Air Pumping System for a Laminar Flow Control Aircraft

This paper describes the design and operation of the pumping system used to remove boundary layer air from the wing surfaces of the X-21A Laminar Flow Control airplanes. Included are comments on pumping system requirements and design characteristics for future applications. Part 1 includes a discussion of the initial problem statement, system selection, and system operation. Part 2 covers the pumping design and development.