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This Knowledge Database is a collection of links to websites, videos and papers that support facts like that the earth is a rotating globe, that space and satellites exist, that man landed on the moon and many more.
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Design of the Sperry Mark XIV Gyro-Compass

⇒ videopress.com

The Sperry Mk XIV was a very popular Gyro-Compass of the WWII era, used on thousands of ships. It's proper operation was a matter of life-or-death in this mission critical role.

This old training video explains the key design elements required to build a gyroscope capable of sensing and responding to the rotation of the Earth and using that feedback to align the compass to the North/South rotational axis of the Earth by non-magnetic means.

The most critical elements are a sufficiently massive gyroscope mounted in an extremely low-friction way so it can detect and respond to the very minute precessive forces generated by the rotation of the Earth.

Sperry Gyro-Compass Mark XIV, MOD. I
Service manual for the most widely built gyro of WW II. This gyro was used on pretty much any ship that did not have automated fire control.

Theory Of The Gyrocompass; San Francisco Maritime National Park Association

Non Stop Dallas USA to Sydney Australia, GPS works everywhere

⇒ www.youtube.com

#16 | 12/22/2016 | Author: Wolfie6020 | Type: Youtube | Keywords: GPS, Compass, Flight, Aircraft, Foreflight, FlightAware

I flew back to Australia last night as a passenger with Qantas. I had requested an upper deck window seat and purchased a second GPS and a magnetic compass to conduct more analysis during the flight. I copied the filed flight plan into my Foreflight App so I could follow the route accurately. (If you sign into FlightAware you can see the filed plans for each flight). The magnetic compass is totally unreliable inside the cabin.

Both Bad Elf GPS units worked flawlessly from the USA to Australia. Even in the middle of the Pacific Ocean crossing the Equator.

Magnetic Declination

⇒ www.youtube.com

#223 | 11/26/2021 | Author: crowxe | Type: Youtube | Keywords: Magnetic Declination, Compass, Runway Heading, Airport, Jeppesen Charts

A Compass commonly does not point exactly due north, because earth's magnetic field does not align with the poles nor is it homogeneous. Depending on location we have to add the so called Magnetic Declination angle to the Compass reading to get correct geographic directions. If we do not take magnetic declination into account, we get diverging directions e.g. to the sun compared to astronomical data.

 

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