The Aeroplane Speaks [51]
racks to stand them in, then the best plan is to lean them up against the wall in as near a vertical position as possible.
TIME.--Learn to know the time necessary to complete any of the various rigging jobs. This is really important. Ignorance of this will lead to bitter disappointments in civil life; and, where Service flying is concerned, it will, to say the least of it, earn unpopularity with senior officers, and fail to develop respect and good work where men are concerned.
THE AEROPLANE SHED.--This should be kept as clean and orderly as possible. A clean, smart shed produces briskness, energy, and pride of work. A dirty, disorderly shed nearly always produces slackness and poor quality of work, lost tools and mislaid material.
GLOSSARY
Aeronautics--The science of aerial navigation.
Aerofoil--A rigid structure, of large superficial area relative to its thickness, designed to obtain, when driven through the air at an angle inclined to the direction of motion, a reaction from the air approximately at right angles to its surface. Always cambered when intended to secure a reaction in one direction only. As the term ``aerofoil'' is hardly ever used in practical aeronautics, I have, throughout this book, used the term SURFACE, which, while academically incorrect, since it does not indicate thickness, is a term usually used to describe the cambered lifting surfaces, i.e., the ``planes'' or ``wings,'' and the stabilizers and the controlling aerofoils.
Aerodrome--The name usually applied to a ground used for the practice of aviation. It really means ``flying machine,'' but is never used in that sense nowadays.
Aeroplane--A power-driven aerofoil with stabilizing and controlling surfaces.
Acceleration--The rate of change of velocity.
Angle of Incidence--The angle at which the ``neutral lift line'' of a surface attacks the air.
Angle of Incidence, Rigger's--The angle the chord of a surface makes with a line parallel to the axis of the propeller.
Angle of Incidence, Maximum--The greatest angle of incidence at which, for a given power, surface (including detrimental surface), and weight, horizontal flight can be maintained.
Angle of Incidence, Minimum--The smallest angle of incidence at which, for a given power, surface (including detrimental surface), and weight, horizontal flight can be maintained.
Angle of Incidence, Best Climbing--That angle of incidence at which an aeroplane ascends quickest. An angle approximately halfway between the maximum and optimum angles.
Angle of Incidence, Optimum--The angle of incidence at which the lift-drift ratio is the highest.
Angle, Gliding--The angle between the horizontal and the path along which an aeroplane at normal flying speed, but not under engine power, descends in still air.
Angle, Dihedral--The angle between two planes.
Angle, Lateral Dihedral--The lifting surface of an aeroplane is said to be at a lateral dihedral angle when it is inclined upward towards its wing-tips.
Angle, Longitudinal Dihedral--The main surface and tail surface are said to be at a longitudinal dihedral angle when the projections of their neutral lift lines meet and produce an angle above them.
Angle, Rigger's Longitudinal Dihedral--Ditto, but substituting ``chords'' for ``neutral life lines.''
Angle, Pitch--The angle at any given point of a propeller, at which the blade is inclined to the direction of motion when the propeller is revolving but the aeroplane stationary.
Altimeter--An instrument used for measuring height.
Air-Speed Indicator--An instrument used for measuring air pressures or velocities. It consequently indicates whether the surface is securing the requisite reaction for flight. Usually calibrated in miles per hour, in which case it indicates the correct number of miles per hour at only one altitude. This is owing to the density of the air decreasing with increase of altitude and necessitating a greater speed through space to secure the same air pressure as would be secured by less speed at a lower altitude. It would be more
TIME.--Learn to know the time necessary to complete any of the various rigging jobs. This is really important. Ignorance of this will lead to bitter disappointments in civil life; and, where Service flying is concerned, it will, to say the least of it, earn unpopularity with senior officers, and fail to develop respect and good work where men are concerned.
THE AEROPLANE SHED.--This should be kept as clean and orderly as possible. A clean, smart shed produces briskness, energy, and pride of work. A dirty, disorderly shed nearly always produces slackness and poor quality of work, lost tools and mislaid material.
GLOSSARY
Aeronautics--The science of aerial navigation.
Aerofoil--A rigid structure, of large superficial area relative to its thickness, designed to obtain, when driven through the air at an angle inclined to the direction of motion, a reaction from the air approximately at right angles to its surface. Always cambered when intended to secure a reaction in one direction only. As the term ``aerofoil'' is hardly ever used in practical aeronautics, I have, throughout this book, used the term SURFACE, which, while academically incorrect, since it does not indicate thickness, is a term usually used to describe the cambered lifting surfaces, i.e., the ``planes'' or ``wings,'' and the stabilizers and the controlling aerofoils.
Aerodrome--The name usually applied to a ground used for the practice of aviation. It really means ``flying machine,'' but is never used in that sense nowadays.
Aeroplane--A power-driven aerofoil with stabilizing and controlling surfaces.
Acceleration--The rate of change of velocity.
Angle of Incidence--The angle at which the ``neutral lift line'' of a surface attacks the air.
Angle of Incidence, Rigger's--The angle the chord of a surface makes with a line parallel to the axis of the propeller.
Angle of Incidence, Maximum--The greatest angle of incidence at which, for a given power, surface (including detrimental surface), and weight, horizontal flight can be maintained.
Angle of Incidence, Minimum--The smallest angle of incidence at which, for a given power, surface (including detrimental surface), and weight, horizontal flight can be maintained.
Angle of Incidence, Best Climbing--That angle of incidence at which an aeroplane ascends quickest. An angle approximately halfway between the maximum and optimum angles.
Angle of Incidence, Optimum--The angle of incidence at which the lift-drift ratio is the highest.
Angle, Gliding--The angle between the horizontal and the path along which an aeroplane at normal flying speed, but not under engine power, descends in still air.
Angle, Dihedral--The angle between two planes.
Angle, Lateral Dihedral--The lifting surface of an aeroplane is said to be at a lateral dihedral angle when it is inclined upward towards its wing-tips.
Angle, Longitudinal Dihedral--The main surface and tail surface are said to be at a longitudinal dihedral angle when the projections of their neutral lift lines meet and produce an angle above them.
Angle, Rigger's Longitudinal Dihedral--Ditto, but substituting ``chords'' for ``neutral life lines.''
Angle, Pitch--The angle at any given point of a propeller, at which the blade is inclined to the direction of motion when the propeller is revolving but the aeroplane stationary.
Altimeter--An instrument used for measuring height.
Air-Speed Indicator--An instrument used for measuring air pressures or velocities. It consequently indicates whether the surface is securing the requisite reaction for flight. Usually calibrated in miles per hour, in which case it indicates the correct number of miles per hour at only one altitude. This is owing to the density of the air decreasing with increase of altitude and necessitating a greater speed through space to secure the same air pressure as would be secured by less speed at a lower altitude. It would be more