National Aeronautics and Space Administration

Glenn Research Center


Welcome to Advanced CNS Architectures and System Technologies (ACAST) at NASA Glenn Research Center.

ACAST Concept

ACAST Concept Graphic

In October 2003, NASA embarked on ACAST to perform research and development on selected communications, navigation and surveillance (CNS) technologies to enhance the performance of the National Airspace System (NAS).

The intent of ACAST (Advanced CNS Architectures and System Technologies) is to provide technologies to enable increases in capacity, efficiency, mobility and flexibility for users of the NAS.