Category Archives: AIAA

AIAA S-115-2013

Low Earth Orbit Spacecraft Charging Design Standard Requirement and Associated Handbook

Published by: American Institute of Aeronautics and Astronautics / 09/01/2013 / 69 pages
This document and information handbook presents an overview of the current understanding of the various plasma interactions that can result when a high-voltage system is operated in the Earth’s ionosphere. This document is also applicable to satellites during the lower latitude portion of polar orbits and to GEO satellites during the initial low altitude portion of their geostationary transfer orbit.

It references common design practices that have exacerbated plasma interactions in the past, and recommends standard requirements and practices to eliminate or mitigate such reactions.

The purpose of this standard is to provide the requirements for a design standard for high-voltage space power systems (>55 V) that operate in the plasma environment associated with LEO (altitude between 200 km and 1000 km and latitude between -50 degrees and +50 degrees). Such power systems, particularly solar arrays, are the proximate cause of spacecraft charging in LEO. These systems can interact with this environment in a number of ways that are potentially destructive to themselves and to the platform or vehicle that has deployed them.

Ordering and availability

This publication is available both in printed and PDF edition.

AIAA S-133-9-2013

Space Plug-and-Play Architecture Standard – SpaceWire Subnet Adaptation

Published by: American Institute of Aeronautics and Astronautics / 2013 / 41 pages
This document specifies the means by which the SPA features of networked component registration and message routing to endpoints on a SpaceWire network are facilitated. Accomplishing this requires low-level messaging on the SpaceWire network to provide the -convergence functions to allow the common SPA messages to be transported.

The role of a SPA subnet manager (SM-x) implemented for any transport protocol is to abstract the peculiarities of the subnetwork away, so that SPA core components and clients of those components need not know specific details to target components in the subnet for communication. To date, SPA common messaging has been bridged to several transport flavors, including USB, SpaceWire, and I2C. Research is in progress to develop the standard for optical transport as well.

Ordering and availability

This publication is available both in printed and PDF edition.