Has the Pulse Jet or the Ram Jet ever had a successful application since the old V-1 "Flying Bomb"?Thanks.

Question

I once tried to make a Pulse Jet when I was a kid.But all I did was blow my eye-brows off.

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Thanks guys,
some lovely answers! I always thought that an afterburner was where you blew more fuel in.
The basic idea of a Ram Jet is so BEAUTIFULLY simple that it deserves to be successful: it's so simple that it's elegant!
What do you think?

Hi Vinod R,
Thanks for you very comprehensive answer!
Did you know that Hanna Reitsch, Hitler's favourite Test Pilot once flew a V-1?
This was a bit of a "dodgy" process:because if you baled-out then you were sucked into the air-intake!
Not a pleasant thought!

Answer 1

good question and some very good answers

Answer 2

Indirectly. The super surveillance jet, the Black Bird used an engine that had bypass tubes to go around the compressor section so the afterburner behaved as a Ram Jet at supersonic speeds. Some of the missiles built to fly on wings between WWII and now which were launched with rocket boosters used ram jets but at a time when not many were needed.

Answer 3

A pulse jet engine (or pulsejet) is a very simple form of internal combustion engine wherein the combustion occurs in pulses and the propulsive effort is a jet; a reaction to the rearward flow of hot gases.

A typical pulsejet comprises an air intake fitted with a one-way valve, a combustion chamber, and an acoustically resonant exhaust pipe. The valving is accomplished though the use of reed valves or, in a valveless pulse jet engine, through aerodynamics. Fuel in the form of a gas or liquid aerosol is either mixed with the air in the intake or injected into the combustion chamber. Once the engine is running it requires only an input of fuel, but it usually requires forced air and an ignition method for the fuel-air mix. Once running, the engine is self-sustaining.
The principal military use of the pulsejet engine was in the V-1 flying bomb, the engine's characteristic droning noise earning it the nicknames "buzz bomb" or "doodlebug". The V-1 was a German cruise missile used in World War II, most famously in the bombing of London in 1944. Pulsejet engines, being cheap and easy to construct, were the obvious choice for the V-1's designers given the Germans' materials shortages and over-stretched industry at that stage of the war. Modern cruise missiles do not generally use pulsejet engines but true rocket or gas turbine engines.
There are two basic types of pulsejets. The first is known as a valved or traditional pulsejet and it has a set of one-way valves through which the incoming air passes.
The second type of pulsejet is known as the valveless pulsejet. This name is really a misnomer. These engines have no mechanical valves, but they do have aerodynamic valves, which, for the most part, restrict the flow of gases to a single direction just as their mechanical counterparts. Indeed they have no mechanically moving parts at all and in that respect they are similar to a ramjet.

Pulse jets survive today in target drone aircraft9eg Indian Army's Lakshya PTA), flying model aircraft, fog generators and home heating equipment. Some experimenters continue to work on improved designs. The engines are difficult to integrate into manned aircraft design due to high fuel consumption, noise, and vibration.

The Pulse detonation engine (PDE) marks a new approach towards non-continuous jet engines and promises higher fuel efficiency compared even to turbofan jet engines. Pratt & Whitney and General Electric now have active PDE research programs.

Answer 4

The most successful postwar application of the ram jet was in the long-range anti-aircraft nuclear missile called the Bomarc. Read about it here: http://www.boeing.com/history/boeing/bomarc.html

They were retired in 1971.

The pulse jet has been mostly used in target drones and model aircraft since the V-1. A derivative pulse-detonation propulsion system has been experimental for several decades, and is allegedly in use by the USAF's semi-mythical Aurora spyplane.

Answer 5

If you search on the internet I'll bet you could come up with a set of plans for making your own. Popular Science and Popular Mechanics magazines used to include plans for building your own pulse jet every once in a while, but I havent seen any for a long time now.

Answer 6

Yes, a jet engine with an afterburner is a turboramjet.

Answer 7

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Answer 8

See the Scud missiles

Answer 9

I don't know !