16 quotes
All flight is based upon producing air pressure, all flight energy consists in overcoming air pressure.
Der Vogelflug als Grundlage der Fliegekunst (1889)
Actual practice in individual flight presents the best prospects for developing our capacity until it leads to perfected free flight.
The Romance of Aeronautics (1912)
Gradual development of flight should begin with the simplest apparatus and movements, and without time complication of dynamic means.
The Romance of Aeronautics (1912)
The supporting powers of time air and of the wind depend on the shape of the surfaces used, and the best forms can only be evolved by free flight through the air.
The Romance of Aeronautics (1912)
The sailing flight of birds is the only form of flight which is carried on for some length of time without the expenditure of power.
The Romance of Aeronautics (1912)
Numerous technicians in every state are doing their utmost to achieve the dream of free, unlimited flight and it is precisely here where changes can be made which would have a radical effect on our whole way of life.
The contrivances which are necessary to counteract the wind effects can only be understood by actual practice in the wind.
The Romance of Aeronautics (1912)
The maintenance of equilibrium in forward flight is a matter of practice, and can only be learned by repeated personal experiment.
The Romance of Aeronautics (1912)
We are getting closer to this goal. When we will reach it, I do not know.
I, too, have made it a lifelong task of mine to add a cultural element to my work, which should result in uniting countries and reconciling their people.
Experience alone can teach us the best forms of construction for sailing apparatus in order that they may be of sufficient strength, very light, and most easily managed.
The Romance of Aeronautics (1912)
The increasing size of the apparatus makes the construction more difficult in securing lightness in the machine; therefore the building of small apparatus is to be recommended.
The Romance of Aeronautics (1912)
Artificial flight may be defined as that form of aviation in which a man flies at will in any direction by means of an apparatus attached to his body, the use of which requires personal skill.
The Romance of Aeronautics (1912)
By practice and experience a man can (if the wind be of the right strength) imitate the complete sailing flight of birds by availing himself of the slight upward trend of some winds, by performing circling sweeps, and by allowing the air to carry him.
The Romance of Aeronautics (1912)
The difficulty of rising into the air increases rapidly with the size of the apparatus. The uplifting of a single person, therefore, is more easily attained than that of a large flying machine loaded with several persons.
The Romance of Aeronautics (1912)
To design a flying machine is nothing. To build one is something. But to fly is everything.
Misattributed