| Popis: |
This paper reviews the logic and dimensional analysis results leading up to correlation equations for parachute opening time, including the effects of canopy stiffness. An earlier expression for effective canopy stiffness is modified by leaving out the Poisson’s ratio term, and also expressing the equation in terms of dynamic pressure. The procedure described simplifies techniques previously developed and gives a more practical correlation formula. Other applications of the stiffness index are suggested, and an illustration is given for its use in tented structures. |
