Fredric F. Ehrich ’47, an MIT senior lecturer, instructs students during the IAP subject “Introduction to Jet Propulsion.” The class began hands-on testing of a jet engine.
Fredric F. Ehrich ’47, an MIT senior lecturer, instructs students during the IAP subject “Introduction to Jet Propulsion.” The class began hands-on testing of a jet engine.
Christopher A. Maynor—The Tech
