Pulse Jet Engine

1. Introduction
Russian inventor with the artillery officer N. Teleshov had patented a pulse jet engine in 1864 while Swedish inventor named Martin Wiberg claimed of having invented the first pulse jet, in Sweden, but that claim was unclear.
The first working pulsejet engine was patented during 1906 by Russian engineer V.V. Karavodin, who made a working model in 1907. The French discoverer Georges Marconnet also patented his valve less pulsejet engine by 1908, and Ramon Casanova, in Ripoll, Spain also patented a pulsejet in Barcelona in 1917 which was started in 1913. Paul Schmidt, forged a more efficient design due to the modification of the intake valves (or flaps), earning him government support from the German Air Ministry

The spark only functioned for the start system for the engine; the Argus As 014, like all pulsejets, did not need ignition coils or magnetos for ignition — the ignition source being the tail of the preceding flash during the run. Different to popular belief, the engine casing did not provide sufficient heat to cause Diesel-type ignition of the fuel, as there is minor compression within a pulsejet engine.
The Argus As 014 valve array was created on a shutter system that worked at the 43 to 45 cycles-per-second frequency of the engine.
Three air nozzles at the front of the Argus As 014 were attached to an external high pressure source to start the engine. The fuel used during ignition was acetylene, with the experts having to place a baffle of wood or cardboard in the exhaust pipe to stop the acetylene dispersing before complete ignition. Once the engine was ignited and minimum operating temperature was attained, outside hoses and connectors were removed.
As V-1 was a cruise missile, needed landing gear, in its place the Argus As 014 was launched on an inclined ramp motorized by a piston-driven steam catapult. Steam power to fire the piston was produced by the violent exothermic chemical reaction formed when hydrogen peroxide and potassium permanganate (termed T-Stoff and Z-Stoff) are

The engine's typical droning noise earned it the nicknames "buzz bomb" or "doodlebug". The V-1 continued a German cruise missile used during World War II, most superbly in the bombarding of London in 1944. Pulsejet engines was cheap and easy to construct, were the seeming choice for the V-1's creators, given the Germans' materials shortages and overstretched industry at that stage of the war. Inventors of modern cruise missiles do not pick pulsejet engines for momentum, preferring turbojets or rocket engines.
Wright Field technical personnel reverse-engineered the V-1 from the remains of a V-1 that failed to detonate in Britain. The result was the making of the JB-2 Loon, with the airframe built by Republic Aviation, and the Argus As 014 re starting the production of pulsejet power plant made by Ford Motor Company. General Henry Harley "Hap" Arnold of the United States Army Air Forces was worried that this weapon could be built of steel and wood, in 2000 man hours and estimated cost of US$600 (in