NASA launched the BOLT-II mission for researching hypersonic flight

The fact is that hypersonic systems are not always big. And they might seem very much about the normal rockets. Hypersonic aerial vehicles can also use conventional rocket engines for reaching hypersonic speed. The BOLT-II is hoped to collect information about the world. That is beyond the supersonic world.  Hypersonic aircraft need new ideas for making operations secure. 

There is a small metal profile in the rocket. And that profile tests what shape is right for a larger hypersonic vehicle. In image 2 you can see how small the BOLT-II is. And there is also an image of that profile that is used as an aerodynamic test unit in that mission. 

Image 2) The bolt II vehicle (Far right and far left) And the carrying rocket (Middle) 

Hypersonic flight causes extreme stress on the aerodynamic control levels. And that's why the problem is how to turn the hypersonic vehicle during its flight in the atmosphere. The solution is how to change the course of the hypersonic vehicle can be the air channel that travels through the aircraft. There are branches in that tube. That begins at the nose of the hypersonic vehicle. 

The ventilation will aim the airflow to the right branch. And that turns the vehicle. The BOLT-II that is launched from Wallops Island. Is a demonstration that hypersonic vehicles are not necessarily large. Even fighter aircraft can carry small-size hypersonic vehicles. Those vehicles can carry small satellites to suborbital or ballistic trajectories. 

Or they can use as missiles. Those small-size hypersonic missiles are effective, especially against ships. But as you know those systems are multi-use. And they can use in many different missions in peace and war. And hypersonic technology is a new and interesting area in aviation. 

https://www.techeblog.com/nasa-bolt-ii-rocket-launch-hypersonic-speed/

https://theconversation.com/the-bolt-ii-hypersonic-flight-test-could-bring-superfast-global-travel-a-step-closer-179556

https://eurasiantimes.com/nasas-successful-launch-of-bolt-ii-can-make-lightning-fast-travel/?amp

Images:

https://www.techeblog.com/nasa-bolt-ii-rocket-launch-hypersonic-speed/

https://theconversation.com/the-bolt-ii-hypersonic-flight-test-could-bring-superfast-global-travel-a-step-closer-179556

Tesla’s electric power for the truck and the use of electricity in heavy-duty transporting

(Picture 1)

Kimmo Huosionmaa

Tesla has made history, and build brand new concept for heavy-duty vehicles. In that vehicle is electric motors for driving the truck forward. Making of the electric truck is nothing that is made with passenger cars. The needed parts are of course bigger, but technology what is used is tested in many smaller vehicles. And the major problem of electricity usage in heavy transport systems is that the battery’s power would go down, and in the short term driving, there would be no time to recharge those batteries.


The electric system is very useful in heavy-duty vehicles because it can give also the trailer capacity to operate as the part of the pulling system. In normal vehicles, the wheels of the trailer are not connected to the motor system, and that makes this kind of heavy-duty vehicles to operate on bad roads. If the trailer’s wheels are used in driving sequences, and they are equipped with motors, that would make the trailer more capacities than before.


There are two ways to make the truck with electric motors. One is to use the pure electric system, but that would need recharge stations. But in this case, the normal power voltage cable could give the needed electricity for that system. Another is to use the diesel-electric system, where the diesel motor would use generators, and the electric power would be transfer to the electric motors, what is installed in every wheel under this vehicle. This would give the car or truck extreme high speed, and the limit of the speed is the endurance of electric motors. That kind of truck can, in theory, leave even sport scars behind them.

The electric driving system can be used selectively. When the batteries are low, the computer would activate the diesel-system. And in the short drive, there could be used only electricity. This means that the tank of the vehicle must not fill at all if there would be found recharge points on the road. In this system is able to use solar panels for increasing the capacity of the battery. Those diesel motors are meant to use only in the forests, where will not found the recharge points. But this kind of vehicles can use also normal power plugs to reload their batteries. So if this project would be the success, the heavy transportation would be more economical and kindly for the environment than ever before.

Sources:

https://electrek.co/guides/tesla-semi/

Picture:

https://dqbasmyouzti2.cloudfront.net/assets/content/cache/made/content/images/articles/Semi_Front_Unveiling_XL_721_420_80_s_c1.jpg

https://crisisofdemocracticstates.blogspot.fi/


http://crisisofdemocracticstates.blogspot.fi/p/teslas-electric-power-for-truck-and-use.html