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Pointing & Momentum Control

Assembly

Reaction wheels, gyros, and star trackers that slew the observatory between targets and hold it steady enough for the fine guidance loop to deliver milliarcsecond pointing. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Pointing & Momentum Control parts and their functions

4 top-level parts · 484 parts in total · full bill of materials below
Pointing & Momentum Control parts diagram: 1 reaction wheel assembly, 2 hemispherical resonator gyro, 3 star tracker, 4 attitude control electronics. 484 parts in 4 assemblies.
Pointing & Momentum Control parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Reaction Wheel Assembly 5 parts 6× Reaction wheel assemblies
2 Hemispherical Resonator Gyro 2× Hemispherical resonator gyros
3 Star Tracker 3× Star trackers
4 Attitude Control Electronics 4 parts 1× Attitude control electronics

3D model

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Build & assembly graph

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Bill of materials for Pointing & Momentum Control

4 top-level lines · 20 rows shown · 484 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Reaction Wheel Assembly 5 parts space-telescope-reaction-wheel 6× 6 28 assembly
1.1 Stator Assembly 3 parts stator-assembly 1× 6 3 assembly
1.1.1 Stator Core (laminations) stator-core 1× 6 · part
1.1.2 Copper Winding copper-winding 1× 6 · part
1.1.3 Slot Insulation stator-insulation 1× 6 · part
1.2 Rotor Assembly 4 parts rotor-assembly 1× 6 19 assembly
1.2.1 Rotor Shaft rotor-shaft 1× 6 · part
1.2.2 Rotor Core rotor-core 1× 6 · part
1.2.3 Neodymium Magnet neodymium-magnet 16× 96 · part
1.2.4 Ball Bearing ball-bearing 1× 6 · part
1.3 Ball Bearing ball-bearing 2× 12 · part
1.4 Hall Sensor hall-sensor 3× 18 · part
1.5 Wheel Vibration Isolator space-telescope-wheel-isolator 1× 6 · part
2 Hemispherical Resonator Gyro space-telescope-gyro 2× 2 · part
3 Star Tracker space-telescope-star-tracker 3× 3 · part
4 Attitude Control Electronics 4 parts space-telescope-acs-computer 1× 1 311 assembly
4.1 Bare PCB pcb-bare 2× 2 · part
4.2 Compute SoC Module soc-module 1× 1 · part
4.3 SMD Passive (R/C/L) smd-passives 300× 300 · part
4.4 Connector connector 8× 8 · part

Where the pointing & momentum control is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Used in 1 assembly

Space Telescope

Sourcing: possible vendors

Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work
VendorHQSpecialtyMOQLead time
🇨🇳Foxconn
foxconn.com ↗ 		Shenzhen, CN Electronics contract mfg 1,000 pcs 6–10 wks
🇸🇬Flex (Singapore)
flex.com ↗ 		Singapore Electronics contract mfg 1,000 pcs 6–10 wks
🇮🇳Dixon Technologies
dixoninfo.com ↗ 		Noida, IN Electronics contract mfg 1,000 pcs 6–10 wks
🇨🇳BYD Electronics
bydelectronic.com ↗ 		Shenzhen, CN Electronics contract mfg 1,000 pcs 6–10 wks
🇸🇬Venture Corp
venture.com.sg ↗ 		Singapore Electronics contract mfg 1,000 pcs 6–10 wks