I think the heart of this display which gets picked up is a vertical gyro which gets placed in the middle of the aircraft rather than an inertial navigation device. The gyro motor and other motors need a high frequency AC supply so commercial and military aircraft supplies are usually 400HZ to maximise weight savings, although i have no idea what soviets used but the principle remains - smaller motors are possible with higher frequency AC. So the 27V DC power supply is driving a dynomotor to create the voltage and high AC frequency needed for the vertical gyro box and slave artificial horizon whereas in the aircraft that would come from the generator. The large box on the left and the top are not connected. On a light aircraft the vertical gyro would be inside the same cockpit mounted display as the artificial horizon display because it is not subjected to the same acceleration errors as a larger or faster aircraft. Still impressed it is all working though!
I am reading from the comment it had a high-contrast vintage generator but it does not mean it required more power different than the generator and it requires less of power when you are in a working area.
The sensor of your iPhone is not certified for aerospace applications, please do not use it for this, you can cause yourself serious damage. And if without jokes .. It is not known how adequately the iPhone sensor behaves in conditions of various overloads
Awesome! Thanks for sharing with us. You don’t see just anyone with that setup lying around, let alone fired up. Would you be willing to share the pinouts for these units? I have the same gyro and gauge sitting on a shelf at home and would love to get it going.
Did you manage to get the pinouts? Also have the same units, separately both the gyro block and 'display instrument' is running fine, but did not have the time yet to wire the two together and run them in the original configuration :)
This is not an INS. An INS calculates the airplanes position from available, local, sensor data. It would enable you to switch from waypoint 1 to waypoint 2 and simply follow the indicated course on your instruments. The MiG-21 did not have an analogue computer available for this application.
These older Soviet aircraft where also equipped with gravity guided navigation indicators that worked without any power. However, those instruments had a lag of about 0.4 seconds.
Looks more like attitude gyro than actual INS. Does it measures any actual acceleration, or just keeps track of attitude? I don't think that MiG-21 could keep position with use of INS.
Wow, I really love the mechanics of gyroscopes. It’s so wonderful to see something function with such precision and through all that motion it still returns back to the original position without any alteration. So if you leave this running without moving anything on the table top for several hours and the system doesn’t show any change of position then it makes a profound statement about the Earth that we live on….we cannot be living on a globe flying around in space at thousands of miles per hour spinning on it’s axis and around the sun. The gyroscope does not care what is moving it does not care if it’s mounted to a car or mounted to an airplane or sitting on a moving planet it will show all motion. Gyroscopes just do not lie and as many people don’t even realize many great scientist in recent past even admitted that we could not prove that the earth was in motion and that’s because they knew that we were not in motion.
Airplane gyroscopes have a pendulum that uncovers air vanes when the gyroscope starts to precess, this in turns slowly correct the gyroscope to the gravitational vector, aka to the center of the earth. But please do take a scientific gyroscope and go on a plane, it will absolutely start to tilt when you are going around the curvature of the earth.
The unit that is moved by hand (type 458 gyro block) is a quite sophisticated unit. Sensing units which are very similar like a mercury switch are mounted on the gyro motor directly. If there is any error in the correct vertical position of the shaft of the gyro motor these sensing elements will activate called "torque motors" on the gimbals to correct the position of the shaft of the gyro motor to vertical again.
Rofl what? if it was a pure gyroscope it would absolutely keep it's original orientation. If that were the case the gyroscope would indeed go around a full turn when you fly around the earth (and this has indeed been done, it's one of the more simple ways to show that the earth is indeed a globe). However, no airplane gyroscope is a pure gyroscope, friction would make it very inaccurate over time. Airplane gyroscopes have a pendulum that uncovers air vanes when the gyroscope starts to precess, this in turns slowly correct the gyroscope to the gravitational vector, aka to the center of the earth.
It is nice to see it working, all your parts seem to be in very good condition, too.
I think the heart of this display which gets picked up is a vertical gyro which gets placed in the middle of the aircraft rather than an inertial navigation device. The gyro motor and other motors need a high frequency AC supply so commercial and military aircraft supplies are usually 400HZ to maximise weight savings, although i have no idea what soviets used but the principle remains - smaller motors are possible with higher frequency AC. So the 27V DC power supply is driving a dynomotor to create the voltage and high AC frequency needed for the vertical gyro box and slave artificial horizon whereas in the aircraft that would come from the generator. The large box on the left and the top are not connected. On a light aircraft the vertical gyro would be inside the same cockpit mounted display as the artificial horizon display because it is not subjected to the same acceleration errors as a larger or faster aircraft. Still impressed it is all working though!
Mig21 uses 115 V AC 400Hz and 36 V AC 3 phase
This is such a nice setup and demonstration! :)
2:46: "NYKOLAI! STOP JERKING THE DAMM PLANE!"
I am reading from the comment it had a high-contrast vintage generator but it does not mean it required more power different than the generator and it requires less of power when you are in a working area.
Nice to watch thanks for sharing. Russian equipment is very rugged,simple and reliable.
Wonderful! Well done demonstration! Thank you.
i wonder how accurate a nowadays cellphone sensor can keep compared to this! pretty nice
The sensor of your iPhone is not certified for aerospace applications, please do not use it for this, you can cause yourself serious damage.
And if without jokes .. It is not known how adequately the iPhone sensor behaves in conditions of various overloads
Would be also nice to see the KB-2HM + KPP-K running! :)
I love your hobbie with inertial navigation system's
Awesome! Thanks for sharing with us. You don’t see just anyone with that setup lying around, let alone fired up. Would you be willing to share the pinouts for these units? I have the same gyro and gauge sitting on a shelf at home and would love to get it going.
Did you manage to get the pinouts? Also have the same units, separately both the gyro block and 'display instrument' is running fine, but did not have the time yet to wire the two together and run them in the original configuration :)
@@mthomson51 I've combined up the pin to pin connection of the two units in a Excel sheet with some comments. How can i forward it to you?
@@barjan82 Hi, can i get that pinout please?
This is not an INS. An INS calculates the airplanes position from available, local, sensor data. It would enable you to switch from waypoint 1 to waypoint 2 and simply follow the indicated course on your instruments. The MiG-21 did not have an analogue computer available for this application.
Yea you right definitely the gyros tho. They just need to put an accelerometer and a moving map or something then they got it rite??
Amazing !
Now that's what I call setting the table for dinner!!
Fantastic ! Thanks for this post.
nice video... I think to develop such device we need core technical knowledge
Are we just going to ignore the fact that this guy has a mig21 navigation system in his living room
These older Soviet aircraft where also equipped with gravity guided navigation indicators that worked without any power. However, those instruments had a lag of about 0.4 seconds.
It's called an attitude indicator or artificial horizon, not a navigation system.
The artificial horizon is the instrument that displays information from the INS.
Zombie Woof, no.
Yes, it is called in the west ADI (attitude director indicator), in Russian is KPP
Looks more like attitude gyro than actual INS. Does it measures any actual acceleration, or just keeps track of attitude? I don't think that MiG-21 could keep position with use of INS.
The response of this system is better than any digital system nowadays
It sounds like DCS 😮
Fantastic
nice
Very nice.
Awesome
It seems to sense and to show pitch and roll, but not yaw?
sweeeeeet
The dynamotor is noisier than the inertial platform.
It's like running a vacuum cleaner non stop :) That's why running these stuff at home "room friendly" requires a static inverter.
Hectic aye!
Wow, I really love the mechanics of gyroscopes. It’s so wonderful to see something function with such precision and through all that motion it still returns back to the original position without any alteration. So if you leave this running without moving anything on the table top for several hours and the system doesn’t show any change of position then it makes a profound statement about the Earth that we live on….we cannot be living on a globe flying around in space at thousands of miles per hour spinning on it’s axis and around the sun. The gyroscope does not care what is moving it does not care if it’s mounted to a car or mounted to an airplane or sitting on a moving planet it will show all motion. Gyroscopes just do not lie and as many people don’t even realize many great scientist in recent past even admitted that we could not prove that the earth was in motion and that’s because they knew that we were not in motion.
15 degrees per hour. ..verifiable. . lol
Airplane gyroscopes have a pendulum that uncovers air vanes when the gyroscope starts to precess, this in turns slowly correct the gyroscope to the gravitational vector, aka to the center of the earth.
But please do take a scientific gyroscope and go on a plane, it will absolutely start to tilt when you are going around the curvature of the earth.
como voce conseguiu estas peças ?
wow! so that how airplane's gyro works.
Interesting...te giroscope of Artificial Horizon is external
nice!
This is more s gyro than a nav though..
How does it manage to get rid of the gyro drift?
The unit that is moved by hand (type 458 gyro block) is a quite sophisticated unit. Sensing units which are very similar like a mercury switch are mounted on the gyro motor directly. If there is any error in the correct vertical position of the shaft of the gyro motor these sensing elements will activate called "torque motors" on the gimbals to correct the position of the shaft of the gyro motor to vertical again.
@@MonkeySci That would be true if it was an INS, but it isn't. It's just a gyroscope. MiG-21 was never equipped with INS.
explain something it will increase your subscription with well written script
I have an old gyro and I'd love to identify it..
It is 3am, TH-cam recommendation,
3 F16 pilot dislike it.
The elephant in the room, no automatic compensation for presesion due earth curvature. Quite revealing!
Earth has no curvature
Rofl what? if it was a pure gyroscope it would absolutely keep it's original orientation. If that were the case the gyroscope would indeed go around a full turn when you fly around the earth (and this has indeed been done, it's one of the more simple ways to show that the earth is indeed a globe). However, no airplane gyroscope is a pure gyroscope, friction would make it very inaccurate over time. Airplane gyroscopes have a pendulum that uncovers air vanes when the gyroscope starts to precess, this in turns slowly correct the gyroscope to the gravitational vector, aka to the center of the earth.
Amazing!