Bearings can be measured in mils, points, or degrees. For example, an object relative bearing of 0 degrees would be immediately in front an object relative bearing 180 degrees would be behind.

Relative bearing refers to the angle between the craft's forward direction ( heading) and the location of another object.For example, an object to due east would have an absolute bearing of 90 degrees. Absolute bearing refers to the angle between the magnetic north ( magnetic bearing) or true north ( true bearing) and an object.The angle value can be specified in various angular units, such as degrees, mils, or grad. In navigation, bearing or azimuth is the horizontal angle between the direction of an object and north or another object. Hope this helps.A standard Brunton compass, used commonly by geologists and surveyors to obtain a bearing in the field (sorry cant fint the key map on this computer)Īs before but dont put anything in for the facility ans = 189nm SqRt of a/c height + SqRt of Facility height x 1.25 A/C is on a Compass heading of 270.therefore you need to apply the CDMVT mnemonic or simply Cadburys Dairy Milk Very Tasty (Compass-Deviation-Magnetic-Variation-True) to get your true heading.įrom this you take away the 44° for your answer! Best bet with these sorts is to draw them out!! NDB is on RB of 316° (44° degrees left of the nose). You need to give us Variation as either East or West (+or-) for this Q. WHAT IS THE MAXIMUM THEORETICAL RANGE THAT AN AIRCRAFT AT FL150 CAN RECEIVE SIGNALS FROM A VOR SITUATED 609 FEET ABOVE MSL?Ī DME STATION IS LOCATED 1000 FEET ABOVE MSL.ĪN AIRCRAFT FLYING AT FL 370 IN ISA CONDITIONS WHICH IS 15 NM AWAY FROM THE DME STATION, WILL HAVE A DME READING OF:Ī/c is directly above the DME and measures slant range. THE MAXIMUM THEORETICAL RANGE AT WHICH AN AIRCRAFT AT FL230 MAY RECEIVE SIGNALS FROM A VOR FACILITY SITED AT MEAN SEA LEVEL IS: IN ISA CONDITIONS, APPROXIMATELY WHAT IS THE MAXIMUM THEORETICAL RANGE AT WHICH AN AIRCRAFT AT FL210 MAY EXPECT TO RECEIVE SIGNALS FROM A VOR FACILITY SITED 340 FEET ABOVE MEAN SEA LEVEL ? IN ISA CONDITIONS, WHAT IS THE MAXIMUM THEORETICAL RANGE AT WHICH AN AIRCRAFT AT FL80 CAN EXPECT TO OBTAIN BEARINGS FROM A GROUND VDF FACILITY SITED 325 FT ABOVE MSL ? THE DME INDICATES APPROXIMATELY:ĪN NDB IS ON A RELATIVE BEARING OF 316° FROM AN AIRCRAFT.ĬALCULATE THE TRUE BEARING OF THE NDB FROM THE AIRCRAFT Hi boyss and girls im having some problems with calculating these here for rad nav cab anyone help out?ĪN AIRCRAFT, AT FL 410 IS PASSING OVERHEAD A DME STATION AT MEAN SEA LEVEL.

Relative bearing and true bearing