE-B) Satellite.

Deployer

Height: 10.1 in (25.65 cm)
Length: 5.2 in (13.21 cm)
Width: 3.2 in (8.31 cm)
Total Unit Weight: 2.4 lbs. (1.1 kg)
Drive Motor: Brush Type
Power: 4 Watts maximum
Voltage: 23-33 Vdc
Deployment Rate: Approximately 0.4

in/sec (1.0 cm/sec)
Operating
Temperature Range: -20°C to +40°C

Features

■ Automatic full-extend and -retract

motor power cut-off

■ Full-extend and -retract flags

■ Minimal magnetic materials

2.655 REF.

3.18

7.71

2.17

4.560 REF.

10.1

.75

All dimensions are in inches

unless otherwise noted

Orbital Technical Services Division
5010 Herzel Place
Beltsville, MD 20705
Phone: [phone] FAX: [phone]
www.orbital.com

31

3.95

1.52

5.21

Hingelock TEE Deployer

Model 621

7500 Greenway Ctr. Dr.,
Ste. 700 Greenbelt, MD 20770
Phone: [phone] FAX: [phone]