21 Questions
What method is used for trajectory optimization to find the optimal command satisfying the Hamiltonian without iterative changes?
Indirect method
What does the staging → Index ratio characterize for a system's performance?
Dry mass and mass with propellant
What is the primary goal of trajectory optimization?
Maximizing/minimizing a criterion to achieve a goal
What does the shooting method involve in trajectory optimization?
Solving a boundary value problem by reducing it to an initial value problem
What is the primary focus of flight mechanics?
Ensuring safe separation during different flight phases
What does the study of transient phases in flight mechanics involve?
Solving dynamic equations with perturbations
Which phase in flight mechanics includes problems related to engine extinction and acceleration drop?
Stage separation phases
What is a critical consideration during the micro-acceleration phase in flight mechanics?
Minimizing propellant sloshing and bubble formation
What is a key factor in the re-entry phase as it relates to flight mechanics?
Dynamic phenomena of POGO and Sloshing
What is a significant concern in the ground phase of flight mechanics?
Integrating and transferring stages
Which phase in flight mechanics is most impacted by strong aerodynamic forces?
Atmospheric phase
What does the propelled exo-atmospheric phase in flight mechanics involve after jettison?
Correcting trajectory through AOA adjustment
What is a critical consideration during the waiting phase in flight mechanics?
Optimizing launcher efforts during transfer
What does the ballistic phase involve at end-of-life disposal in flight mechanics?
Ensuring safe separation during different flight phases
During the flight mechanic study, which phase starts with the end of a pseudo steady state and ends with the beginning of the next steady state?
Transient phase
What dynamic phenomena may occur during the propelled exo-atmospheric phase after jettison?
POGO & Sloshing
Which phase of the flight mechanic is characterized by strong aerodynamic forces and has the most impact on launcher designing?
Atmospheric phase
What is one of the problems to analyze during the stage separation phases?
Acceleration drop (relaxation of structural load)
What is a necessity during engine ignition in flight mechanic study?
Propellants are well positioned
What perturbations need to be robust in flight mechanic study?
Residual thrust, Aerodynamic, friction, static & dynamic unbalance
What are campaigns aimed at observing reentry in flight mechanic study focused on?
Improving knowledge of reentry predictive models
Test your knowledge on spacecraft performance, trajectory optimization, and vehicle orientation in space missions. Explore concepts such as staging index ratio, fuel consumption, mass at liftoff, payload mass, orbit precision, Pontryagin's optimal control, and trajectory orientation.
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