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Smart Helicopter Rotors pp 221–249Cite as

Dynamic Stall Alleviation Using Active Twist

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Abstract

In the previous chapters, moderate speed regimes of the helicopter have been explored, where flow separation and stall is not so important. However, it is possible that substantial flow separation on the rotor may cause very high levels of vibrations which active twist may not be able to reduce. The current chapter presents a methodology to directly suppress the flow separation-induced vibration in a helicopter rotor. As we shall see in this chapter, large stroke is needed to suppress vibration induced by stalled flow which then needs application of new and novel piezoceramics. Emerging materials such as single-crystal piezoceramics have a potential to meet the increasing demand of stroke in smart material applications. This chapter addresses the problem of vibration suppression using both single-crystal piezoceramics and soft piezoceramics.

Keywords

  • Rotor Blade
  • Rotor Disk
  • Baseline Case
  • Vibration Reduction
  • Actuator Failure

These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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  • DOI: 10.1007/978-3-319-24768-7_11
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Author information

Authors and Affiliations

  1. Department of Aerospace Engineering, Indian Institute of Science, Bangalore, India

    Ranjan Ganguli

  2. Department of Aeronautical Engineering, Sardar Vallabhbhai Patel Institute of Technology, Raju Pura Village, Vasad, India

    Dipali Thakkar

  3. Advanced Composites Division, CSIR-National Aerospace Laboratories, Bangalore, India

    Sathyamangalam Ramanarayanan Viswamurthy

Authors
  1. Ranjan Ganguli
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  2. Dipali Thakkar
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  3. Sathyamangalam Ramanarayanan Viswamurthy
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Correspondence to Ranjan Ganguli .

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Ganguli, R., Thakkar, D., Viswamurthy, S.R. (2016). Dynamic Stall Alleviation Using Active Twist. In: Smart Helicopter Rotors. Advances in Industrial Control. Springer, Cham. https://doi.org/10.1007/978-3-319-24768-7_11

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  • DOI: https://doi.org/10.1007/978-3-319-24768-7_11

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-24766-3

  • Online ISBN: 978-3-319-24768-7

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