http://www.navy.mil/management/photodb/photos/070714-N-7981E-061.jpg
070714-N-7981E-061 PACIFIC OCEAN (July 14, 2007) - Sailors assigned to combat systems department inspect repairs made on the gimbal motor of a phase array search antenna for the ship's close-in weapons system aboard Nimitz-class aircraft carrier USS Abraham Lincoln (CVN 72). Lincoln is underway conducting flight deck carrier qualifications off the coast of Southern California. U.S. Navy photo by Mass Communication Specialist 3rd Class James R. Evans (RELEASED
http://en.wikipedia.org/wiki/Saturn_V_Instrument_Unit
Saturn V Instrument Unit
The Saturn V launch vehicle was guided by navigation, guidance, and control equipment located in the IU. A space stabilized platform (the ST-124-M3 at location 21) measured acceleration and attitude. A launch vehicle digital computer (LVDC at location 19) solved guidance equations, and an analog flight control computer (location 16) issued commands to steer the vehicle.
The attitude of the vehicle was defined in terms of three axes:
The roll axis (X) runs from tail to nose and was vertical at time of launch.
The pitch axis (Y) is at right angles to the roll axis, and is marked on the exterior of the IU by +Y above the viewport, outside location 21.
The yaw axis (Z) is at right angles to both the pitch and roll axis, and is marked by +Z outside location 3.[8]
The ST-124-M3 inertial platform contains three gimbals: the outer gimbal (which can rotate 360° about the roll or X axis of the vehicle), the middle gimbal (which can rotate ±45° about the yaw or Z axis of the vehicle), and the inner or inertial gimbal (which can rotate 360° about the pitch or Y axis of the vehicle).
http://en.wikipedia.org/wiki/Saturn_V
The Saturn V (pronounced 'Saturn Five', popularly known as the Moon Rocket) was a multistage liquid-fuel expendable rocket used by NASA's Apollo and Skylab programs.
The largest production model of the Saturn family of rockets, the Saturn V was designed under the direction of Wernher von Braun at the Marshall Space Flight Center in Huntsville, Alabama, with Boeing, North American Aviation, Douglas Aircraft Company, and IBM as the lead contractors. It remains the most powerful launch vehicle ever brought to operational status, from a height, weight and payload standpoint, although the Russian Energia, which flew only two test missions, had slightly more takeoff thrust.
