Showing posts with label air. Show all posts
Showing posts with label air. Show all posts

Wednesday, August 10, 2022

The Chinese claim that they made successful tests with RDE (Rotating Detonation Engine)

 


Image: X-59 QueSST ("Quiet SuperSonic Technology"). That technology is also making hypersonic aircraft noise lower. The X-59 itself is not hypersonic. But it also gives information that can benefit hypersonic aircraft. 

RDE (Rotating Detonation Engine) is one of the most brilliant ideas of hypersonic aviation. The idea is that the detonation or firefront travels on the wall of the combustion chamber. The combustion chamber can be like the barrel of a rifled rifle. The air-fuel mixture will inject into that chamber where friction can ignite it. 

There is the possibility that the combustion chamber walls will be heated by using electrical resistant components. And that means the fuel-air mixture can ignite at a lower speed. The active warming system can get its power from the air generator. 

There is the possibility that the turbojet engine will get screw-shaped rifling in its combustion chamber along with the entire internal structure. So that the system can drive exhaust gases backward in whirl-looking form. If the system can lock the engine compressors wings. The regular-looking turbo-jet can transform into a hypersonic jet. The high fly altitude can make controlling the power of airflow easier. 

The thing that makes this engine type interesting is that it can install around the turbo-jet engine. Or the "onion-shaped engine can" have three stages. But if the fuel-air mixture can ignite in lower temperatures there is the possibility that the system can accelerate to speed where this engine can start by using a regular turbojet. 





So the model of this system could be: 


0= Ramjet engines. 


1=Outer core of the engine.

2=RDF-engine

3=Turbojet

2=RDF-engine

1=Outer core of the engine.


0= Ramjet engines.


Ramjets are needed only if the fuel-air mixture cannot ignite. Regular scramjets require a speed of about Mach 6 or Mach 7 to start. And in other models, the ramjets are accelerating the aircraft to a speed where scramjets can start. The aircraft uses turbojets for lift-off and landing and then other engine types are flying aircraft to extremely high speed. 

The turbojet might have a vizier that limits its rotation speed. That system is required for energy delivered to the aircraft. But active warming system in RDE makes it possible, that the system can ignite fuel in lower temperatures and it can use an electric arc for ignition. The RDE will accelerate its exhaust gas to hypersonic speed. And that engine is one of the most fundamental systems in the world. 


https://aerospaceamerica.aiaa.org/year-in-review/plasma-measurement-and-hypersonic-flight-testing-among-developments/


https://eurasiantimes.com/chinese-firm-claims-breakthrough-in-novel-engine-tech/


https://en.wikipedia.org/wiki/Lockheed_Martin_X-59_QueSST


https://en.wikipedia.org/wiki/Ramjet


https://en.wikipedia.org/wiki/Rotating_detonation_engine


https://en.wikipedia.org/wiki/Scramjet


https://en.wikipedia.org/wiki/Turbojet


The image on the top:)  https://aerospaceamerica.aiaa.org/year-in-review/plasma-measurement-and-hypersonic-flight-testing-among-developments/


https://designandinnovationtales.blogspot.com/

Wednesday, May 30, 2018

The secrets of ancient flying machines


Picture I

Kimmo Huosionmaa

We all who are been interesting about secrets, UFO:s, ancient civilizations, and technology have heard the stories about ancient flying machines and levitation, what might seem incredible. But at the same time we usually forget, that this kind of systems were miracles in that time, and when we are thinking the ancient levitation machines, we must realize, that Chinese have been invented warm air balloon before year zero, and when we are thinking about heavier-than-air solutions, we must say that those devices are needed only the warm air under the body. The ancient Indians might also know that the parachutes can also be used for rising the craft from the ground.


There is only need to make the fire under that device, and then the parachute can raise the device from the ground by the rising air. But there is another way to raise the vehicle from the ground, and that uses volcanic heat in those machines. The volcanic heat can raise even the big device from the ground because the device can be over the heating point long period, and then the heated air would be collected under this device. The French inventors called Montgolfier brothers used this technology in their first warm air balloon, what was introduced for King Ludwig XIV in the year 1734.


The fire was made under the warm air balloon, and then that device was raised from the ground in the front of the Solar King and his court. The idea of this flight might come from some writings of ancient civilizations. And in here I must say that digging the cave under the device, there would be change to make very much warm air for those flying machines. And the levitation can also be made by using acetylene flame, what can be burned inside those balloons. The temperature of that flame is 3500 degrees Celsius, and that could make those devices rise with very high speed.


Maybe later in the modern time, some inventors tried to use electric arcs in them, but in the modern times the microwaves can be targeted to that kind of devices, and the microwave transmitters can be used from the ground. And in this imagination device the flying device would sit on the microwave transmitter, and then the heated air would pull the device to the skies. This kind of devices could be aviation of tomorrow. But this is only the speculation.

Sources:

Watch "Vimana: 6000 Years Old Levitation Machines of Ancient India - Lost History" on YouTube https://youtu.be/ZLhvac4asUY

http://pocketcultures.com/2011/11/23/hot-air-balloons-a-french-invention/

Montgoflier-brothers https://en.wikipedia.org/wiki/Montgolfier_brothers

Picture I
https://www.siempreenlasnubes.com/wp-content/uploads/2013/10/Vuelo-Historioco-globo.2.jpg

https://pimeakronikka.blogspot.com/

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