An analysis of factors governing the glass transition temperatures of polymers based on a review of available measurements

Factors governing the glass transition temperature, (Tg), of a polymer, namely, chemical composition, side-chain structure, cross-linking, stereoregularity, shape, molecular weight, crystallinity, diluents, and copolymerisation are qualitatively and briefly described. The effect of temperature on physical properties near the Tg and the...

Wind tunnel force and moment tests on a 1/12 scale model of the H.J.T-16 (basic jet trainer aircraft) at speeds up to M=0.82

Tests have been made in the 8' x 6' ' Transonic Tunnel to determine the aerodynamic characteristics of the Hindustan Aircraft Ltd. H.J.T-16 over the possible flight ranges of incidence, sideslip, and Mach number. Various configurations were tested to investigate the aircrafts longitudinal and directional stabilities, elevator, tailplane and...