Pegasus dedicated and multiple launch capabilities for low earth orbit communications satellite constellations

Abstract

The Pegasus air-launched space booster has established itself as America's standard small launch vehicle. Pegasus provides small satellite users with an exceptionally flexible and cost-effective means of placing single or multiple payloads into the optimum orbits required to meet missions objectives. In addition to standard separable interfaces for individual dedicated payloads, support structures have been developed which can support up to eight satellites. This paper describes the vehicle's design and standard payload interfaces, and provides an overview of integration and launch operations. Vehicle design features include all graphite composite construction and robust digital avionics. Payload design issues include payload volume, mass capability, and interfaces, design loads, and deployment options. Vehicle and payload processing issues include facilities, integration and handling methods, contamination control, and launch operations. Specific attention will be given to services which are available to support multiple satellite launches. A recent multiple launch of seven small communications satellites will be described, which demonstrates Pegasus' capability to populate low Earth orbit communications satellite constellations quickly and cost-effectively.