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Hingelock

TEE Deployer

Model T126

Hingelock

TEE Deployer

Model T126

Introduction

Orbital’s Hingelock deployer model T126 was develpoed

to meet requirements for the Air Force Communications/

Navigation Outage Forecasting System (C/NOFS)

mission. A total of six Orbital Model T126, Deployable

Electric Field Antenna Booms with Spherical Sensors were

developed as a part of the Vector Electric Field Instrument

(VEFI) experiment provided by NASA/GSFC.

Deployer model T126 is a motor driven mechanism

capable of extending and retracting a 1.12 inch

(2.86cm) diameter, 31.2 foot (9.5 meter) long Tubular

Extendable Element (TEE). For C/NOFS an eight

conductor flat cable is deployed inside the TEE to provide

power and signal to a 10cm diameter Sphere Sensor

located at the tip of the boom.

Typical Technical Specifications:

Antenna Element

Deployed Length: Up to 31.2 ft (9.5

meters)

Diameter: 1.25 in (2.86 cm)

Configuration: Hingelock

Material: Beryllium Copper,

0.0045 in thick

(0.1143 mm) thick

Thermal Control Silver and

perforations with

Teflon (if required)

Weight: 31.4 gr/ft

(with coatings): 103.12 gr/m

Deployer

Length: (deployer unit only)

18.94 in (48.1 cm)

Including Sphere and Shadow Equalizer:

28.3 in (71.9 cm)

Width: 7.0 in (17.8 cm)

Height: 8.23 in (20.9 cm)

Total Unit Weight: (14 lbs. 6.3 kg)

Drive: Brushless DC Motor

Inverter Power: 300 milliamps

maximum at 28 volts

Deployment Rate: Approximately 1.0 in/sec

(2.5 (cm/sec)

Operating

Temp Range: -20C to +60C

The deployer features electrical and mechanical stops at

full-extension 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 is driven

by a brushless DC motor and can deploy or retract in orbit.

This deployment mechanism is designed to meet the

requirements of MIL-A-083577B (USAF), General

Specification for Mechanical Assemblies for Space and

Launch Vehicles.

Summary of content (2 pages)

PAGE 1
Hingelock TEE Deployer Model T126 Introduction Orbital’s Hingelock deployer model T126 was develpoed to meet requirements for the Air Force Communications/ Navigation Outage Forecasting System (C/NOFS) mission. A total of six Orbital Model T126, Deployable Electric Field Antenna Booms with Spherical Sensors were developed as a part of the Vector Electric Field Instrument (VEFI) experiment provided by NASA/GSFC. Deployer model T126 is a motor driven mechanism capable of extending and retracting a 1.
PAGE 2
Features ■ Spherical Sensor (10 cm ø) and extendable Shadow Equalizer ■ Automatic full-extended and -retract motor power cut-off ■ Full-extend and -retract flags ■ Minimal magnetic materials ■ Side mounting configuration ■ Non-flight protective cover for sphere provided ■ Remote mechanical caging tool provided ■ Deployed TEE alignment to within 0.