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BUG: update flight simulation logic to include burn start time #778

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Merged
merged 2 commits into from
Mar 4, 2025
Merged

BUG: update flight simulation logic to include burn start time #778

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fe3a243
BUG: update flight simulation logic to include burn start time in con…
Gui-FernandesBR Mar 4, 2025
4d5339e
DEV: updates changelog
Gui-FernandesBR Mar 4, 2025
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4 changes: 2 additions & 2 deletions rocketpy/simulation/flight.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1451,7 +1451,7 @@ def u_dot(self, t, u, post_processing=False): # pylint: disable=too-many-locals
# Determine lift force and moment
R1, R2, M1, M2, M3 = 0, 0, 0, 0, 0
# Determine current behavior
if t < self.rocket.motor.burn_out_time:
if self.rocket.motor.burn_start_time < t < self.rocket.motor.burn_out_time:
# Motor burning
# Retrieve important motor quantities
# Inertias
Expand Down Expand Up @@ -1788,7 +1788,7 @@ def u_dot_generalized(self, t, u, post_processing=False): # pylint: disable=too
speed_of_sound = self.env.speed_of_sound.get_value_opt(z)
free_stream_mach = free_stream_speed / speed_of_sound

if t < self.rocket.motor.burn_out_time:
if self.rocket.motor.burn_start_time < t < self.rocket.motor.burn_out_time:
drag_coeff = self.rocket.power_on_drag.get_value_opt(free_stream_mach)
else:
drag_coeff = self.rocket.power_off_drag.get_value_opt(free_stream_mach)
Expand Down