On Fri, 25 Aug 2017 10:44:15 -0400, avlWst?? ?????? ? ??????? ??UXuJNF
wrote:
Ed Huntress wrote on 8/25/2017 9:52 AM:
On Fri, 25 Aug 2017 13:12:52 +0000 (UTC), Cydrome Leader
wrote:
Ed Huntress wrote:
On Fri, 25 Aug 2017 01:25:01 +0000 (UTC), Cydrome Leader
wrote:
Ed Huntress wrote:
On Thu, 24 Aug 2017 19:44:42 -0400, EBsoZZ?? ?????? ? ??????? ??TeRcSC
wrote:
Ed Huntress wrote on 8/24/2017 6:42 PM:
If you're interested in this story, it may be in print somewhere, but
it's also in this podcast that you can listen to online, with no
add-on apps:
https://www.nytimes.com/2017/08/24/p...s-ukraine.html
Hint: They didn't do it themselves.
It is very easy to make a rocket. The difficult part is the flight
control unit that keeps the rocket flying straight and narrow instead of
going in random directions after liftoff and crashing back to earth near
the launchpad.
A modern smartphone has all the sensors required to let the rocket
correct its course and guide itself to its destination.
All you need to do is write an App and send the output to an interface
to control the power of each of the three nozzles (a rocket as no wings
or rudder, so a minimum of three nozzles would be needed to make the
rocket go in any direction you want it to).
North Korea makes smartphones:
http://www.telegraph.co.uk/news/worldnews/asia/northkorea/10238617/Kim-Jong-un-visits-North-Korean-smartphone-factory.html
Download this Android App (Sensors Multitool) to read the sensors:
https://play.google.com/store/apps/details?id=com.wered.sensorsmultitool&hl=en
This "Sensors Multitool" App can read all the sensors in your Android
smartphone (everything you need to guide a missile to its destination):
GPS
Rotation Vector
Linear Acceleration
Gravity
Gyroscope
Accelerometer
Magnetic
Pressure
Orientation
The story is about the engines. N. Korea couldn't get a mid-range
rocket to fire reliably. All of a sudden, they're building ICBMs that
work.
The analysts recently realized why. The engines are Cold-War-Era
Russian -- possibly made in the old Russian heavy-engine factory in
the Ukraine.
I think you mean mean russia, not ukraine.
The factory is a holdover from the Sobiet days. It's in Ukraine.
there is no ukraine, just russia.
We must have different world maps.
But they say they're not making engines for N. Korea. The CIA probably
knows the answer to this, but it could be that Russian engineers or
unemployed Ukranians are helping N.Korea to build them.
The key point was in realizing what was new about their program. In
roughly one year, they made progress that is widely thought to have
been impossible, or nearly so.
Launching a rocket into the ocean isn't really that impressive, unless
you're trying to catch up with the 1960s.
Launching one to an altitude of 2,300 miles is very impressive. Angle
the trajectory down, and most US cities are in range.
Did you follow the analyses of the launch data? The rocket experts say
the last one is a game changer.
North korea is a joke, but at least they'd put up a fight if the russians
walked over and said "this is ours now."
Security experts are focused on other issues regarding North Korea.
Kim Jong-Un doesn't need to buy old rockets from Ukraine. Rocket engine
schematic diagrams are readily available on the internet.
RS-25 schematic:
https://en.wikipedia.org/wiki/Space_Shuttle_main_engine#/media/File:Ssme_schematic_(updated).svg
As I said before, you need at least three nozzles so that you can make
the rocket go whatever direction you want it to go (by adjusting the
power of each individual nozzle):
https://en.wikipedia.org/wiki/Space_Shuttle_main_engine#/media/File:020408_STS110_Atlantis_launch.jpg
North Korea's Kim Jong-Un and his rocket scientists had the smarts to
assemble their own rocket engine from Home Depot parts, and use the
sensors in a smartphone for the guidance system.
You seem to have a cartoonish view of engineering, a lot like the
cartoon drawing you linked to above.
The most fundamental problem with your "analysis" is that they DIDN'T
have the smarts to build even reliable shorter-range rockets, until,
quite suddenly, they had success with much larger and longer-range
rockets. Intelligence services were scratching their heads.
But Kim Jong Un's egotism led him to have photos of the new engines
published, and US intelligence analysts quickly realized they're now
using Russian-designed engines from the Cold War era. Those engines
were originally made in the Ukraine.
You would know all of this if you listened to the podcast instead of
speculating about cartoon drawings and Home Depot.
--
Ed Huntress