Ingenuity is considered the Martian equivalent of the Wright Flyer. Its sustained flights on Mars proved that non-terrestrial powered flight is possible, even on planets with thin atmospheres. However, Ingenuity was small and carried no payload. Future planetary rotorcraft will be bigger and heavier to accomplish new scientific and exploratory goals. On dusty planets, the associated increase in rotor thrust poses a potential challenge well known to helicopter pilots who have flown in desert environments: dust clouds forming during take-off and landing due to rotor wash, referred to as brownout. This work evaluates the effectiveness of existing numerical simulation models in predicting the severity of this phenomenon for planetary rotorcraft. We compare the output of a CFD-based dust mobilization model with data recently gathered using image processing techniques of Ingenuity’s flights. The simulation results suggest that the sensitivity of the wall friction velocity to the rotorcraft height may be lower than previously assessed. We further evaluate the sensitivity of the total mass of mobilized dust to other model parameters such as the sandblasting efficiency and the saltation threshold velocity. Finally, we discuss the limitations of this comparison due to uncertainty in both the observation and the numerical model.


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    Titel :

    Comparing Planetary Helicopter Brownout Observations with Numerical Predictions for Ingenuity


    Beteiligte:
    D. Caprace (Autor:in) / E. Baker (Autor:in) / P. V. Diaz (Autor:in) / S. Yoon (Autor:in)

    Erscheinungsdatum :

    2024


    Format / Umfang :

    17 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Comparing Planetary Helicopter Brownout Observations With Numerical Predictions for Ingenuity

    Caprace, Denis-Gabriel / Baker, Ethan / Ventura Diaz, Patricia et al. | AIAA | 2024


    Planetary Helicopter Brownout Simulation of Ingenuity Using a Eulerian Dust Transport Model

    Caprace, Denis-Gabriel / Baker, Ethan / Diaz, Patricia Ventura et al. | AIAA | 2025



    Enhanced Numerical Simulations of Helicopter Landing Maneuvers in Brownout Conditions

    D Andrea, A. / Scorcelletti, F. / AHS International | British Library Conference Proceedings | 2010


    The Flow Physics of Helicopter Brownout

    Phillips, C. / Kim, H.W. / Brown, R.E. et al. | British Library Conference Proceedings | 2010