Finding Reentry Aerodynamics Characteristics

Thread starter aero5682
Start date Jan 30, 2018
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Aerodynamics

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SUMMARY

This discussion centers on the methodologies for determining aerodynamic characteristics during reentry, specifically focusing on the use of simulations and corrective factors. Participants emphasize that while aerodynamic equations provide a foundation, they often lack precision, necessitating the use of simulations and iterative testing to refine predictions. Key aerodynamic characteristics discussed include ballistic coefficient and coefficient of drag, with a consensus that corrective factors are essential for improving model accuracy based on experimental validation. The iterative process involves modeling, wind tunnel testing, and adjusting simulations to align with empirical data.

PREREQUISITES

Understanding of aerodynamic equations and their limitations
Familiarity with computational fluid dynamics (CFD) simulations
Knowledge of wind tunnel testing methodologies
Awareness of turbulence modeling techniques, such as the k-ε model

NEXT STEPS

Research the process of validating aerodynamic models through wind tunnel experiments
Explore the application of corrective factors in ballistic trajectory predictions
Study advanced turbulence modeling techniques in computational fluid dynamics
Investigate NASA's methodologies for atmospheric modeling and adjustments during reentry

USEFUL FOR

Aerospace engineers, researchers in fluid dynamics, and professionals involved in spacecraft design and reentry trajectory prediction will benefit from this discussion.

Feb 12, 2018

aero5682

Thats really interesting, and helpful. I know from making planes in simulations it seems like its all about balance and tradeoffs. I couldn't imagine working it out for every situation. It seems like the best you can do is do it the best you can and then just try it out