- Reverse-engineering a three-axis attitude indicator from the F-4 fighter plane (righto.com)
We recently received an attitude indicator for the F-4 fighter plane, an instrument that uses a rotating ball to show the aircraft’s orientation and direction. In a normal aircraft, the artificial horizon shows the orientation in two axes (pitch and roll), but the F-4 indicator uses a rotating ball to show the orientation in three axes, adding azimuth (yaw).1 It wasn’t obvious to me how the ball could rotate in three axes: how could it turn in every direction and still remain attached to the instrument?
- Robert F. Kennedy (Wikipedia)
Robert Francis Kennedy (November 20, 1925 – June 6, 1968), also known as RFK, was an American politician and lawyer. He served as the 64th United States attorney general from January 1961 to September 1964, and as a U.S. senator from New York from January 1965 until his assassination in June 1968, when he was running for the Democratic presidential nomination. Like his brothers John F. Kennedy and Ted Kennedy, he was a prominent member of the Democratic Party and is considered an icon of modern American liberalism.