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acceptable acting aileron airspeed analysis angle applied assumed attachment average balancing basic bending bolts cable carry chord coefficient Compliance Suggestion component computations considered construction control surfaces control system corresponding covering critical curve deflection desirable determined devices direction distribution drag edge effects elevator engine equal equipment factor of safety Figure fittings flap flight flight conditions flutter force fuselage glider ground gust hinge horizontal indicated installed landing leading less limit load load factor maneuvering material maximum mean mean aerodynamic method necessary negative normal nose noted obtained operation percent pilot portion position possible pressure prevent ratio recommendations referred represent resultant ribs shown skid span spar specified speed stability standard strength stress structure strut suitable tail tail surfaces tank tion torsional towing tube ultimate unit unless usually vertical weight wheel wing wires wood
Էջ 123 - The airplane shall be controllable and maneuverable during take-off, climb, level flight, glide, and landing and it shall be possible to make a smooth transition from one flight condition to another without requiring an exceptional degree of skill, alertness, or strength on the part of the pilot...
Էջ 47 - Box beams. In computing the ability of box beams to resist bending loads only that portion of the web with its grain parallel to the beam axis and one-half of that portion of the web with its grain at an angle of 45 degrees to the beam shall be considered. The more conservative method of neglecting the web entirely may be employed.
Էջ 43 - Double drag trusses. Whenever double drag trussing is employed, all drag wires shall incorporate a multiplying factor of safety varying linearly from 3.0, when the ratio of overhang to root chord of overhang Is 2.0 or greater, to 1.20 when such ratio Is 1.0 or less, assuming an equal division of drag load between the two systems.
Էջ 135 - Provisions must be made to allow rapid and complete drainage of the cowling in normal ground and flight attitudes. Drains must not discharge In locations constituting a fire hazard.
Էջ xv - Balancing loads. Loads by which the airplane is placed in a state of equilibrium under the action of external forces resulting from specified loading conditions. The state of equilibrium thus obtained may be either real or fictitious. Balancing loads may represent air loads, inertia loads, or both. (See § 4a.ll6.) § 4a.44 Aerodynamic coefficients, CL, CM, CP, etc. The coefficients hereinafter specified are those of the "absolute" (nondimensional) system adopted as standard in the United States.
Էջ xv - CP, etc. The coefficients hereinafter specified are those of the "absolute" (nondimensional) system adopted as standard in the United States. The subscripts N and C used hereinafter refer respectively to directions normal to and parallel with the basic chord of the airfoil section. Other subscripts have the usual significance. When applied to an entire wing or surface, the coefficients represent average values and shall be properly correlated with local conditions (load distribution) as required...
Էջ 133 - Engine breathers must discharge in a location that does not constitute a fire hazard in case foaming occurs and so that oil emitted from the line does not impinge upon the pilots
Էջ 123 - This shall be so at any speed which can be obtained without excessive control force, except that such speeds need not be greater than the appropriate maximum permissible speed or less than the minimum speed in steady unstalled flight.
Էջ 136 - ... cross-feed positions. (2) When more than one fuel tank is provided, and if safe operation depends upon the use of tanks in a specific sequence, the fuel tank selector controls shall be marked adjacent to or on the control to indicate to the flight personnel the order in which the tanks must be used.