AIR TRAILS

Dorothy donned her overalls while Bill spoke to the mechanic who was

waiting by the plane. Then the man got into a car and drove away, and

Bill beckoned her to him.

"All set?"

"All set."

"Then we'll begin. First of all, you must know the names of the

different parts of the plane. Some you know already, but we'll go over

them just the same. That hinged movable auxiliary surface on the

trailing edge of the wing is an aileron. Its primary function is to

impress a rolling movement on the airplane. Got that?"

"Yes."

"Then repeat what I just said."

Dorothy did so.

"Good. Now this is a drag wire."

After twenty minutes of this kind of thing he asked her to point out an

aileron and explain its use.

"K.O." he said at last. "We'll go over parts each day for a while and

the book work you must do at home will help to refresh your memory. Now

nip into the forward cockpit and I'll explain the working of the

controls."

He gave Dorothy a hand up and when she was seated, swung himself on to

the cowl of the cockpit.

"First of all--and let this become habit--" he ordered, "adjust your

safety belt. Yes, that's the way. Now we'll go ahead. That's the stick

there. Take hold of it. You'll notice it is pivoted at its base. Forward

movement of the stick increases the angle of attack of the elevators and

depresses the nose. Backward movement decreases angle and raises the

nose. Lateral movement of the stick operates the ailerons, movement to

the right depressing the right wing, and to the left, the left wing."

When she was sure she understood the functions of one thing he explained

the next.

"Now tell me just what I have told you--" he commanded.

Fully an hour had gone by before he was satisfied that she understood

thoroughly.

"Tired?" he asked at last.

"Not a bit," she smiled. "I'm afraid I'm kind of dumb--but all these

gadgets, as you call them, are a little confusing at first."

"Oh, you're catching on in first rate order," he told her. "Nothing but

practice will make you letter perfect. And that comes soon enough when

you handle the plane yourself. Now I'll fly us home. All I want you to

do is to fold your arms and listen. Keep your eyes in the cockpit and

watch the movements of the stick and rudder bar. My cockpit aft is

equipped with similar controls. When I move my stick--yours moves--and

vice versa. All right?"

"You bet."

He reached in his pocket and drew forth a small leather-bound book which

he handed her.

"Here's your Flight Log Book, Dorothy. Write it up after every flight.

There are columns for the date, type of plane, duration and character of

flight, passengers or crew carried (if any) and remarks. A commercial

pilot should have his log book certified monthly by an official of the

company. For a student it is a good thing to commence during training.

Stick it in your pocket," he advised as she thanked him. "And put on

this helmet. It's a Gosport, with phones in both ear flaps, connected by

a voice tube to this mouthpiece. I'll use that end of it to coach you

through during flight."

"But this helmet is hard and stiff," objected Dorothy. "I'll bet it

isn't nearly as comfortable as that nice soft leather one you're

wearing."

"Possibly not. But until you're through with your instruction I want you

to wear a 'crash' helmet. They're a lot of protection for the head in

case of minor accident. No instructor worth his salt permits a student

to use a soft leather helmet until you've had a lot of experience."

"Oh, very well then," she said, adjusting her heavy headgear, "you're

the boss!"

"You bet I am when it comes to this kind of thing. If I weren't sure you

were willing to give me strict obedience, I'd never propose teaching

you. And please remember that this isn't a joy hop. The more attentive

you are to instruction--the quicker you'll learn."

"I'm your willing slave, sir," she mocked good-humoredly, and drew the

helmet strap tight beneath her chin.

Then as the engine roared and the plane rolled forward she felt the same

thrill she had experienced the afternoon before when she and Bill had

taken off in the amphibian. The same tightening of her muscles and

beating throb of the pulse in her neck. They were soaring upward now and

the sensation of smoothness became apparent after the jars and bumps of

taxiing over the rough field. The sting of the wind on her face was

exhilarating, but her eyes were streaming. Realizing that she had forgot

to adjust her goggles, she pulled them down from the front of her

helmet.

"I've been wondering how long it would be before you did that," came

Bill's voice through the headphones. "Never mind--it's a grand thrill

while it lasts--you'll lose it soon enough."

Dorothy, for the first time in her life, found a retort impossible to

make.

"Now that we've got enough air under us," Bill's voice continued, "I'm

going to fly straight for home. Remember what I said about watching your

stick and rudder bar. Also keep an eye on the bank-and-turn indicator as

well as the fore and aft level indicator and inclinometer."

Dorothy shifted her gaze to the instrument board before her.

Unconsciously she ticked off the other instruments. There were the two

Bill had just mentioned; a magneto switch, oil pressure gauge, earth

inductor, compass indicator, altimeter, 8-day clock, primary pump and

tachometer. It pleased her that she could so readily recall their names

and uses. Then she heard Bill's voice in her ear again:

"The reason that I keep pulling the stick back slightly so often,

Dorothy, in level flight, is because the old bus is a bit nose heavy.

You'll notice it when you handle her later on. It's nothing to worry

about. Very few planes are perfectly balanced."

Dorothy turned her eyes guiltily on the stick again. She had been caught

napping that time! One really needed half a dozen pairs of eyes for a

job like this. And--how different Bill's manner aboard an airplane, she

thought. He was certainly all business. But she respected and admired

his knowledge and his ability as an airpilot which left no opening for

argument.

"You can look overside now," came his voice again interrupting her

thoughts. "We're going to land."

Below them she saw the Bolton's house. The nose of the plane dropped

suddenly as the stick went forward and they shot down to land on the

field near the Bolton's hangar.

Bill spoke again from the rear cockpit. "If you're ready for more flight

instruction, hold up your right hand."

Dorothy held up her right hand.

"Good. Then we'll practice taxiing," came back the even voice. "Remember

that a land plane with engine idling will remain at rest on the ground

in winds of normal force. That means that all movement of the plane must

be made by use of the engine. When your bus begins to move you control

it primarily by using the rudder. In a wind as strong as the one blowing

now, you'll notice the plane's tendency to turn into it. That's due to

the effect on the tail. It tends to swing like a weathervane until the

nose is headed directly toward the point of the compass from which the

wind is blowing. Your experience in sailing is going to be a great help.

"Now, just one thing more and we'll shove off. While taxiing, you must

hold the stick well back of neutral. That will prevent any tendency of

the tail to rise and cause the plane to nose over. Grasp the stick

lightly with your fingers. Never freeze onto anything. If you feel me

wiggle the stick sharply--let go at once. I may or may not have my hands

and feet on the controls, but you cannot know that. Act just as if you

were alone in the plane. Got all that?"

Dorothy raised her hand again.

"Then snap on the ignition and get going."

For the next hour she taxied the _N-9_ around the field while Bill

issued commands from the rear cockpit. So interested was she in her

lesson that it seemed no time at all before he told her to shut off the

engine.

"Take off your helmet and get down," he said as the plane came to a

stop. And he helped her overside.

"Gee, Bill, it's wonderful!" she cried, jumping lightly to the ground

beside him.

"You did splendidly," he encouraged. "This field is pretty rough in

spots--makes it bumpy going. How are you--stiff?"

"Not a bit!"

"You need a rest, just the same."

"But I'm not in the least tired. Can't I go up now?"

Bill looked at her and shook his head. "Nothing doing," he said with

pretended sternness. "That is--not for the next fifteen minutes. Here

comes Frank with something cold to drink on his tray--horse's neck,

probably. There's nothing like iced ginger ale with a string of lemon

peel in it when you're real thirsty!"

"My, you're thoughtful!"

"Don't thank me--it's all Frank's idea."

They sipped their drinks in the shade of the old barn that had been

turned into a hangar for the Bolton's planes.

"While you're resting, I want you to study this paper, Dorothy. It's a

routine I want you to follow in preparing for every flight you

take--with me, or soloing," he explained, handing it over. "When you've

got it by heart, repeat it to me and then we'll carry on. Your first job

for the next hop will be to do exactly what I've written there."

For perhaps ten minutes both were silent and Bill closed his eyes and

turned over on his back.

"Asleep?" asked Dorothy presently.

"No--just relaxing. Got that dope down pat?"

"Sure. I mean, yes, instructor."

"Give me back the paper then, and shoot!" he said, sitting up.

"Preparations for flight:" recited Dorothy. "First, inspect the plane

and engine as necessary. Second, observe the wind direction. Third,

observe the course direction (if a course is being flown). Fourth, set

the altimeter. Fifth, see that helmet, goggles and cushions are properly

adjusted. Sixth, see that cloth to wipe goggles is handy. Seventh, give

the engine a ground test. Eighth, see that the gas valve is properly

set. Ninth and last--Buckle the safety belt!"

"One hundred per cent! Good work, Dot. Now come over to the plane and

show me how you do it."

He grinned, awaiting a quick retort--but Dorothy, intent on the business

of learning to fly, walked at his side in a fit of concentration.

"She sure is keen," he said to himself. "I never got a rise--and 'Dot,'

to Dorothy, is like waving the American flag at a Mexican bull!"

Dorothy continued to prove her aptitude for she went through the flight

preparations with but one mistake. She entirely forgot the matter of the

cloth to wipe her goggles!

Presently he took her up again and started in with his coaching.

"You now have thirty-five hundred feet registered on your altimeter," he

announced through her phone. "Enough air below to get us out of trouble

if we should happen to get into it. The higher one flies, the safer one

is. Now you are going to get straight flight instruction. I am moving

the stick backward--now forward--now backward--now forward. See how the

nose of the plane rises and falls in response? Watch closely--I'm going

to do it again. There, now--take the stick and do it yourself."

Dorothy did as he bade her. It was thrilling to feel the huge plane

respond to her will.

Then followed instruction in moving the stick successively right and

left by which means the right wing and then the left are correspondingly

depressed. After that came rudder instruction. First Bill pushed the

right and left sides of the rudder bar successively, forward, thereby

swerving the nose first to the right and then to the left.

Dorothy, of course repeated these movements after him.

Then he explained that to hold a steady course, to fly straight,

constant right rudder must be maintained to overcome the torque, or drag

of the propeller blades tending to swing the nose to the left. While to

fly level longitudinally, some point on the engine is kept in line with

the horizon. That to fly level laterally, up aileron and opposite rudder

are applied whenever a wing drops. He told her numerous other things,

such as that when flying straight, the nose should frequently be dropped

momentarily, or the course changed a few degrees in order to look ahead.

Otherwise, an approaching plane may be hidden by the engine.

"Good night!" thought Dorothy as she strained her ears to catch every

word, while she watched the controls and saw how the plane reacted to

their manipulation by her instructor. "If it takes all this detail to

fly straight and level, I'll get the heebie-jeebies when it comes to

acrobatics!"

"Take over controls," came Bill's voice. "Fly straight for that white

church tower on the horizon."

Dorothy's body stiffened, but she took hold of the stick again bravely

enough, and placed her feet on the rudder bar at the same time. She

could feel her temples throbbing, and her heart was beating faster than

the clock on her instrument board. At last she was actually flying an

airplane--all by herself. But was she? Suddenly there came a check in

the forward speed of the plane and Dorothy felt it start to slew off

sideways as the nose dropped.

Then before she knew exactly what was happening, the stick in her hand

seemed to spring back, then to the right, while right rudder increased

considerably without help from her foot. Up came the nose, followed by

the left wing, and down went the right. The slewing stopped as suddenly

as it had begun. Then she felt left aileron and left rudder being

applied--and once more the N-9 was flying straight and level.

"Forgot what I said about checking a skid just now, didn't you?" said

Bill's voice in her ear. "Here's the news again. Any swinging of the

nose to the left can be promptly recognized and checked--but,--and

here's where you went wrong--the nose cannot be swung back to the right

without applying a small bank. Any attempt to do so will cause your

plane to skid. That naturally results in a loss of flying speed forward

and the heavier end drops. If not checked at once, it means going into a

spin. Carry on again now, and please try to keep your wits about you.

This is not a kiddie-car. Mistakes are apt to be costly!"

Dorothy bit her lips in anger. More than ever did she regret the lack of

a mouth piece on her head phone. Her temper flared at his sharp tone,

and what seemed to her unfair criticism so early in the game. But she

took over again as he ordered and gradually her vexation disappeared in

her effort to concentrate every faculty on the job of flying the plane

and keeping to her course. She was gradually gaining confidence. She

made the same maneuvers which had caused the skid before, and carried

through perfectly.

Bill told her so in no stinted terms, and the last shreds of her anger

disappeared.

"The man who put _me_ over the bumps," he added, "always said: 'when a

student aviator makes a mistake, give him blazes--make him mad. He'll

remember what he should have done all the better--and live longer!' That

advice applies to either sex, Dorothy. Naturally, I hope you'll live to

a ripe old age."

Dorothy liked him for this apology. She wanted to thank him but of

course that was out of the question.

"I'll take her over now." She heard his even tones once more, above the

engine's roar. "Time for lunch. This afternoon, if you like, we'll take

up another end of this business. And you can get even by teaching me how

to become an honest-to-goodness sleuthhound!"

_Chapter X_

Dorothy Dixon Wins Her Wings · 第 30 / 43 题