SL Helicopter Flying Handbook/Navigation - Revision history

Kelly: /* Dead Reckoning */

2022-06-01T16:28:13Z

‎Dead Reckoning

Kelly: /* Dead Reckoning */

2022-06-01T16:10:05Z

‎Dead Reckoning

Kelly: /* Dead Reckoning */

2022-06-01T15:09:26Z

‎Dead Reckoning

Kelly: /* Dead Reckoning */

2022-06-01T03:54:37Z

‎Dead Reckoning

Kelly: /* Dead Reckoning */

2022-06-01T03:53:31Z

‎Dead Reckoning

Kelly: /* Dead Reckoning */

2022-06-01T03:38:05Z

‎Dead Reckoning

Kelly: /* Dead Reckoning */

2022-06-01T02:58:20Z

‎Dead Reckoning

Kelly: /* Dead Reckoning */

2022-06-01T02:57:19Z

‎Dead Reckoning

Kelly: /* Dead Reckoning */

2022-06-01T02:10:32Z

‎Dead Reckoning

Kelly: /* Pilotage */

2022-06-01T01:26:42Z

‎Pilotage

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 The presence of wind, can make things more complicated (for aircraft that support wind).  When there is a direct tailwind, we can simply add the windspeed to the airspeed to get groundspeed, and when there is a direct headwind, we can simply subtract the airspeed.  In the same example as above, if there is a 10 knot tailwind, then the groundspeed becomes 70 knots, and this the time to cover the 30 km flight would be 30/70 hours or 26 minutes.
 * True Course - The course from a departure fix to a destination fix.
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 * Wind Correction - The difference between the true course and the heading.
-Dead reckoning problems typically revolve around the wind triangle (<xr id='fig:wind-triangle'/>).  The wind triangle shows the relationship among the aircraft heading/airspeed, wind direction/speed, and true course/groundspeed.  The actual path that a pilot takes
+The wind triangle (<xr id='fig:wind-triangle'/>) shows the relationship among the aircraft heading/airspeed, wind direction/speed, and true course/groundspeed.  In the most common case, the pilot knows the desired ground track, the aircrafts airspeed, and the wind direction/speed.  From this, the pilot would like to know the aircraft heading needed to follow that ground track, and the resulting groundspeed.  The key insight is that we can treat wind, airspeed, and groundspeed as vectors and observe that the groundspeed vector is the sum of the windspeed and airspeed vectors as shown in the diagram.
-In the most common case, the pilot knows the desired ground track, the wind speed and direction, and the aircrafts airspeed.  From this, the pilot would like to know the aircraft heading needed to follow that ground track, and the resulting windspeed.
+# Choose a direction on the paper to be North (heading 000), then use a protractor and straight edge to draw a line from a starting point "A" in that direction.  In the example in <xr id='fig:wind-triangle'/>, the true course is 000 degrees.
 ==== GPS Navigation ====

@@ Line 23: / Line 23: @@
 Dead reckoning, in the context of air navigation, is the process of calculating heading, speed and time to travel between fixed points given vehicle speed and wind conditions.  While manual dead reckoning is not a common technique for SL navigation, it is useful for pilots to understand the basics, in particular when flying an aircraft with simulated wind.
-In the no-wind case, a pilot could simply use an aeronautical chart to measure the heading needed to fly from her current location to her destination, then calculate the time required as the distance divided by the airspeed.
+In the no-wind case, a pilot could simply use an aeronautical chart to measure the heading needed to fly from her current location to her destination, then calculate the time required as the distance divided by the airspeed.  For example, to make a 30km flight at an airspeed of 60 kph would require 30 minutes.
-* True Course - The
+The presence of wind, can make things more complicated (for aircraft that support wind).  When there is a direct tailwind, we can simply add the windspeed to the airspeed to get groundspeed, and when there is a direct headwind, we can simply subtract the airspeed.  In the same example as above, if there is a 10 knot tailwind, then the groundspeed becomes 70 knots, and this the time to cover the 30 km flight would be 30/70 hours or 26 minutes.
 Dead reckoning problems typically revolve around the wind triangle (<xr id='fig:wind-triangle'/>).  The wind triangle shows the relationship among the aircraft heading/airspeed, wind direction/speed, and true course/groundspeed.  The actual path that a pilot takes

← Older revision		Revision as of 15:09, 1 June 2022
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	Dead reckoning, in the context of air navigation, is the process of calculating heading, speed and time to travel between fixed points given vehicle speed and wind conditions. While manual dead reckoning is not a common technique for SL navigation, it is useful for pilots to understand the basics, in particular when flying an aircraft with simulated wind.		Dead reckoning, in the context of air navigation, is the process of calculating heading, speed and time to travel between fixed points given vehicle speed and wind conditions. While manual dead reckoning is not a common technique for SL navigation, it is useful for pilots to understand the basics, in particular when flying an aircraft with simulated wind.
		+
		+	In the no-wind case, a pilot could simply use an aeronautical chart to measure the heading needed to fly from her current location to her destination, then calculate the time required as the distance divided by the airspeed.
		+
		+	* True Course - The

	Dead reckoning problems typically revolve around the wind triangle (<xr id='fig:wind-triangle'/>). The wind triangle shows the relationship among the aircraft heading/airspeed, wind direction/speed, and true course/groundspeed. The actual path that a pilot takes		Dead reckoning problems typically revolve around the wind triangle (<xr id='fig:wind-triangle'/>). The wind triangle shows the relationship among the aircraft heading/airspeed, wind direction/speed, and true course/groundspeed. The actual path that a pilot takes

@@ Line 25: / Line 25: @@
 Dead reckoning problems typically revolve around the wind triangle (<xr id='fig:wind-triangle'/>).  The wind triangle shows the relationship among the aircraft heading/airspeed, wind direction/speed, and true course/groundspeed.  The actual path that a pilot takes
-  In the most common case, the pilot knows the desired ground track, the wind speed and direction, and the aircrafts airspeed.  From this, the pilot would like to know the aircraft heading needed to follow that ground track, and the resulting windspeed.
+In the most common case, the pilot knows the desired ground track, the wind speed and direction, and the aircrafts airspeed.  From this, the pilot would like to know the aircraft heading needed to follow that ground track, and the resulting windspeed.
 ==== GPS Navigation ====

@@ Line 23: / Line 23: @@
 Dead reckoning, in the context of air navigation, is the process of calculating heading, speed and time to travel between fixed points given vehicle speed and wind conditions.  While manual dead reckoning is not a common technique for SL navigation, it is useful for pilots to understand the basics, in particular when flying an aircraft with simulated wind.
-Dead reckoning problems typically revolve around the wind triangle (<xr id='fig:wind-triangle'/>).  The wind triangle shows the relationship among the aircraft heading/airspeed, wind direction/speed, and true course/groundspeed.
+Dead reckoning problems typically revolve around the wind triangle (<xr id='fig:wind-triangle'/>).  The wind triangle shows the relationship among the aircraft heading/airspeed, wind direction/speed, and true course/groundspeed.  The actual path that a pilot takes
 ==== GPS Navigation ====

@@ Line 21: / Line 21: @@
 <figure id="fig:wind-triangle"><caption>Wind Triangle</caption></figure>]]
-Dead Reckoning is the process of calculating heading, speed and time to travel between fixed points given vehicle speed and wind conditions.  While dead reckoning is not a common technique for SL navigation, it is useful for pilots to understand the basics, in particular when flying an aircraft with simulated wind.
+Dead reckoning, in the context of air navigation, is the process of calculating heading, speed and time to travel between fixed points given vehicle speed and wind conditions.  While manual dead reckoning is not a common technique for SL navigation, it is useful for pilots to understand the basics, in particular when flying an aircraft with simulated wind.
 ==== GPS Navigation ====

@@ Line 18: / Line 18: @@
 ===== Dead Reckoning =====
-[[File:Dead-reckoning.png|thumb|right]]
+[[File:Dead-reckoning.png|thumb|right|
 Dead Reckoning is the process of calculating heading, speed and time to travel between fixed points given vehicle speed and wind conditions.  While dead reckoning is not a common technique for SL navigation, it is useful for pilots to understand the basics, in particular when flying an aircraft with simulated wind.

← Older revision		Revision as of 02:57, 1 June 2022
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	===== Dead Reckoning =====		===== Dead Reckoning =====
		+	[[File:Dead-reckoning.png\|thumb\|right]]

	Dead Reckoning is the process of calculating heading, speed and time to travel between fixed points given vehicle speed and wind conditions. While dead reckoning is not a common technique for SL navigation, it is useful for pilots to understand the basics, in particular when flying an aircraft with simulated wind.		Dead Reckoning is the process of calculating heading, speed and time to travel between fixed points given vehicle speed and wind conditions. While dead reckoning is not a common technique for SL navigation, it is useful for pilots to understand the basics, in particular when flying an aircraft with simulated wind.

← Older revision		Revision as of 02:10, 1 June 2022
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	===== Dead Reckoning =====		===== Dead Reckoning =====
		+
		+	Dead Reckoning is the process of calculating heading, speed and time to travel between fixed points given vehicle speed and wind conditions. While dead reckoning is not a common technique for SL navigation, it is useful for pilots to understand the basics, in particular when flying an aircraft with simulated wind.

	==== GPS Navigation ====		==== GPS Navigation ====

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 # Turn left to North at Blake Sea - China
 # Land at Hollywood
 ==== GPS Navigation ====