成果報告書詳細
管理番号20160000000526
タイトル*平成27年度中間年報 航空機用先進システム実用化プロジェクト 次世代降着システム研究開発
公開日2016/7/7
報告書年度2015 - 2015
委託先名住友精密工業株式会社
プロジェクト番号P15005
部署名ロボット・AI部
和文要約
英文要約Title: Research and Development Project for Advanced Aircraft Systems toward Practical Application/Research and Development of Next Generation Landing System (FY2015-FY2017) FY2015 Annual Report

[Research and Development of Landing Gear Extension and Retraction System]
(1) System performance at laboratory environment
Prototype EHA (Electro-Hydrostatic Actuator) has been built and checked its operation time to evaluate system performance at laboratory environment. As the result of the test, it was demonstrated that the EHA achieves target operation time to extend and retract gear and door. In the next step of this research program, performance of the EHA at aircraft environment will be acquired and confirmed.
(2) Motor and Pump endurance
To minimize size and weight of the EHA system, pump is required to increase its discharge pressure to 5000psi which was conventionally 3000psi. The motor and pump has been subjected to endurance test to confirm its endurance at continuous high pressure operation. The motor and pump has achieved target endurance (15000 flight cycles).
(3) Software Model Base Design (MBD)
Development tool needed for MBD has been introduced in FY2015. By experiencing automated coding of typical control block for EHA using MBD, knowledge to build model has been obtained.

[Research and Development of Electric Taxiing System]
(1) Performed Taxing simulated Test and acuired the temperature change around the motor in Taxing operation.
Correlated the heat transfer simulation model with acquired temperature data, and improved the simulation model.

[Research and Development of Electro-Magnetic Brake System]
(1) Acquire characteristics of Magneto-Rheological Fluid(MRF)
(1-1) Torque characteristics (Relationship between rotation speed and brake torque caused by shear force within MRF)
(1-2) Specific heat capacity
(1-3) Thermal conductivity
(2) Study cooling method of MR brake
Performed simulation of heat transfer and cooling with natural cooling. Results show temperature of MRF rises higher than its flash point. Conclusion is that cooling system, such as cooling by water, and modification of MRF to improve heat resistance is necessary.
(3) Study application method of magnetic field to reduce resistant torque induced by viscosity of MRF when brake is not used
Four methods were simulated. All of them show force to reduce resistant torque is generated, but brake torque is generated at the same time.
ダウンロード成果報告書データベース(ユーザ登録必須)から、ダウンロードしてください。

▲トップに戻る