Showing posts with label jet engines. Show all posts
Showing posts with label jet engines. Show all posts

Saturday, September 16, 2023

Radio transmission is the weak point of modern military drones.

 Radio transmission is the weak point of modern military drones. 


The new British military jet-propelled "Hydra 400"quadcopter is an interesting design. 


The new jet-propelled drone is an interesting design. The jet-propelled quadcopter can fly fast. And it can raise more cargo from the ground than electric engine drones. There is a possibility that these kinds of quadcopters can used as "quad autogyros". 

In those designs, the quadcopters use their quad rotors for lift-off and landing. During a long-distance flight. The drone can use free-rotation propellers and a jet engine. And that thing makes those drones fast. 

Those drones can used as kamikaze drones. Or they can launch missiles like Javelins if they are connected to them. The kamikaze quadcopters are interesting tools because they can observe the area. And if there are no targets those drones can return to base. 

But if there are some kind of targets the drone can make it's surveillance mission and then attack targets when their flight time ends. The drones can use an image-recognition homing system that allows them to take out targets with very high accuracy. 


Above Hydra-drone. 

The military is interested in independently operating drones is that those drones don't require full-time communication between the drone and HQ. The Ukraine war shows how dangerous full-time radio communication is. If the electronic intelligence finds the transmitter, the enemy can turn every cannon against those command centers. So the kamikaze-recon drone can transmit data to the command center and then dive against the target. And that helps to hide the place of the command system. 

The full-time operating radio transmissions are dangerous for drone swarms. The drone swarm where hundreds of members is a suitable target for large anti-aircraft missiles or AA grenades. Similar ELINT systems that are used for track radio transmitters also aim AA cannons at those drone swarms. High-power radio waves can jam the data communication in that drone swarm. 

Those missiles could equipped with a similar homing system as HARM (High-speed Anti Radiation missiles). The HARM-type missiles are also deadly against any radio transmitters. 

Normally HARM is shot from the aircraft. Portable shoulder-launched Stinger missiles also have a so-called "Anti-radiation variant" called Stinger ARM (Anti-Radiation Missiles) that can detect and destroy enemy radiation sources. That makes radio telephones missile magnets if the enemy can track their positions by using radio detectors. 

But there is the possibility that those missiles can be mounted on rocket launchers or warships. Warships can also use those missiles against enemy surface combat unit's radars. And that means the artillery rockets and grenades can have a warhead that can detect radio transmitters. 


https://interestingengineering.com/military/british-army-jet-propelled-drones


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



Friday, March 11, 2022

Researchers uncover the reason for cosmic bubbles near the Milky Way.


Image 1) The cosmic bubbles at both sides of the Milky Way


The reason for cosmic bubbles near Milky Way galaxy is in the radiation of the Sagittarius A the supermassive black hole in the center of our galaxy. When that radiation impacts the gas atoms above and below the Milky Way galaxy that thing causes the emission radiation. The effect is similar to the thing that happens in neutron bombs. 

The radiation effect will push the quantum fields of neutrons inside and load them with energy. When that energy transfer ends neutrons are sending radiation whose wavelength is the same as the diameter of the neutron. 

When radiation hits atoms or their quantum fields they are sending wave movement. Which is similar to neutron radiation. When that reflection radiation hits other atoms. That radiation pushes them away from each other. And this thing forms the cosmic bubble, where are fewer atoms than in other places universe.


https://www.sciencealert.com/giant-bubbles-expanding-from-the-milky-way-could-be-explained-by-a-single-event



Image) https://www.sciencealert.com/giant-bubbles-expanding-from-the-milky-way-could-be-explained-by-a-single-event



Image: Pinterest


What makes this thing interesting. 


If we think the ability to make the electromagnetic field in the air that pushes atoms away from each other we could make the "Jedi effect". The lower pressure that can be made to the wanted direction from the object can be used to move the object. 

Making that kind of low-pressure bubble requires radio- or other electromagnetic radiation. The bubble can create by pointing electromagnetic radiation to the air molecules. And the reflection will push those molecules away from each other. 

If the exhaust gas of the jet engine is driven through the vacuum bubble the speed of exhaust gas increases. And that thing makes it possible to increase the aircraft's speed without using an afterburner.  

The electromagnetic bubble can also use to increase the thrust of jet engines. The idea is that the electromagnetic bubble is made just after the nozzle of the jet or plasma jet engine. And the engine will drive exhaust gas through that vacuum. 

The vacuum behind the jet engine increases the speed of exhaust gas. Because the exhaust gas must travel through a vacuum before they impact with air. That thing can make more speed to the exhaust gas without an afterburner. The vacuum bubble behind the jet engine can form by using microwave or laser systems. And the similar bubble can work with electric- and regular jet engines. 

The thing that makes the electric jet or pulsed plasma turbine (PPT) very suitable for jet fighters is that another aircraft cannot fly behind that engine. The ionized gas protects at least partially the aircraft. Against the missiles that are shot from the back. 


https://thoughtandmachines.blogspot.com/

Sunday, December 3, 2017

Radical aircraft design whatever be more than drawing on the paper.

Artist impression of ""Focke Wulff" "Triebfluger"
(Source: Internet)

Kimmo Huosionma

Focke Wulf  "Triebfluger" was an airplane, what was only existed in the paper. The ”Triebfluger” have been very radical design for the VTOL (Vertical Take-Off and Landing) aircraft, what could change our visions if the aerodynamics. The "Trieblfluger" was inspired one of the greatest ways to operate with the helicopters. Those helicopters could be easier to manufacture, but they will need the jet motors on the edge of the wings of the propeller.

In this ”simpler way” to make flying machines is one thing forgotten, those jet motors will be very complicated to build, and they will suck the kerosine with very fast speed, and that is the reason, why this kind of helicopters would ever build. In this scenario, the helicopters rotor is equipped with jet motors, and the fuel will come from the rotating ventilation in the middle of the rotor.


The reason why that way to build helicopter is very uncommon, is that helicopter will wear very much gasoline, but the inventors of the Focke-Wulff corporation calculated, that design will be easier to produce than normal jet turbine helicopter, what needs very complicated gearwheels, because the speed of the rotor must be decreased in the limits, that this system's structure will stand those G-powers.


This helicopter type what is represented the "Triebfluger" is called as the ”free rotating” helicopters, what are sometimes been on the table of designers. That helicopter is simpler to manufacture, but the motor system is very complicated because the use of the jet motors for rotating the wings. The ventilation system would be very easy to put in the rod of the main rotor, and it is very easy to impose. Or the bond must only be rotating. Another ventilation system might be fixed.

Rockets can also deliver naval mines and torpedoes.

New rocket abilities make them more dangerous. Iran uses rockets to deliver sea mines. That is the new threat to navies. The rocket-delivere...