General Information

Serial #

10

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

Metal casing, wire, parts/synthetic parts.

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

N/A

Width

32.0 cm

Height

20.0 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Space Technology

Category

Communications

Sub-Category

N/A

Manufacturer

AKA

Sperry

Country

United States of America

State/Province

Arizona

City

Phoenix

Context

Country

Unknown

State/Province

Unknown

Period

Unknown

Canada

Part of innovative communications technology satellite (Hermes) designed and built in Canada.

Function

Momentum wheel assembly was spun to provide stability along one axis of satellite - it was aligned with pitch axis (longitudinal) and provided direct control of pitch.

Technical

ACS was design innovation which maintained spacecraft in fixed position and orientation with respect to the Earth, allowing space- craft power to be supplied by solar cells on flexible sails.

Area Notes

Unknown

Details

Markings

Plate on underside reading: 'SPAR AEROSPACE PRODUCTS LIMITED,/825 CALEDONIA ROAD, M6B 3X8,/ONTARIO, CANADA./PARTNAME MOMENTUM WHEEL ASSEMBLY- MODEL 15/SPAR P/N 61043D2-1 SERIAL NO. 010/SPAR CONTRACT PL36001-2-0132 SPAR P.O. 21642A/MFR. NAME SPERRY FLIGHT SYSTEMS ARIZONA U.S.A./MFR. CODE IDENT. 07187 SPAR SPEC NO. SG213/MFR. P/N 4014575 DATE OF MFR. APR 1974/incised white lettering on two places on casing reading: '07187ASSY4024557 S/N 3090101', also 'MWA S/N 010', 'J101', 7 'J102'/black stamped 'ITT' on parts/raised 'CANNON' on plastic caps.

Missing

N/A

Finish

Black painted casing/red enamel painted, plated and gold coloured parts/metallic wire/red, white, & black synthetic.

Decoration

N/A