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Mathinline
bodyF_{D, main} = \frac{1}{2} \rho 1.225 \frac{kg}{m^3} C_{D, eff, main} (0.96*(1.4478m)^2*\pi) (6.5 \frac{m}{s})^2 = (24 kg)*(9.81 \frac{m}{s^2})

CD,eff,main ≈ 1.44

Then, given its CdS of approximately 9, the main will definitely take all of the load of the dry rocket, so we can calculate for landing velocity:

Mathinline
bodyF_{D, main} = \frac{1}{2}*1.225 \frac{kg}{m^3}* 1.44 * (0.96*(1.4478 m)^2 * \pi) *V^2 = m_{dry}*g40.75 kg * 9.81 \frac{m}{s^2}

V ≈ 8.47 m/s = 28 ft/s

This is 

2 Because Raziel separated in two locations rather than just one, this number may vary from what will be seen on Hermes, which has a single separation point and a different height. We're using it here as an approximation for right now. One idea is to use a pitot tube to test for wind speed and rig the parachute up on a windy day with a fish scale or load cell. If a convenient opportunity during spring semester presents itself for this, we can do that. Or we can just use new flight test data from when we fly it (assuming it works...)

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