GREAT PLANES Spirit Select 사용 설명서 - 페이지 7

{카테고리_이름} GREAT PLANES Spirit Select에 대한 사용 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. GREAT PLANES Spirit Select 8 페이지. 2-meter sailplane

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Follow the directions that came with the hi-start and lay it out

directly into the wind. Place the stake at the far upwind edge of the

flying field so the parachute will blow back onto the flying field.

Turn on your transmitter and then your receiver and hook the

parachute onto your plane's tow hook. Pull the plane back

approximately twice as far as the rubber is long (i.e., 100' of rubber

= pull back 200') or whatever the hi-start instructions state. A "fish

scale" is handy for determining the correct amount of pull. For your

first flights pull the plane back until there is approximately 8 lbs. of

tension. More tension can be used after you get acquainted with

the launching procedure.

Hold the plane above your head with the wings level and the nose

pointed slightly up and directly into the wind. Give the plane a

healthy push forward to get it flying and it will climb up like a kite.

You should not have to touch the elevator during the launch but

use the rudder stick to keep it going straight up. As the rubber

relaxes the plane will fly off the hi-start and the parachute will bring

the end of the string back towards you.

First Flights

Find a BIG, OPEN field for your first flights. The bigger the better

as you won't have to worry about where you need to land. Ground

based objects (trees, poles, buildings, etc.) seem to attract model

airplanes like a magnet. Again, we would like to recommend

that you find an experienced pilot to help you with these first

flights.

Note: You need to remember that your radio control responds

as if you were sitting in the cockpit. When you push the

transmitter stick to the right, the rudder moves to the plane's

right! This means that when the plane is flying towards you it

may seem like the rudder controls are reversed (when you

give "right" rudder the plane turns to your left–which is the

plane's "right"). It is sometimes easier to learn to fly the plane if

you always face your body in the direction the plane is flying and

look over your shoulder to watch the model.

Don't worry about accomplishing very much on your first flights.

Use these flights to get the "feel" of the controls and the Spirit

Select's flying characteristics. Try to keep the plane upwind and

just perform some gentle "S-turns" (always turning into the wind)

until it is time to set up for landing. Have a helper adjust the trims

on your transmitter (a little at a time) until the plane will fly straight

and level with the transmitter sticks in their neutral positions. It can

be very hard for a beginner to fly a plane straight towards him as

he would have to do if the plane were downwind and every mistake

takes the plane a little farther downwind. When it is time to land,

just continue performing the gentle "S-turns" upwind and let the

plane glide onto the ground. Don't worry about where the plane

lands–just miss any trees, etc.

Practice flying directly into the wind (upwind of yourself) without

letting the plane get off course, and then turn and come downwind

until the plane is even with you and try it again. When you are

comfortable with flying directly into the wind, start letting the plane

go behind you (downwind) a little before you start back upwind.

Continue this until you can fly directly towards you from downwind

without getting disoriented. At this point you can start to establish

a "landing pattern" and bring the sailplane in for a landing from

downwind. This enables the plane to be flown as slowly (ground

speed) as possible for accurate landings.

Thermal Flying

Thermal soaring is one of the most intriguing of all aspects of flying

and the Spirit Select was designed to excel at thermal soaring even

in the hands of a novice. It can be hard for the average person to

understand how a plane can fly for hours and gain altitude without

a motor!

Facts About Thermals

Thermals are a natural phenomenon that happen outside, by the

millions, every single day of the year. Thermals are responsible for

many things including forming several types of clouds, creating

breezes, and distributing plant seeds and pollen. If you have ever

seen a dust devil (which is nothing more than a thermal that has

picked up some dust), you have seen a thermal in action. Their

swirling action is very similar to that of a tornado but of course

much gentler. Most thermals have updrafts rising in the 200 – 700

feet per minute range but they have been known to produce

updrafts of over 5,000 feet per minute (that's over 50 miles/hour

straight up!) These strong thermals can rip a plane apart or carry

the plane out of sight before the pilot can get out of the updraft.

Thermals are formed by the uneven heating of the earth and

buildings, etc. by the sun. The darker colored surfaces absorb heat

faster than the lighter colors which reflect a great deal of the sun's

energy back into space. These darker areas (plowed fields, asphalt

parking lots, tar roofs, etc.) get warmer than the lighter areas

(lakes, grassy fields, forests, etc.). This causes the air above the

darker areas to be warmer than the air over the lighter areas and

the more buoyant warm air rises as the cooler, denser air forces its

way underneath the warmer air. As this warm air is forced upward

it contacts the cooler air of the higher altitudes and this larger

temperature difference makes the thermal rise quicker. The

thermal is gradually cooled by the surrounding cooler air and its

strength diminishes. Eventually the thermal stops rising and any

moisture contained in the once warm air condenses and forms a

puffy cumulus cloud. These clouds, which mark the tops of

thermals, are usually between 2000 and 5000 feet high.

Thermal Soaring

It takes a lot of concentration to thermal soar effectively. A sailplane

can fly along the edge of a thermal and unless the pilot is carefully

watching the model he may not realize the opportunity to gain

some altitude. Because most thermals are relatively small (a

couple hundred feet in diameter or less at 400' altitude) compared

to the rest of the sky, the sailplanes will rarely fly directly into the

thermal and start rising. Generally, the sailplane will fly into the

edge or near a thermal and the effects the thermal has on the

plane may be almost unnoticeable. As the sailplane approaches a

thermal, the wing tip that reaches the rising air first will be lifted

before the opposite wing tip. This causes the plane to "bank" and

turn away from where we would like the plane to go.

When you are thermal soaring, try to fly as smoothly and straight

as possible. Trim the plane to fly in a straight line and only touch

the controls when you have to. Watch the sailplane carefully and it

will tell you what it is encountering.

When the sailplane flies directly into a thermal it will either start

rising or stop sinking. Either case is reason enough to start circling

(especially in a contest where every second counts). Fly straight