HARDWARE / PRODUCTUpdated 24 Jul 2026

HR04, HC7 & HC9 Reaction Wheel Assemblies

Honeywell Aerospace
HR04, HC7 & HC9 Reaction Wheel Assemblies

The HR04, HC7, and HC9 are a series of reaction wheel assemblies designed for spacecraft attitude control, offering flexibility in packaging, momentum, and torque options.

Typed specifications2 values

Discloses 1 of 10 fields engineers filter by in this category (category median 5).

Power consumption
5 W
as published, mode unspecified · vendor page (catalogue a
Operating temperature
-10–50 °C
as published, mode unspecified · vendor page (catalogue a

Each value is typed with its unit and measurement condition and cites the datasheet page it was taken from. Nothing is guessed: a field that is absent here has not been published by the manufacturer. machine-extracted ✓ checked by NewSpace Market ✓ manufacturer confirmed by the manufacturer.

As published by the supplier1 lines, in the manufacturer's own wording
Gen 1 qualification (HC7 and HC9)
Completed in June 2021

About

The HR04, HC7, and HC9 reaction wheel assemblies are designed to control the attitude of spacecraft and satellites by using electric motors to spin flywheels, generating momentum to tilt or point the spacecraft. These assemblies are particularly suitable for applications like communications satellites that require stable pointing at fixed ground targets. They offer extreme flexibility in packaging options and provide precision performance supported by advanced drive technology, all within a greatly reduced package size. The HC7 and HC9 models are specifically tailored for New Space price points, offering flexible momentum and torque options. Key advantages include high-output, low-jitter performance for precise position and pointing control, plug-and-play attitude control system (ACS) insertion, minimized vehicle integration time, and application-scalable optimization. Integrated Honeywell technologies include a proven spin-bearing design, insensitivity to low or transitional operational speeds, optimized momentum density packaging, and a flexible vehicle digital interface. Gen 1 Qualification for the HC7 and HC9 was completed in June 2021.

Documentation

No public datasheet yet — request the datasheet / ICD from the supplier.

Source: aerospace.honeywell.com ↗

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