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MIL-STD-1374A, MILITARY STANDARD: WEIGHT AND BALANCE DATA REPORTING FORMS FOR AIRCRAFT (INCLUDING ROTORCRAFT) (30 OCT 1977) [S/S BY SAWE-RP8]., This document covers standard weight statements and forms Parts I, II, and III hereof, for procurement of weight and balance data for aircraft (including rotorcraft), states the principles followed in the formulation of these standards, furnishes instructions where necessary for uniform compilation of the required weight and descriptive data, and provides a glossary of terms for which definitions may not be self-evident on the weight statements and forms.Product Code:SAE AIR1168/2
Title:Heat and Mass Transfer and Air-Water Mixtures
Issuing Committee:Ac-9 Aircraft Environmental Systems Committee
Scope:Heat transfer is the transport of thermal energy from one point to another. Heat is transferred only under the influence of a temperature gradient or temperature difference. The direction of heat transfer is always from the point at the higher temperature to the point at the lower temperature, in accordance with the second law of thermodynamics. The fundamental modes of heat transfer are conduction, convectoin, and radiation. Conduction is the net transfer of energy within a fluid or solid occurring by the collisions of molecules, atoms, or electrons. Convection is the transfer of energy resulting from fluid motion. Convection involvs the processes of conduction, fluid motion, and mass transfer. Radiation is the transfer of energy from one point to another in the absence of a transporting medium. In practical applications several modes of heat transfer occur simultaneoulsy. For example, aerodynamic heating of a vehicle surface includes convection to the surface, radiation away from the surface, and conduction through the surface structure. Since the three modes of heat transfer obey different laws, a real insight into such a problem can be gained only after they have been studied separately.