Dick Hamilton's Airship Part 19

CHAPTER XIV

THE TRIAL FLIGHT

"All ready now; take her out!"

"Yes, and look out for the side wings! That doorway isn't any too wide."

"No. We'll have to cut some off, I guess!"

"Say, it's big; isn't it?"

These were the comments of d.i.c.k Hamilton and his chums as the fine, new airship, the Abaris, was wheeled out of the shed where it had been constructed. And certainly the young millionaire might be proud of his newest possession. Mr. Vardon and his men had labored well on the aeroplane.

It was rather a tight squeeze to get the big craft out of the barn doors, wide as they were, but it was successfully accomplished, and the craft now stood on a level stretch of gra.s.s, ready for her first trial flight.

Save for a few small details, and the stocking and provisioning of the craft in preparation for the trip across the continent, everything had been finished. The big motor had been successfully tested, and had developed even more power than had been expected. The propellers delivered a greater thrust on the air than was actually required to send the Abaris along.

"We'll have that for emergencies," said d.i.c.k. "Such as getting about in a hurricane, and the like."

"I hope we don't get into anything like that," remarked Mr. Vardon, "but if we do, I think we can weather it."

"How does the gyroscope stabilizer work?" asked Paul, who with Innis, had made d.i.c.k's house his home while the airship was being built.

"It does better than I expected," replied the inventor. "I was a bit doubtful, on account of having to make it so much larger than my first model, whether or not it would operate. But it does, perfectly,--at least it has in the preliminary tests. It remains to be seen whether or not it will do so when we're in the air, but I trust it will."

"At any rate, Larson hasn't had a chance to tamper with it," said Jack b.u.t.t, grimly.

"No, he hasn't been around," agreed d.i.c.k. "I wonder what has become of him?"

As yet the young millionaire knew nothing of the plans of his Uncle Ezra, for he had been too busy to visit his relatives in Dankville.

"Well, let's wheel her over to the starting ground," proposed d.i.c.k, as they stood around the airship. A level stretch had been prepared back of the barn, leading over a broad meadow, and above this the test flight would be made, as it offered many good landing places.

The airship was so large and heavy, as compared with the ordinary biplane, that a team of horses was used to pull it to the starting place. But heavy as it necessarily had to be, to allow the enclosed cabin to be carried, the young millionaire and his aviator hoped that the power of the motor would carry them aloft and keep them there.

"Go ahead!" cried d.i.c.k, as the team was. .h.i.tched to the long rope made fast to the craft. "Take it easy now, we don't want an accident before we get started. Grit, come back here! This is nothing to get excited over," for the bulldog was wildly racing here and there, barking loudly. He did not understand the use of the big, queer-looking machine.

"Well, I'm just in time, I see!" exclaimed a voice from the direction of the house. d.i.c.k turned and cried:

"h.e.l.lo, Larry, old man. I'm glad you got here. I was afraid you wouldn't," and he vigorously shook hands with the young reporter, who also greeted the other cadets. Grit leaped joyfully upon him, for he and Larry were great friends.

"Going to take her up, d.i.c.k?" asked Larry Dexter.

"Going to try," was the cautious answer.

"Want to take a chance?"

"I sure do! It won't be the first chance I've taken. And I may get a good story out of this. Got orders from the editor not to let anything get away from me."

"Well, I hope you have a success to report, and not a failure,"

remarked Paul.

"Same here," echoed Beeby.

When the airship had been hauled to the edge of the starting ground, a smooth, hard-packed, level s.p.a.ce, inclining slightly down grade, so as to give every advantage, a careful inspection was made of every part of the craft.

As I have explained, all the vital parts of the Abaris were in the enclosed cabin, a unique feature of the airship. In that, located "amid-ships," was the big motor, the various controls, the living, sleeping and dining-rooms and storage compartments for oil, gasolene and supplies. Naturally there was no excess room, and quarters were almost as cramped as on a submarine, where every inch counts.

But there was room enough to move about, and have some comfort. On an enclosed platform back of the cabin there was more s.p.a.ce. That was like an open deck, and those on it would be protected from the fierce rushing of the air, by means of the cabin. This cabin, I might add, was built wedge-shaped, with the small part pointing ahead, to cut down the air resistance as much as possible.

The big propellers were of course outside the cabin, and in the rear, where was located the horizontal rudder, for guiding the craft to right or left. At the rear was also an auxiliary vertical rudder, for elevating or lowering the craft. The main elevation rudder was in front, and this was of a new shape, never before used, as far as Mr.

Vardon knew.

There was another feature of the Abaris that was new and one which added much to the comfort and safety of those aboard her. This had to do with the starting of the motor and the operation of the big wooden propellers.

In most aeroplanes, whether of the single or double type, the propeller, or propellers, are directly connected to the motor. In some monoplanes the motor, especially the Gnome, itself rotates, carrying the blades with it. In biplanes, such as the Burgess, Wright or Curtiss, it is the custom to operate the propellers directly from the motor, either by means of a shaft, or by sprocket chains.

But, in any case, the starting of the engine means the whirling of the propellers, for they are directly connected. This is why, when once the engine stops in mid-air, it can not be started again. Or at least if it is started it is mostly a matter of chance in getting it to go under compression or by the spark. There is no chance for the aviator to get out and whirl the propellers which are, in a measure, what a flywheel is to an automobile.

Also that is why the aviator has to be in his seat at the controls, and have some other person start his machine for him, by turning over the propeller, or propellers until the motor fires.

Lately however, especially since the talk of the flight across the Atlantic, a means has been found to allow the aviator, or some helper with him, to start the engine once it has stalled in midair. This is accomplished by means of a sprocket chain gear and a crank connected to the engine shaft. The turning handle is within reach of the aviator.

But Mr. Vardon, and d.i.c.k, working together, had evolved something better than this. Of course in their craft, with s.p.a.ce to move about in the cabin, they had an advantage over the ordinary aviator, who, in case of engine trouble, has no place to step to to make an examination.

But d.i.c.k's engine was not directly connected to the propellers. There was a clutch arrangement, so that the motor could be started, with the propellers out of gear, and they could be "thrown in," just as an automobile is started. This gave greater flexibility, and also allowed for the reversing of the propellers to make a quick stop.

And it was not necessary for d.i.c.k to "crank" his motor. An electric self-starter did this for him, though in case of emergency the engine could be started by hand.

In fact everything aboard the Abaris was most up-to-date, and it was on this that d.i.c.k counted in winning the big prize.

"Well, I guess everything is as ready as it ever will be," remarked the young millionaire, as he and the aviator made a final inspection of the craft. "Get aboard, fellows!"

"He's as cheerful about it as though he were inviting us to a hanging,"

laughed Paul.

"Oh, I'm not worrying about any accident," said d.i.c.k quickly. "I'm only afraid we've made her too big and won't get any speed out of her.

And speed is what's going to count in this trans-continental flight."

"She'll be speedy enough," predicted Mr. Vardon, with a confident air.

Paul, Innis, Larry and Mr. Vardon entered the cabin. Then d.i.c.k went in, followed by Jack b.u.t.t, who remained to tighten a guy wire that was not just to his satisfaction.

"Well, are we all here?" asked d.i.c.k, looking around.

"Yes," answered Paul, and there was a note of quiet apprehension in his voice. Indeed it was rather a risk they were all taking, but they had confidence in Mr. Vardon.