In 1954, he became Division Chief of the Vehicle Environment Division, which was composed of a physics branch, an entry simulation branch, a structural dynamics branch, the 3.5 foot hypersonic wind tunnel branch and the hypervelocity ballistic range branch. In 1958, Eggers headed up the Manned Satellite Team, which was to design a practical system for a satellite while recommending a suitable research program. This ultimately led to Ames developing and managing the Pioneer program of planetary exploration probes. Although Eggers is most famous for his pioneering work on atmospheric reentry with a blunt body, arguably his greatest achievement was his work on supersonic interference lift. This work lead directly to the XB-70 Valkyrie supersonic bomber.^{[citation needed]}

In May 1964, Eggers was appointed Deputy Associate Administrator for Advanced Research and Technology. He became Assistant Administrator for Policy in January 1968, and served until March 1971.^[1] From 1969 to 1970, Eggers was a visiting professor at the Massachusetts Institute of Technology.^[2]

Following his career at NASA, Eggers took a position as Assistant Director for Research Applications at the National Science Foundation.^[1]

His assistant, C. A. "Sy" Syvertson became Director of NASA Ames Research Center during probably its most productive years.^{[citation needed]} A close friend of both was the legendary aerodynamicist, R. T. Jones.^{[citation needed]}

• Profile at the National Academy of Engineering
• NACA Biography at NASA.gov