21
motor is turned off. The wing flies through the air as
a result of the thrust and causes lift to overcome the
weight of the aircraft.
Flying is three dimensional, therefore all aircraft
operate on three axes: roll, yaw and pitch. Roll is the
wing tips raising and lowering. Yaw is the nose mov-
ing from right to left. Pitch is seen as the nose moving
up and down. Maintaining flight is the act of over-
coming weight and drag with lift and thrust while
properly controlling all three axes.
Choosing the Thermalaire EP greatly simplifies
these activities. First, it takes very little thrust to over-
come the drag. So much so that the airplane will glide
without any motor power at all. Second, the wing is a
high lift design that easily overcomes the weight which
means that the airplane can fly very slowly.
Flying the Thermalaire EP
Check the controls. Make sure that the throttle,
elevator and rudder are all working properly. The
flight battery should be fully peak charged and ready
to go. First, let's lay out the basic maneuvers that
will make up your training flights.
1) Hand Launching
2) Climb-out
3) Level Flight
4) Standard Turns
5) Descent
6) Landing
All flight is based on these few tasks. Here, we've
laid them out in the same order they will be during
flight. Learn these basics and you will soon fly your
airplane with great success. Now look at each ma-
neuver individually. Before your first flight, make
sure that you are completely familiar with the func-
tions of the transmitter including all of the controls
and the trim levers.
Hand launching and climb-out require that the
airplane be facing directly into the wind. To hand
launch the airplane, grasp the fuselage between your
thumb and forefingers, at the center of gravity loca-
tion. Hold the airplane at about shoulder level, apply
full power, and solidly toss the airplane straight ahead
and level. Do not throw it hard or up at an angle.
Fly the airplane level for about 30 feet, allow-
ing the speed to pick up. Use the rudder to keep the
airplane tracking straight. After the airplane has
picked up some speed, begin a shallow climb by
applying a small amount of up elevator. Be gentle.
You don't want to overcontrol the airplane. Allow
the airplane to climb on its own. Climbing too fast
will cause the airplane to pitch up and it will stop
flying (called a stall). If this happens, allow the
nose to drop slightly (which will give the airplane
more speed) and then apply a small amount of up
elevator to bring the nose level.
Once the airplane has reached about 50 to 100
feet of altitude, it is time to level the airplane and
try a turn. To level the airplane, simply move the
elevator control stick to neutral. Keep the wings
level using the rudder control stick. If the airplane
still climbs or turns, adjust the elevator and rudder
trim levers until the airplane flies straight with no
stick input.
Now try a turn before the airplane gets too far
away. To turn, apply rudder in the direction you want
to turn until the wing drops about 15 degrees (or the
wing tip is just below the fuselage). As the wing
drops, begin to apply up elevator. Up elevator will
maintain the plane's altitude and will hold the air-
plane in the turn. To prevent the airplane from turning
too steeply, as soon as a good bank is established re-
lease the rudder control stick and use only the elevator
control stick to maintain altitude and hold the air-
plane in the turn. Once the airplane has turned
enough, apply opposite rudder to level the wings. As
this opposite rudder is applied, slowly release the up
elevator.
Lift
Weight
Thrust
Drag
Roll
Yaw
Pitch
Содержание Wattage Thermalaire EP
Страница 26: ...26...
