Dec 16 1948

From The Space Library

First flight of tailless X-4 (No. 1) research airplane completed, Northrop test pilot Charles Tucker as pilot. Two X-4's were built by Northrop aid some 60 research flights were made by NACA at Muroc with the X-4 (No. 2) after about a dozen Air Force flights.

V. Gradecak speaks to the GfW in Stuttgart on "Thermodynamische und aerodynamische Verhältnisse bei der Landung des Raumschiffes" (Thermodynamic and aerodynamic conditions during the landing of the spaceship).