The double control works in this way: The controls and the pedals of the pupil are a duplicate set of those of the "moniteur," or instructor, and have the same connections with the engine and steering apparatus. Either set will steer the machine. The pupil takes hold of the controls and places his feet on the pedals. Every motion of the instructor is reproduced in the pupil's control and pedals—their hands and feet move together. In this way the pupil develops a reflex action and instinct for doing the right thing. Each day, weather permitting, at least half a dozen flights are made by a pupil. Gradually the "moniteur" allows him to control the machine. Suddenly he finds himself running the biplane alone, with his instructor riding as a passenger behind him and merely giving him a word of advice or caution from time to time.
Landing is the most difficult part of aviation to master. A great many of the accidents occur because the aviator has made a poor contact with the ground. In fact, in the early days of aviation most of the accidents occurred near the ground, and this led people to speculate on the peculiar action of the lower air currents. These, in reality, had little to do with it. The cause lay in the inability of the pilots to know how to make proper contacts and to appreciate the fact which we now know to be a fundamental principle, that the engine should be shut off before a machine catches the air and volplanes down against the wind. There are exceptions to this rule, but not for a beginner. Sometimes it is necessary for the pilot to descend against a strong wind. In order to maintain the required speed the motor must be left partially turned on. Generally it is most important to turn off the motor, because if the landing is made with the wind, even in the gentlest breeze, the aeroplane, on account of the speed of the tail wind, is likely to turn a somersault and be completely smashed up. Even then another manoeuvre has to be mastered. Just before alighting the pilot must make a quick upward turn, so that at the moment of contact the machine may be travelling parallel with the ground. Formerly the importance of this little upward turn of the rudder was not fully appreciated by aviators, and many a machine was wrecked by a sudden hard compact with the earth.
When the "moniteur" sees that his pupil has acquired the knack of making a landing he passes on to the all-important manoeuvre of volplaning, and the dreaded "perte de vitesse" is tackled. Lastly, but not least, comes the "virage"—turn, or bank, as we say in English. These rudimentary principles are all that are required of the élève before he may go up alone, or be "lâché."
During this phase of my instruction it was repeatedly impressed upon me that, if anything ever happened to me when I was in the air and I did not immediately realize what to do, I was to let go of the controls, turn off the motor, and let the machine take charge of itself. The modern aeroplane is naturally so stable that, if not interfered with, it will always attempt to right itself before the dreaded "vrille" occurs, and fall "en feuille morte." Like a leaf dropping in an autumn breeze is what this means, and no other words explain the meaning better.
A curious instance of this happened one day as I was watching the flights and waiting for my turn. I was particularly interested in a machine that had just risen from the "Grande Piste." It was acting very peculiarly. Suddenly its motor was heard to stop. Instead of diving it commenced to wabble, indicating a "perte de vitesse." It slipped off on the wing and then dove. I watched it intently, expecting it to turn into the dreaded spiral. Instead it began to climb. Then it went off on the wing, righted itself, again slipped off on the wing, volplaned, and went off once more. This extraordinary performance was repeated several times, while each time the machine approached nearer and nearer to the ground. I thought that the pilot would surely be killed. Luck was with him, however, for his slip ceased just as he made contact with the ground, and he settled in a neighboring field. It was a very bumpy landing, but the aeroplane was undamaged.
The officers rushed to the spot to find out what was the matter. They found the pilot unconscious but otherwise unhurt. Later, in the hospital, he explained that the altitude had affected his heart and that he had fainted. As he felt himself going he remembered his instructions and relinquished the controls, at the same moment stopping his motor. His presence of mind and his luck had saved his life—his luck, I say, for had the machine not righted itself at the moment of touching the ground it would have been inevitably wrecked.
This was a practical demonstration of the expediency of the French method of instruction, and before long it was to serve me also in good stead.
One day, after I had flown for several hours in the double-control machine, my "moniteur" told me that he thought me qualified to be "lâché," and that I was to go up alone the following morning. I felt very proud and confided my feelings to one of my friends who had been qualified a few hours earlier. While we were talking he was called upon to make his first independent flight. We watched him leave the ground, rise, and then make his turns. He was doing remarkably well for a beginner, but when he came down for his landing he did not redress his machine in time and it crushed him to the ground, with fatal result. This completely unnerved me. I lost all desire to fly the following day, and prayed earnestly for rain. The next morning, however, was beautifully clear. The captain was there to watch my flight. I was loath to go up, but I had no alternative. The mechanics rolled out a single-control biplane for my use and I climbed in. The motor was started. With its crackling noise my nerve almost deserted me again. I should have felt less frightened, probably, had no one been looking on, but my "moniteur," my captain, and all my comrades stood there, interested to see how I would handle myself. I had to see the thing through, so I opened the throttle. The machine began to roll along the ground, then to bounce, and then, in response to a pull on the control, to fly. I was flying alone. The thought filled me with alarm. I rose to less than two hundred feet, but it seemed prodigious. Then I made a turn. When I found that I was flying smoothly and easily I felt a little more confident. As I turned back toward the field I could see my masters and comrades below looking up at me. Another machine was about to leave the field. It seemed no larger than a huge insect as it glided across the ground. I made up my mind that I was going to make good. If others could do it, I could. I volplaned down, and made my landing safely but somewhat bumpily. The captain told me that I would do, but he would like me to make another turn. I went up again. This time I made a faultless landing. I had passed my test satisfactorily. I felt happy and confident. I was now qualified to "conduct" an aeroplane alone, and in a few weeks I would be allowed to try for a brevet as military pilot.
There were several other pilots whose turns to pass to the "Grande Piste" came before mine. I had, therefore, to wait for several days, which I used to advantage in taking up the old "double-control" machine alone. In this way I was able to make several ascensions and landings every morning and every night. This was to be of the greatest service to me later, for during these practice flights I acquired perfect confidence in myself. At other times, both before and after working hours, my "moniteur" would take me up with him as a passenger for a newly discovered sport. We would rush along the ground, barely two feet above it, and put up partridges, which abounded in the greatest numbers. Our speed would enable us to overtake and hit them with the wires of the machine and kill them. Running along the ground in this way is always attended with danger, but it was real sport. One morning in twenty minutes we killed six partridges in this novel manner.
Finally my turn came. I graduated from the beginners' class at "La Mare de Grenouille" to the company of the more finished pilots of the "Grande Piste." The beginners' field is called the "frog's meadow," because the landings are so hoppy. On the "Grande Piste" we had newer and faster machines, and we could fly alone and go practically anywhere we wished. Six pilots were assigned to one aeroplane. We had to divide up the time equally between each pilot, so as to give every one an opportunity of making at least two flights both morning and afternoon. A maximum height was imposed upon each "équipe," and this was gradually increased from five hundred feet to a thousand, and then to one thousand five hundred, as we became more and more adept.