1945 July 1 - Launch Site: Wallops Island. Launch Complex: -. Launch Pad: -. -
 First launch from Wallops Island. Nation: USA. First launching of a two-stage rocket-propelled research model, the Tiamat missile, which employed six rockets as boosters, had automatic stabilization, its maneuvers were programed, and its testing was the first research program of the NACA's Wallops Island Station.
References: 17.
1945 July - - Goddard's rocket team ends its work. Nation: USA. Spacecraft: X-2. Goddard's rocket team ends its work at the Naval Engineering Experiment Station at Annapolis, Maryland. During the previous three years the team had developed a variable-thrust rocket motors. This required hundreds of proving-stand tests, but eventually producing a successful motor, later used on the Bell X-2 rocket plane.
References: 482.
1945 July 4 - Launch Vehicle: Corporal. - Baby Wac rocket flies. Nation: USA. Baby Wac rocket, one-fifth scale model of Wac Corporal proposal, flight tested at Camp Irwin by JPL. References: 17.
1945 July 5 - Launch Vehicle: V-2. -
 Soviets occupy Mittelwerk. Nation: Germany. The Americans withdraw from the Soviet zone, having taken key V-2 tooling and parts.
1945 July 6 - Launch Vehicle: EA 1941. FAILURE: Engine cut-off after 7.5 seconds instead of 13 seconds planned. -
 EA 1941 Nation: France. Apogee: 30 km (18 mi). Launched from Toulon, France. Most successful launch attempt. Not recovered, but estimated to have reached 1400 m/s and to have impacted in the ocean 60 km downrange. References: 2.
1945 July 6 - Launch Vehicle: EA 1941. FAILURE: Accelerated at a high rate and exploded after 1.2 seconds flight. - EA 1941 Nation: France. Apogee: 1.00 km (0.60 mi). Launched from Toulon, France. The rocket took off at high acceleration, exploding after 1.2 seconds. References: 2.
1945 July 6 - Launch Vehicle: EA 1941. FAILURE: Veered off, impacted 10 km from the launch pad. - EA 1941 Nation: France. Apogee: 5.00 km (3.10 mi). Launched from Toulon, France. The rocket left the launch pad at low acceleration, veered off, and crashes at sea 10 km from the pad. References: 2.
1945 July 18 - Launch Vehicle: EA 1941. FAILURE: Failed to generate sufficient thrust for lift-off. - EA 1941 Nation: France. Apogee: 0 km ( mi). Launched from Toulon, France. References: 2.
1945 July 18 - Launch Vehicle: EA 1941. FAILURE: Failed to generate sufficient thrust for lift-off. - EA 1941 Nation: France. Apogee: 0 km ( mi). Launched from Toulon, France. The pad was damaged, requiring substantial repairs. The source of the rocket's problem is finally found to be burn-through and loss of a portion of the inner wall of the combustion chamber, which blocked the nozzle exit. Ironically the last EA-1941 is ground run for full duration in the summer of 1946 without incident. However plans to develop it further as a sounding rocket are abandoned.
References: 2.
1945 July 23 - Launch Vehicle: V-2. - German space plans revealed to US public. Nation: USA. Life magazine published drawings of a manned space station as envisioned by the German rocket scientists of Peenemünde. References: 17.
1945 August 1 - - XCALT-6000 rocket engine delivered. Nation: USA. First successful U.S. chemical gas, generator-driven, turbopump fed, regeneratively cooled rocket engine (XCALT-6000), delivered to AAF by Aerojet-General Corp. References: 17.
1945 August 6 - -
 U.S. drops atomic bomb on Japanese city of Hiroshima Nation: Japan.
1945 August 9 - - U.S. drops atomic bomb on Japanese city of Nagasaki Nation: Japan.
1945 August 10 - - Dr. Robert Goddard died in Baltimore. Nation: USA. References: 482.
1945 August 20 - -
 Soviet Union begins development of the atomic bomb. Nation: USSR. State Committee for Defence (GKO) Decree 9887/ss/op 'On a Special Committee Under the GKO's Jurisdiction--creation of Special Committee and its subordinate First Chief Directorate of GKO (later of Council of Ministers) for the development of atomic bomb' References: 474.
1945 August 24 - Launch Site: Wallops Island. Launch Complex: -. Launch Pad: -. - First successful launch from Wallops Island. Nation: USA. First successful use of a telemetry system in a rocket-propelled flight research model, the two-stage Tiamat at NACA Wallops Island, Va. References: 17.
1945 September 1 - Launch Vehicle: V-2. - Von Braun in America Nation: Germany. Von Braun and a small contingent fly to Fort Bliss, Texas. Over 100 Peenemuende rocket engineers will follow by sea.
1945 September - - LL rocket-powered transonic aerodynamic testbed authorised. Nation: USSR. Spacecraft: LL. In 1946 to 1948 the LL-1 flew 30 times and the LL-3 100 times, with test pilots M Ivanov, Amet-Khan Sultan, Anokhin, and Rybko at the controls.
1945 September 2 - - Japan signs official surrender on V-J Day Nation: Japan.
1945 September 27 - Launch Site: White Sands. Launch Complex: LC33. Launch Pad: -. Launch Vehicle: Wac. Model: WAC. LV Configuration: WAC 1. FAILURE: Failure. - Dummy launch Nation: USA. Agency: USA OR. Apogee: 0 km ( mi). Launcher/booster stage test. No upper stage. References: 2.
1945 September 28 - Launch Site: White Sands. Launch Complex: LC33. Launch Pad: -. Launch Vehicle: Wac. Model: WAC. LV Configuration: WAC 2. - Dummy launch Nation: USA. Agency: USA OR. Apogee: 2.00 km (1.20 mi). Launcher/booster stage test. No upper stage. References: 2.
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