Test Results of Reflux-Cooled Electromechanical Actuator

Schneider, Michael G.; Thomson, Scott M.; Bland, Timothy J.; Yerkes, Kirk L.

doi:10.4271/942176

Cited by 5 publications

(4 citation statements)

References 4 publications

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“…Heat management is crucial for the actuator motors, as increased operating temperatures can cause (i) increases in the resistance of the copper windings, which reduces efficiency, (ii) decreases in the reliability of the insulation material around the windings, reducing longevity, and (iii) induce losses in the magnetic materials of the motor, further reducing efficiency [92]. The heat loads produced by the controller power electronics are typically of the same order of magnitude as the motor itself [93]. Excessive heat produced by the actuators could also pose a threat to the surrounding airframe structure and systems.…”

Section: Flight Control and Other Actuatorsmentioning

confidence: 99%

Aircraft thermal management: Practices, technology, system architectures, future challenges, and opportunities

Heerden

Judt

Jafari

et al. 2022

Progress in Aerospace Sciences

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Section: Flight Control and Other Actuatorsmentioning

confidence: 99%

Aircraft thermal management: Practices, technology, system architectures, future challenges, and opportunities

Heerden

Judt

Jafari

et al. 2022

Progress in Aerospace Sciences

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“…Calculated temperature, pressure, and density of the air before the entrance of flow channel under given flight phases 6 are shown in Table 6.…”

Section: Cooling Performance Of the Ema Based On Two Different Heat P...mentioning

confidence: 99%

“…Traditionally the electronics on aircrafts can be cooled by bleed air from engine, 5 however, using bleed air will reduce the aircraft thrust and flight performance. Phase change materials (PCM) was used to improve peak heat absorption, 3,6,7 while the PCM could only act as a buffer of the thermal shock for lowering the temperature peak value of the EMA, and an efficient cooling approach and the heat sink are still needed.…”

Section: Introductionmentioning

confidence: 99%

“…Aircraft skin can be used as heat sinks of the EMA. A two-phase thermosyphon cooler and heat pipes were used to transfer the heat from heat sources to aircraft skin, 3,6,8 however, aircraft skin temperature is affected by flight altitude and Mach number. When the flight altitude is between 0 and 16 km and the Mach number is between 0.6 and 2.1, the skin temperature can reach 220-450 K. 5 However, the allowable working temperature of electronics like motor and insulated gate bipolar transistor (IGBT) module is generally around 253-423 K. If the skin temperature is beyond the range of the EMA allowable working temperature, aircraft skin can't be used as heat sinks of the EMA.…”

Section: Introductionmentioning

confidence: 99%

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Numerical research on the cooling performance of an aircraft electromechanical actuator based on heat pipes-fuel and heat pipes-ram air cooling conception

Lian

Zhang

Wan

2022

Advances in Mechanical Engineering

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Numerical research is carried out on the cooling performance of an aircraft electromechanical actuator (EMA) using heat pipes. The theoretical model is established to describe the heat transfer processes in the EMA, which is validated by comparing the numerical and experimental results. The heat transfer characteristics of the EMA using two different cooling methods, heat pipes-fuel and heat pipes-ram air, are studied by numerical simulation. For the heat pipes-fuel cooling method, impact of the coolant flow velocity (0–0.015 m/s) on the cooling performance of the EMA is studied, based on which fins are designed on the condenser of heat pipes to improve the cooling performance. The results show that it is an efficient way to cool the electromechanical actuator with heat pipes-fuel cooling method and the heat dissipation rate of the EMA can be improved by 28.8% by using fins. In addition, the heat pipes-ram air cooling method could cool the EMA efficiently with the ram air temperature properly controlled.

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Study of heat pipe in motor cooling: A review

Chen

Jia

et al. 2021

E3S Web Conf.

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The heat pipe as one of the most efficient heat exchanger device is used in many thermal engineering applications. Through sufficient literature research and summary, a comprehensive and systematic analysis of the application of heat pipe cooling technology in motor cooling is provided. The basic principles and key technologies of heat pipe cooling technology is introduced. What’s more, various factors affecting the cooling efficiency of heat pipes and two main types of heat pipe applications in motor cooling are discussed. Finally, the current status of research on heat pipe cooling motors at home and abroad are reviewed.

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Test Results of Reflux-Cooled Electromechanical Actuator

Cited by 5 publications

References 4 publications

Aircraft thermal management: Practices, technology, system architectures, future challenges, and opportunities

Aircraft thermal management: Practices, technology, system architectures, future challenges, and opportunities

Numerical research on the cooling performance of an aircraft electromechanical actuator based on heat pipes-fuel and heat pipes-ram air cooling conception

Study of heat pipe in motor cooling: A review

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