How do ramjets produce thrust?

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In summary, a ramjet engine uses the forward motion of an aircraft to compress air and mix it with fuel to create hot, high-pressure gases. This differs from traditional jet engines, which use a turbine to compress air. Ramjets are most efficient at high speeds and can operate at speeds up to Mach 6. They maintain combustion without a compressor by using the forward motion of the aircraft. However, they are not suitable for space travel as they require air for combustion. Other engines, like rockets, are better suited for that purpose.
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Aeronautic Freek
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against what pressure produce thrust in ramjet if it is just hollow tube?
 
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Ramjets can only operate at relatively high air speeds. The incoming air is compressed by a constricted mouth. Without that pressure, there is nothing to stop the exhaust from going out both ends.

So the short answer to your question is: the incoming air is compressed, raising the pressure, and acts as a barrier for the exhaust, causing it to only vent aft.

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Related to How do ramjets produce thrust?

1. How do ramjets work?

Ramjets work by using the forward motion of the aircraft to compress incoming air, which is then mixed with fuel and ignited to produce hot, high-speed exhaust that creates thrust.

2. How does a ramjet differ from a traditional jet engine?

A traditional jet engine uses a compressor to compress air before it enters the combustion chamber, while a ramjet relies on the forward motion of the aircraft to compress air.

3. What is the speed range for ramjets to operate efficiently?

Ramjets are most efficient at supersonic speeds, typically between Mach 2 and Mach 6.

4. How do ramjets handle changes in altitude?

Unlike traditional jet engines, ramjets do not have moving parts to adjust the amount of air entering the combustion chamber. As a result, they are not able to operate efficiently at varying altitudes and are typically used at high altitudes where air density is consistent.

5. What are the advantages of using ramjets?

Ramjets are simpler in design compared to traditional jet engines, which makes them lighter and more reliable. They also have a higher thrust-to-weight ratio, making them ideal for high-speed flight.

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