RocketA rocket (from ) is a vehicle that uses jet propulsion to accelerate without using the surrounding air. A rocket engine produces thrust by reaction to exhaust expelled at high speed. Rocket engines work entirely from propellant carried within the vehicle; therefore a rocket can fly in the vacuum of space. Rockets work more efficiently in a vacuum and incur a loss of thrust due to the opposing pressure of the atmosphere. Multistage rockets are capable of attaining escape velocity from Earth and therefore can achieve unlimited maximum altitude.
Anti-aircraft warfareAnti-aircraft warfare, counter-air, anti-air, AA guns, layered air defence or air defence forces is the battlespace response to aerial warfare, defined by NATO as "all measures designed to nullify or reduce the effectiveness of hostile air action". It includes surface based, subsurface (submarine launched), and air-based weapon systems, associated sensor systems, command and control arrangements, and passive measures (e.g. barrage balloons). It may be used to protect naval, ground, and air forces in any location.
Outer spaceOuter space, commonly referred to simply as space, is the expanse that exists beyond Earth and its atmosphere and between celestial bodies. Outer space is not completely empty; it is a near-perfect vacuum containing a low density of particles, predominantly a plasma of hydrogen and helium as well as electromagnetic radiation, magnetic fields, neutrinos, dust, and cosmic rays. The baseline temperature of outer space, as set by the background radiation from the Big Bang, is .
Waffen-SSThe Waffen-SS (ˈvafn̩ʔɛsˌʔɛs) (Armed SS) was the combat branch of the Nazi Party's paramilitary Schutzstaffel (SS) organisation. Its formations included men from Nazi Germany, along with volunteers and conscripts from both occupied and unoccupied lands. The Waffen-SS grew from three regiments to over 38 divisions during World War II, and served alongside the German Army (Heer), Ordnungspolizei (Order Police), and other security units.
VolkssturmThe Volkssturm (ˈfɔlksʃtʊʁm; "people's storm") was a levée en masse national militia established by Nazi Germany during the last months of World War II. It was set up by the Nazi Party on the orders of Adolf Hitler and established on 25 September 1944. It was staffed by conscripting males between the ages of 16 and 60 years, who were not already serving in some military unit. The Volkssturm comprised one of the final components of the total war promulgated by Propaganda Minister Joseph Goebbels, part of a Nazi endeavor to overcome their enemies' military strength through force of will.
Atmospheric entryAtmospheric entry is the movement of an object from outer space into and through the gases of an atmosphere of a planet, dwarf planet, or natural satellite. There are two main types of atmospheric entry: uncontrolled entry, such as the entry of astronomical objects, space debris, or bolides; and controlled entry (or reentry) of a spacecraft capable of being navigated or following a predetermined course. Technologies and procedures allowing the controlled atmospheric entry, descent, and landing of spacecraft are collectively termed as EDL.
Operation PaperclipOperation Paperclip was a secret United States intelligence program in which more than 1,600 German scientists, engineers, and technicians were taken from the former Nazi Germany to the U.S. for government employment after the end of World War II in Europe, between 1945 and 1959. Conducted by the Joint Intelligence Objectives Agency (JIOA), it was largely carried out by special agents of the U.S. Army's Counterintelligence Corps (CIC). Many of these personnel were former members and some were former leaders of the Nazi Party.
AggregatThe Aggregat series (German for "Aggregate") was a set of ballistic missile designs developed in 1933–1945 by a research program of Nazi Germany's Armed Forces (Wehrmacht). Its greatest success was the A4, more commonly known as the V-2. The A1 was the first rocket design in the Aggregat series. It was designed in 1933 by Wernher von Braun in a German armed forces research program at Kummersdorf headed by Walter Dornberger. The A1 was the grandfather of most modern rockets. The rocket was long, in diameter, and had a takeoff weight of .
PeenemündePeenemünde (peːnəˈmʏndə, "Peene [River] Mouth") is a municipality on the Baltic Sea island of Usedom in the Vorpommern-Greifswald district in Mecklenburg-Vorpommern, Germany. It is part of the Amt (collective municipality) of Usedom-Nord. The community is known for the Peenemünde Army Research Center, where the world's first functional large-scale liquid-propellant rocket, the V-2, was developed. The village with its seaport is located on the westernmost extremity of a long sand-spit, where the Peene empties into the Baltic Sea, in the northwestern part of Usedom Island.
German rearmamentGerman rearmament (Aufrüstung, ˈaʊ̯fˌʀʏstʊŋ) was a policy and practice of rearmament carried out by Germany from 1918 to 1939, in violation of the Treaty of Versailles which required German disarmament after WWI to prevent it starting another war. It began on a small, secret, and informal basis shortly after the treaty was signed, but was openly and massively expanded after the Nazi Party came to power in 1933.
