Spring 1938 - Launch Site: Peenemuende. Launch Complex: -. Launch Pad: -. Launch Vehicle: A3, A5, V-2. -
 A5 delivered to Peenemuende. Nation: Germany. The first A5 drop test model is delivered to Peenemuende just weeks after the third A3 test. Production is planned at a rate of 10 per month to define the A4 aerodynamic configuration. Objective of the first tests is to break the sound barrier - in the wind tunnel no configuration of fins had managed to go through the barrier without disintegrating. The only test possibility was to drop the model from a great height, and let gravity accelerate it to supersonic speeds. The model weighs 250 kg and is 1.6 m long and 20 cm in diameter.
References: 693.
1938 April 20 - Launch Vehicle: Goddard. Model: Goddard L-C. -
 Flight of Goddard series L section C rocket Nation: USA. Apogee: 1.26 km (0.78 mi). Rocket reached altitude 4215 ft; duration of propulsion 25.3 sec; landed 6960 ft from tower; carried official NAA barograph. References: 482.
1938 May 26 - Launch Vehicle: Goddard. Model: Goddard L-C. - Flight of Goddard series L section C rocket Nation: USA. Apogee: 0.0400 km (0.0249 mi). Rocket reached altitude 140 ft; veered to right, landed 500-600 ft from tower. References: 482.
1938 June 1 - Launch Vehicle: JATO. - Cal Tech begins JATO development. Nation: USA. Jack Parsons of Cal Tech conceived value of slow-burning rocket propellant of constant thrust for JATO use, active development of which was undertaken by Cal Tech in 1940. References: 17.
1938 June 7 - -
 Korolev arrested by Soviet secret police. Nation: USSR.
1938 June 15 - - Von Braun is discharged from the Luftwaffe. Nation: Germany.
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