From e5c75334b08313de1a2bfbeda15dd22571120187 Mon Sep 17 00:00:00 2001 From: MateusStano Date: Tue, 9 Apr 2024 17:59:22 +0200 Subject: [PATCH] ENH: use mass_flow_rate instead of differentiate --- rocketpy/simulation/flight.py | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/rocketpy/simulation/flight.py b/rocketpy/simulation/flight.py index 77632d2f2..6959c1698 100644 --- a/rocketpy/simulation/flight.py +++ b/rocketpy/simulation/flight.py @@ -1645,8 +1645,8 @@ def u_dot_generalized(self, t, u, post_processing=False): # Retrieve necessary quantities rho = self.env.density.get_value_opt(z) total_mass = self.rocket.total_mass.get_value_opt(t) - total_mass_dot = self.rocket.total_mass.differentiate(t) - total_mass_ddot = self.rocket.total_mass.differentiate(t, order=2) + total_mass_dot = self.rocket.motor.total_mass_flow_rate(t) + total_mass_ddot = self.rocket.motor.total_mass_flow_rate.differentiate(t) ## CM position vector and time derivatives relative to CDM in body frame r_CM_z = ( -1