Abstract
Ice accretion on aerodynamic surfaces can lead to a decrease in stall angle, an increase in drag and damage from shed-ice. These conditions have resulted in incidents and sometimes fatal accidents over the years. In rotorcraft, the high centrifugal forces on the rotor may serve as a natural deicing mechanism but can lead to uneven ice shedding, causing rotor imbalances and vibrations. Ice shedding from a rotor blade can also result in ice hitting other blades, the fuselage or tail rotor. Numerical methods are an important tool in predicting in-flight ice formation and is a vital tool in the design of Ice Protection Systems (IPS). The goal of this paper is to develop a computationally inexpensive approach to determine ice shedding time and location and analyze the possible impact zones for a helicopter in forward flight.
| Original language | English |
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| Title of host publication | 2018 Atmospheric and Space Environments Conference |
| Place of Publication | Reston, VA |
| DOIs | |
| Publication status | Published - 24 Jun 2018 |
| Event | 10th AIAA Atmospheric and Space Environments Conference, 2018 - Atlanta, United States Duration: 25 Jun 2018 → 29 Jun 2018 |
Conference
| Conference | 10th AIAA Atmospheric and Space Environments Conference, 2018 |
|---|---|
| Country/Territory | United States |
| City | Atlanta |
| Period | 25/06/18 → 29/06/18 |
Funding
The authors are appreciative for the financial support of the NSERC-Lockheed Martin-Bell Helicopter Industrial Research Chair. We are also thankful to Compute Canada and CLUMEQ for the use of their supercomputer resources.
Keywords
- helicopter blade
- airframes
- rotorcrafts
- blade element momentum theory
- ice protection systems
- aerodynamic characteristics
- angle of attack
- body reference frame
- principal stresses
- quaternions