Using the Line of Position in More Complex Problems: Latitude by meridianal altitude Compass correction Pre-computation Position-finding: the fix. Some of the Theory Behind the Line of Position: The celestial sphere The heavenly bodies Time and the chronometer. Using Lines of Position in Simple Problems: As a check The landfall. Obtaining the Line of Position: Basic ideas Solving for azimuth and intercept Plotting the line of position Classifying lines of position. Section 5: Supplementing Dead-Reckoning by Celestial Observations The Radio Line of Position: The instruments and their use Obtaining the uncorrected radio bearing Converting uncorrected radio bearing to radio line of position The radio fix and log Other radio and communication equipment in the aircraft.Īdditional Radio Aids: Radio range stations Marker beacons. Section 4: Supplementing Dead-Reckoning by Radio Plotting and Labeling LOP's and Fixes: Plot LOP's to be advance as broken lines Plot LOP's establishing a fix as solid lines Labeling LOP's Indicating and labeling fixes.Īircraft Instruments For Measuring Bearings: Driftmeter Compass Astro-compass Radio instruments Celestial instruments Leading or trailing edge of wing, etc.
The Fix: True fix: intersection of two or more simultaneous LOP's Running fix by advancing one or more LOP's Order of taking LOP's for fix course line to advance to speed line Spacing LOP's to get good cut Fix from three LOP's Combining various kinds of LOP's to get a fix. The Line of Position (LOP): Basic idea and examples Kinds of LOP's Types of LOP's Advancing an LOP.īearings: Basic idea and measurement of bearings True, magnetic, and compass bearings Relative bearings Relations between true and relative bearings Reciprocal bearings and LOP's. The Need for Checking Dead-Reckoning: Reliability of dead-reckoning depend upon accuracy of calculations Need for checking dead-reckoning calculations by observations The idea of origins. Section 3: Lines of Position, Bearings, and Fixes Specialized Techniques in Precision Dead-Reckoning: Determination of instrument and installation error Groundspeed by timing Controlled groundspeed Fuel consumption charts Great circle routes Patrol and search Interception Radius of action to same or alternate base. Precision Dead-Reckoning Procedure: Chart work: airplot, ground plot, combinations The log. General Techniques Employed in Precision Dead-Reckoning: Vector solutions Keeping up with altitude Keeping up with heading, airspeed, and air position (keeping the airplot) Keeping up with the effect of the wind Keeping up with track, groundspeed, and ground position (keeping the ground plot) Using the airplot and the ground plot for ETA's, etc. Tools Used in Basic Dead-Reckoning: Lambert conformal chart Map reading Plotting on the Lambert conformal chart Time-speed-distance problems: arithmetic, computer, and table solutions.īasic Dead-Reckoning Techniques: Pre-flight preparation Determination of groundspeed (GS) Calculations of estimated time of arrival (ETA) Correction for off-course.īasic Dead-Reckoning Procedure: Pre-flight procedure Procedure at take-off Keeping station Procedure at check-points Procedure to correct for off-course Procedure at destination Close-out procedure.īasic Ideas and Tools of Precision Dead-Reckoning: Headings (horizontal position) Altitude (vertical position) Airspeed and groundspeed The effect of the wind.Ĭharts For Precision Dead-Reckoning: The Mercator plotting sheet The Lambert conformal and other charts for precision dead-reckoning. It also combines the pages of outlines from each section.īasic Ideas in Dead-Reckoning: The earth The coordinate system of locating points on the earth Direction on the earth Linear distance on the earth. This section has the front and back covers, the title page and introduction. However each section has its own outline of the material covered. The book does not have a table of contents or index. Due to its large size, you can view/download this document in the following separate sections, depending on your interests.įront matter, chapter outlines and back matter This is the complete document except for the fold-out star charts before the inside back cover. To Cite this website as a research source:Īrmy Air Forces Collection, "Air Navigation" (item 000198), AAF Collection, (accessed 28 August 2022).
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