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To get the true bearing from a compass (magnetic) bearing you must add the variation (for your location) to the compass bearing.

The supports that are used to hold a rotating shaft in position. Small internal combustion engines such as those used to power model aircraft often use phosphor bronze for the main crank bearings.

bearingless rotor Rotor in which flapping, lead/lag and pitch change movements are provided by the flexibility of the structural material and not by bearings. No rotor is truly rigid.
BERP British Experimental Rotorcraft Programme.

Bearing (BRG).
Direction on a compass; Synonyms: direction; Symbols: B; Typical Units: rad, deg;
Bessel 1841.
A standard model for computing earth data ...

Lower Bearing: No leaks
I find the lower bearing a difficult part to describe a preflight procedure.

Thrust Bearings
Technology / Motors / Thrust Bearings: Special bearings used to handle higher than normal axial forces exerted on the shaft of the motor as is the case with some fan or pump blade mountings. MORE
Enclosures ...

Bearing & Track
Track is where the aircraft is going. Bearing is the direction to or from a feature or navigation aid.
Bearing can also be expressed relative to the nose of the aircraft via the clock code or as a number of degrees.

(See ICAO term HOMING.)
HOMING [ICAO]- The procedure of using the direction-finding equipment of one radio station with the emission of another radio station, where at least one of the stations is mobile, ...

Magnetic bearing to a direction finding beacon
Magnetic bearing from the station
Atmospheric pressure at aerodrome level
Magnetic orientation of runway in use
Reading in feet on an altimeter set to 1013MB ...

in which bearing means:
The horizontal direction to or from any point, usually measured clockwise from true north, magnetic north, or some other reference point through 360 degrees.

Magnetic bearing (MB). The direction to or from a radio transmitting station measured relative to magnetic north.
Magnetic heading (MH). The direction an aircraft is pointed with respect to magnetic north.

(2) HSI VOR bearing pointer will be removed when within the cone
(3) HSI VOR CDI will be removed when in the cone
(4) HSI digital VOR bearing numbers will be removed when in the cone ...

Detail: Load Bearing MountThe weight and torque of the engine are conveyed to the craft's stringer through a transverse steel weldment bolted to the stringers.

For the company bearing the name, see Gyrodyne Company of America.
Gyrodyne Part of a series on
Categories of Aircraft
Lighter than air (aerostats) ...

Radial - Magnetic bearing extending from a VOR
RADAR - Radio Detection and Ranging
RCO - Remote Communications Outlet
Roger - Communications acknowledgement
RNAV - Area Navigation
RTB - Return to Base
RVR - Runway Visual Range ...

A magnetic bearing from a VOR, TACAN, or VORTAC facility, except for facilities in the Northern Domestic Airspace which may be oriented on True or Grid North.

QDR: magnetic bearing from the station.
QFE: atmospheric pressure at aerodrome elevation. With its sub-scale set to the aerodrome QFE an altimeter will indicate height above that airfield.
QFU: magnetic orientation of runway in use.

You are on the 068 bearing, whereas you are supposed to be on the 078 bearing. You must get back on course. For starters, "double the error", in other words you are 10 degrees off course, turn right 20 degrees to a new heading of 100.

The shape of a load-bearing component can be critical. As an example, I sometimes ask people if they believe that a few ounces of low grade aluminum can support my 230 plus pounds.

Navigation, Instruments, and Avionics ADF Automatic Direction Finder - an instrument in an airplane which displays the relative bearing to an NDB (see below) -- it essentially "points at the NDB" AI Attitude Indicator (also known as AH - Artificial ...

The hinge pins are kept in their bearings by the cotter-pins, inserted through the drilled holes in the bottom of the hinge pins.
6. Panel Assembly. The panels are now to be assembled. Before the main panels can be con- ~-.

The trunnion is splined to the mast and has two bearings through which it is secured to the yoke. The blades are mounted to the yoke and are free to teeter (flap) around the trunnion bearings.

If you are not flying by reference to VORs, but rather using GPS to fly from waypoint to waypoint along an airway, do not be surprised if your GPS indicates a bearing that differs from the charted VOR radial for that airway.

You then center the CDI (Course Deviation Indicator) or needle on your OBI (Omni-Bearing Indicator) with a TO reading, and the most direct heading to the station can be read at the top of the instrument, ...

The conditions under which the flight is conducted (hot, bouncy, low ceilings, etc.) have a bearing, but in general, we should set limits with which we are comfortable.

Because ATC is involved in the movement of all commercial airline aircraft, the capabilities and efficiencies of ATC has a direct bearing on the schedule performance of the airlines.

Direction is indicated to the pilot as a magnetic bearing or as a relative bearing to the longitudinal axis of the aircraft depending on the type of indicator installed in the aircraft.

They provide a bearing to and from the NAVAID as well as magnetic direction. Non-directional beacons (NDB) are another from of NAVAID used but these are more so for approaches.

QDR Request magnetic bearing from
QFE Setting on the subscale of the altimeter so that the instrument shows height above the reference elevation being used
QNE The indicated reading on an altimeter when the subscale is set to 1013.2 ...

COMPASS COURSE - A bearing as indicated by the horizontal angle between the compass needle and the centerline of the aircraft. A Compass Course is equal to a True Course variation and deviation; also equal to a Magnetic Course deviation.

Eurocopter AS 350 B3 Tail Rotor Laminated Half-bearings - Inspection/Replacement - effective 05 Oct 2012
AgustaWestland A109, AW109, A119 and AW119 Main Rotor Lag Dampers - Identification/Replacement - effective 12 Oct 2012 ...

The aircraft's position is displayed as a function of its magnetic bearing "to" or "from" the VOR station. Pilots can then track toward or away from the station while monitoring their course along that individual VOR radial.

A few drops of oil should be applied to the hinges periodically and if the aileron is removed for any reason, oil and graphite should be introduced between the hinge pin and its bearing.

An L/MF or UHF radio beacon transmitting nondirectional signals whereby the pilot of an aircraft equipped with direction finding equipment can determine his bearing to or from the radio beacon and "home" on or track to or from the station.

PANTS - A popular word for streamlined, non-load bearing fairings to cover landing wheels. Also sometimes called Spats or, when fully enclosing the wheel struts, Skirts.

Compass Base. A circular area, usually on the edge of an aerodrome, marked with magnetic bearings upon which aircraft may be orientated for the compensation of errors in their compasses.

The main purposes of a washer in aircraft installation are to provide a shim when needed, act as a smooth load bearing surface, and to adjust the position of castle nuts in relation to the drilled hole in a bolt.

RDF - Radio direction finding; using the transmission from two or more stations to fix position of an aircraft by its bearing in relation to each.

RFC - Royal Flying Corps.

Tactical Air Navigation Aid. An ultra-high frequency electronic rho-theta air navigation aid which provides suitably equipped aircraft a continuous indication of bearing and distance to the TACAN station.
Traffic ...

transmitter facility in the navigation system radiating a VHF radio wave modulated by two signals, the relative phases of which are compared, resolved, and displayed by a compatible airborne receiver to give the pilot a direct indication of bearing ...

airplanes that have accumulated a low number of hours over a large number of years very suspect. A sleeping airplane also attracts dust, and dust attracts moisture. An airplane that doesn't move attracts critters, and all of its joints (bearings and ...

The gases produced in the combustion chamber move through the turbine and spin its blades. The turbines of the jet spin around thousands of times. They are fixed on shafts which have several sets of ball-bearing in between them.

Boots - Inflatable device on leading edge of wings and tail. Used to remove ice.
Bracing wire - A solid steel wire used to support the structure of an airplane's wings or fuselage.
BRG - Bearing.
BSU - Beam steering unit.

See also: See also: Aircraft, Flight, Pilot, Direct, Up

Aviation  Beam width  Beaufort scale

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