NACA flight 42. Flight for RKO film Jet Pilot. Slight engine fire but no damage. References: 49 , 97 .

Solar radiation research. Launched at 1029 local time. Reached 20 km.

Biological research. Launched at 1139 local time. Reached 61.2 km. The first Aerobee research rocket containing a biomedical experiment (monkey - name unknown).

NACA flight 43. Pilot familiarization. Reached mach 1.07. References: 49 , 97 .

NACA flight 44. Plane and instrument check. References: 49 , 97 .

Decree 'On the Transfer of the Dnepropetrovsk Automobile Plant From the Ministry of Automobile and SM Tractor Industry to the Ministry of Armaments--transfer of Dnepropetrovsk Plant No. 586 into the Ministry of Armaments for missile production' was issued References: 474 .

NACA flight 45. Wing loads and aileron effectiveness. Aileron rolls at mach 0.90. References: 49 , 97 .

Council of Soviet Ministers (SM) Decree 'On formation of OKB-23 at Fili' was issued. References: 474 .

Ionosphere research. Launched at 1246 local time. Reached 3.7 km.

NACA Langley's Pilotless Aircraft Research Division demonstrated low drag of thin delta wing (which led to F-102, F-106, B-58) with rocket-powered model flights. References: 17 .

Ministry of Armaments Decree 'On starting of series production of the R-1 at Dnepropetrovsk Plant No. 586' was issued. Factory 66 at Zlatoust was originally selected to produce the R-1 in 1949, with SKB-385 to assume production design responsibility and to develop variations of the R-1 with greater range. But the work dragged on without results, and on 1 June 1951 Beria switched R-1 production to Factory 586 at Dnepropetrovsk. He ordered engine production to begin in two months. References: 474 .

Failed on static firing. Accidentally launched during ground test. Reached 6 km.

Temperature, winds research. Launched at 1818 local time. Reached 6.4 km.

Solar radiation, airglow research. Launched at 1711 local time. Reached 88.5 km.

Temperature, winds research. Launched at 2311 local time. Reached 66.8 km.

Navy D-558-II Douglas Sky-rocket, flown by test pilot William Bridgeman, set a new unofficial airplane speed and altitude record at Edwards AFB, Muroc Dry Lake, Calif.; speed estimated at more than 1,200 mph; altitude estimated 70,000 feet. References: 17 .

First launch in quality assurance test series of operational missiles. References: 283 , 344 .

Launch failure. Carried solar and cosmic radiation experiments for Naval Research Lab.

JPL fired first of a series of 3,544 Loki solid-propellant antiaircraft missiles at WSPG, the Army program ending after September 1955. Loki rocket was later used in ONR Rockoon upper atmosphere balloon-launched rocket research soundings. References: 17 .

Last launch in quality assurance test series of operational missiles. References: 283 , 344 .

Launched 14:43 local time. Reached 5.8 km. Carried solar radiation, air glow, sky brightness experiments for Air Research and Development Command.