Recent content by klokes

Just received a mail regarding this question from the author of the discussed article, effectively solving the problem; *QUOTE* Jacob Using constructed vs nominal surface area is a matter on convention. You can use either. But most parachute designers use the nominal area (ie S0)...

Sorry, the drag factor was supposed to be included in the equation. (fixed) The drag factor for a hemispherical parachute with vents is somewhere about 0,7-0,8. My question still remains; does the aerodynamics-professor provide the wrong answer?

Homework Statement In designing a hemispherical parachute, i´ve come across conflicting information regarding whatever to use a constructed (ortographical projection) vs. a nominal diameter in calculating the necessary area required in the parachute. Sources using constructed diameter in...