倾转四旋翼机高效低噪旋翼外形优化设计

doi:10.7527/S1000-6893.2025.32183

Abstract

Abstract:

Quad-tiltrotor aircraft experience complex unsteady noise characteristics due to the presence of multi-vortex and multi-component aerodynamic interference among various components during typical flight modes. To obtain the high-efficiency and low-noise rotor shape combined with helicopter mode and fixed-wing mode， the computation methods of rotor aerodynamic and noise considering the aerodynamic environment of the whole aircraft are established. The sensitivity analysis of the tip shape parameters to the aerodynamic and noise characteristics of the rotor is carried out. Based on the improved Latin hypercube sampling method and the genetic algorithm， the high-efficiency/low-noise shape design optimization process of the forward and rear rotors is established. A set of high-efficiency and low-noise forward and rear rotor shapes are obtained and are further compared with the reference ones. The results show that the aerodynamic and noise characteristics of the rotor are sensitive to the blade tip shape， which can severely affect the hover efficiency and cruise efficiency. After optimization， the hover efficiencies of the forward rotor and the rear rotor are increased by 1.5 % and 1.0 %， and the noise pressure level is reduced by 1.8 dB. In the fixed-wing mode， the cruise efficiencies of the forward rotor and the rear rotor are increased by 10.1 % and 9.0 %， and the noise pressure level is reduced by 2.2 dB.

Key words: quad-tiltrotor aircraft, aerodynamic interference, aerodynamic performance, noise characteristics, optimization design

CLC Number:

V211.52

Xiayang ZHANG, Bin LUO, Xi CHEN, Tao YANG. Optimization design of high-efficiency and low-noise rotor layout for quad-tiltrotor aircraft[J]. Acta Aeronautica et Astronautica Sinica, 2025, 46(S1): 732183.

Figures/Tables 21

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状态	前/后掠角/（°）	前/后掠位置	下反角/（°）	下反位置	前/后旋翼前飞效率
1					0.451 5/0.570 2
2	/15	/0.9R			0.458 4/0.572 9
3	/25	/0.9R			0.459 6/0.571 0
4	/35	/0.9R			0.454 1/0.569 4
5	5/25	0.8R/0.9R			0.459 8/0.577 3
6	10/25	0.8R/0.9R			0.503 2/0.589 1
7	15/25	0.8R/0.9R			0.469 0/0.573 5
8	10/25	0.7R/			0.473 0/0.574 4
9	10/25	0.8R/			0.503 2/0.589 1
10	10/25	0.8R/0.9R			0.503 2/0.589 1
11	10/25	0.8R/0.9R	-10	0.9R	0.438 5/0.548 3
12	10/25	0.8R/0.9R	10	0.9R	0.510 8/0.591 3
13	10/25	0.8R/0.9R	20	0.9R	0.489 2/0.576 6
14	10/25	0.8R/0.9R	30	0.9R	0.453 1/0.555 9
15	10/25	0.8R/0.9R			0.503 2/0.589 1
16	10/25	0.8R/0.9R	10	0.8R	0.489 0/0.583 0
17	10/25	0.8R/0.9R	10	0.9R	0.510 8/0.591 3

状态	编号命名	前/后掠位置	前/后掠角/（°）	下反位置	下反角/（°）
1	TS01	/0.9R	/15
2	TS02	/0.9R	/25
3	TS03	/0.95R	/25
4	TS04	/0.85R	/25
5	QS01	/0.9R	/25
6	QS02	0.8R /0.9R	5/25
7	QS03	0.8R /0.9R	10/25
8	QS04	0.7R /0.9R	10/25
9	LS01			0.90R	5
10	LS02			0.90R	10
11	LS03			0.95R	10
12	LS04			0.85R	10

桨叶	前旋翼巡航效率	后旋翼巡航效率
初始桨叶	0.453 5	0.570 2
优化桨叶	0.499 2	0.621 3

Optimization design of high-efficiency and low-noise rotor layout for quad-tiltrotor aircraft

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