MPPA Ground School
Part 3
Turning, Taxiing, Taking Off and the Flight Pattern

 

There are those who believe that flying a model aircraft is more difficult than a full scale. Visualizing yourself from the aircraft view takes some practice. It's like an out of cockpit experience. Everything is fine so long as you are coming towards yourself, is a whole different story. Think of it as sitting backwards on the dashboard of your car steering wheel between your legs, and driving down the road. Here's a reference list to help you along.
 
Aircraft Direction
Control Movement
Aircraft Reaction
Aircraft Going Away
Aileron
Same
Elevator
Same
Rudder
Same
Coming Towards You
Aileron
Reversed
Elevator
Same
Rudder
Reversed
Inverted Going Away
Aileron
Same
Elevator
Reversed
Rudder
Reversed
Inverted Coming Towards You
Aileron
Reversed
Elevator
Reversed
Rudder
Same
You will soon find, however, that after a little practice, you don't think much about which control does what, or even which direction to turn.  Like riding a bicycle, it all becomes "second nature", and you'll do it without thinking about it.  But you'll need to practice, practice, practice.
 
Flight Pattern:
The FP, or traffic pattern, is made up of four legs. Starting at the runway, the aircraft takes off as directly into the wind as possible.  If the wind direction is described as "East" or "Easterly", that means it is coming from the East and blowing toward the West.  If the wind is from the East, you take off and land, if possible, with the aircraft pointing toward the East.  
  field.gif - 5.3 K
The part of the flight pattern off the departure end of the runway is called the "upwind leg".  The first 90 degree turn is the "crosswind leg". The second 90 degree turn results in the aircraft flying away from the wind direction, and so it is called the "downwind leg".   The third turn is the "base leg".  It is this leg where the aircraft sets up for entering the "final approach".  Usually the word "leg" is dropped, and each part of the pattern is called simply by its one-word name, i.e.,  "upwind", "crosswind", "downwind", "base" and "final".    
 
Shout A Warning
Always announce your intentions when it involves use of the runway such as "Taxiing on the Runway!", "Taking Off!", "Touch and Go!" and "Landing!".  Be sure to listen for other pilots doing the same.  Also, announce each time you yourself are entering the runway by saying "Man On the Runway!" or simply "On the Runway!" and make sure it is safe before you step onto it.  Because pilots cannot watch you, be sure to announce "Clear of the Runway" or simply "Clear!" when you are no longer on it.  Remember, a pilot may need the runway quickly if a plane loses engine power (called a "dead stick").  
 
Takeoff
Before takeoff, don't spend a lot of time taxiing around on the runway... find another place, like an empty parking lot, to practice your taxiing skills until you're confident.  You should not taxi or takeoff if you do not have complete confidence in your ability to control your aircraft.  An aircraft that is out-of-control is a serious hazard to life and health.  If you have any doubt about any aspect of your aircraft or flying, ask for help!  If you are having problems with your aircraft, and takeoff is doubtful, taxi into the grass just outside the edge of the runway, preferably a safe distance away from any persons.  Remember, the runway must be shared and may be needed in a flight emergency.  
 
After takeoff, as you climb into the upwind, make sure you have gained enough altitude quickly enough to clear any obstacles such as trees, fences or poles, or turn away from them.  Turn downwind when you are at an appropriate distance. . Remember, at Markham Park, you must turn toward the North after takeoff.  Never fly your aircraft South of the runway!   
 
Air Traffic
The pattern depicted is only a "recommended" practice, and is the "default" pattern (the diagram shows wind from the East... the direction of flight would be reversed for a West wind.  This flight pattern is not an "enforceable" procedure, and some aircraft may be flying opposite to the pattern, or not following any type of pattern.  Luckily, at Markham Park the sky is an extremely big space, and although it does occur sometimes, mid-air collisions are fairly rare.  First and foremost, you must concentrate and have a continuous awareness of your plane's location in the sky, and the "attitude" of the plane (that is, which way it is pointed, and whether it is right-side-up or upside-down).  If you feel you need to take an evasive measure, and you can do so safely, then you are certainly free to do so.  But it would be best not to allow yourself to be so fearful that you cannot maintain your composure.  Panic is your enemy, and makes it much more likely that you will make a mistake, or be unable to recover from an unexpected event.  
 
   

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