Apacs Badminton Racket Blog

i have recently experimented to figure terminal velocity of shuttlecock ie dropped out window i now have to work out Cd can anyone explain what this is all about i need to figure all out myself and have worked out terminal velocity it is just how to get correct Cd i worked out density of air for that day 0.012 have drag force 0 tv 5.952 what next?

I need to figure out drag coefficient of shuttlecock and am unsure of size scale to use as it is difficult to measure with all damn holes in stupid thing can anyone help please also can anyone clarify anything about Cd to me as it is confusing all search engines seem to say different things thankyou