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  • AFRL Pulsed Detonation Engine

    AFRL (Air Force Research Laboratory) personnel developed this Pulsed Detonation Engine (PDE) in the 2000s using mostly inexpensive, off-the-shelf automotive components. The engine worked by detonating the fuel-air mixture in repeated, controlled explosions. The resulting shockwaves created a peak thrust up to about 200 lbs. On Jan. 31, 2008, a
  • American Helicopter Co. XH-26 Jet Jeep

    In 1951 at the request of the U.S. Army, the U.S. Air Force developed the XH-26, a one-man, pulsejet-driven helicopter. Rather than having an internal engine like other helicopters, the Jet Jeep was powered by two pulsejets on the end of each rotor blade tip. American Helicopter chose the name "Jet Jeep" because the XH-26 would be used like an
  • Avro Canada VZ-9AV Avrocar

    The Avrocar was the result of a Canadian effort to develop a supersonic, vertical takeoff and landing (VTOL) fighter-bomber in the early 1950s. However, its circular shape gave it the appearance of a “flying saucer” out of science fiction movies of the period.A.V. Roe (Avro) Aircraft Limited (later Avro Canada) based its design concept for the
  • Aero Commander U-4B

    This U-4B, a U.S. Air Force version of the Aero Commander L-26, was used by President Dwight D. Eisenhower from 1956 to 1960 for short trips. A pilot himself, President Eisenhower would often take the controls, primarily during trips between Washington, D.C., and his farm in Gettysburg, Penn. The first presidential aircraft to have only two
  • Austro-Hungarian Transportation Corp Collar Insignia

    Note: This item is currently in storage. This insignia was worn by members of the Transportation Corp of the Austro-Hungarian Army.  The Austro-Hungarian Army was the combined military force of Austria and Hungary during World War I. The three components of this Army were the Common Army (soldiers recruited from all areas of the Austro-Hungarian
  • Allison YT-56-A-3 Turboprop

    The T-56, a jet engine that uses a propeller to produce most of its thrust, was originally designed to power the Lockheed C-130 Hercules. Because the T-56 compressor and turbine rotate at a high speed (13,820 rpm), a reduction gearbox is used to allow the propeller to turn at a much slower, more efficient speed. The production T-56 engine delivers
  • Aviation Section Enlisted Patch

    Note: This item is currently in storage.This is an insignia patch worn by enlisted personnel of the Aviation Section of the U.S. Army Signal Corps during World War I. On May 24, 1918, President Woodrow Wilson transferred the Aviation Section from the Signal Corps to the newly established U.S. Army Air Service. Despite this organizational change,
  • Aviation Section Aviation Mechanic Patch

    Note: This item is currently in storage.This is an insignia patch worn by aviation mechanics of the U.S. Army Signal Corps, Aviation Section during World War I. On May 24, 1918, President Woodrow Wilson transferred the Aviation Section from the Signal Corps to the newly established U.S. Army Air Service. The U.S. Army Air Service was a forerunner
  • Arctic/Cold Weather Balloon Anchor

    Note: This item is currently in storage.This item is a metal anchor plate that was developed to be the ground contact for an observation balloon attached to it by mooring lines. Balloons would be held stationary in the Arctic regions or northern European regions during the winter months by pouring a mixture of water and snow onto the anchor plate
  • Anti-Aircraft Unit Patch

    Note: This item is currently in storage.This winged ammunition patch is the insignia for U.S. anti-aircraft units during World War I. With anti-aircraft being in its wartime infancy during WWI, U.S. Army anti-aircraft personnel had to learn in the field. These soldiers quickly gained proficiency in how to set up the weapon and measure size,

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