Correlation of theory and experiment for propfan inlets

Lyman, V.; Hancock, J. P.

doi:10.2514/6.1986-1628

Cited by 3 publications

(2 citation statements)

References 1 publication

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“…On the other hand, because of the special s-shaped inlet port shape, airflow diffuses in the s-shaped inlet while goes through the large curvature curve, leading to boundary layer separation and secondary flow when strong adverse pressure gradient is serious, which causes large export total pressure distortion [1]. Flow control is a research hotspot in the field of aeronautics and astronautics in recent years [2,3], and effective inlet flow control technology is of great significance to improve the inlet working condition and the efficiency of aircraft propulsion, especially in recent years, flow field state research and flow control method of s-shaped inlet appear constantly [4,5], related research is very active.…”

Section: Introductionmentioning

confidence: 99%

S-shaped Inlet Flow Characteristics Test Rig Design and Experimental Research

Li¹,

Li²,

Chao³

et al. 2017

dtmse

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Abstract. An inlet flow characteristics test bench was designed for the high offset s-shaped inlet. Parametric design method was used in the design of direct-connect contraction. Numerical simulation results showed export velocity of the designed contraction distributed uniformly, the boundary layer was thin, which had good air contraction effect. Steady state flow characteristics test of the s-shaped inlet was carried out on the inlet test bench, and effectively verified the performance indicators of it. Test results showed that an obvious low pressure area existed on the bottom wall after the first corner of the s-shaped inlet. With the increase of inlet Mach number, the exit flow field quality deteriorated. When the inlet Mach number was 0.72, the export distortion index DC 60 was over 17%, which could not meet the needs of normal work of the engine.

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Section: Introductionmentioning

confidence: 99%

S-shaped Inlet Flow Characteristics Test Rig Design and Experimental Research

Li¹,

Li²,

Chao³

et al. 2017

dtmse

View full text Add to dashboard Cite

show abstract

“…Also, flow conditions will make change when the planes takeoff, land or change the flight condition, which can lead to the corresponding change inside of the inlet flow, further affect the performance of the engine parts and even the whole machine. The study of flow characteristic of inlet started early abroad; however, the in-depth study of S-shaped inlet begins with a jet plane, and then has been applied on the cruise missile [4][5][6][7][8][9][10][11][12] . Plas [13] systematically studied the boundary layer suction for promoting the performance of the system, the results show that the boundary layer suction can reduce fuel consumption by a few percentage points, and the distortion along the piping is the main reason for the overall performance.…”

Section: Introductionmentioning

confidence: 99%