This collection contains the papers of William Hewitt Phillips, an aerospace engineer for the National Advisory Committee for Aeronautics (NACA) and National Air and Space Administration (NASA) at Langley Research Center and chief of the Flight Dynamics and Control Division from 1970 to 1979. The collection includes lecture notes, reports and memoranda tracing the development of Phillips' theories while at Langley and spans from his work on World War II-era aircraft to the early U.S. space program and beyond, as well as his longstanding and active interest in model aircraft design and testing. These papers include calculations of various numerical values in relation to various aircraft and spacecraft, as well as drawings and other illustrations. The collection also contains a set of Phillips' official reports, files devoted to lectures delivered by Phillips, and notes from courses and lectures presented by others. Major topics in this collection include aircraft stability and control; gust alleviation; wing theories; types of planes; shuttles; airfoils; gliders; simulation of space operations (particularly the Lunar Landing Research Facility), and model aircraft. An item of note is a typescript draft of Phillips' autobiography, Journey into Aeronautical Research: a Career at NASA Langley Research Center.