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Experimental Flight Computer (IHU-2)
- Design Team:
- Lyle Johnson, WA7GXD (USA)
Chuck Green, N0ADI (USA)
Peter Gülzow, DB2OS (Germany)
James Miller, G3RUH (GB)
Karl Meinzer, DJ4ZC (Germany)
- Fabrication Responsibility:
- Lyle Johnson, WA7GXD (USA)
Chuck Green, N0ADI (USA)
- Software Development:
- James Miller, G3RUH (GB)
Karl Meinzer, DJ4ZC (Germany)
- Size:
- 270x200
- Average Power Dissipation:
- 1.3 Watt
Description
IHU-2 is intended to act as a future replacement for the current COSMAC-1802- based flight computer (IHU) that has flown on all previous P3 missions and indeed controls the AMSAT P3D satellite. The IHU-2 is aboard P3D as a proof-of- technology experiment. Although in contact with other P3D sub-systems, it will not manage anything mission critical.IHU-2 is an experiment to use currently available, standard process technology components to implement a higher-performance IHU, and running an enhanced version of IPS to enable software re-use. It provides a test-bed for a one wire-per-module control/status system, implements a CMOS imager for separation photography and navigation experiments, and is very power efficient. Finally, it includes a DSP-style, up to 20 kilobit/sec radio modem experiment to better balance memory capacity to uplink/downlink data rates.
This article documents the design from inspiration in September 1997 to running hardware/software, April 1998.
Created: 1999-07-13
Updated: 1999-07-13
by Ralf Zimmermann, DL1FDT
This URL: http://www.RalfZimmermann.de/phase3d/ihu2.html