Aerothermal Analysis of Insulation to Protect Exhaust Ducts of a Pusher Turbo Prop Engine Aircraft

Vinay, CA; Bhaskar, Chakravarthy

doi:10.1007/978-81-322-2743-4_79

Cited by 2 publications

(2 citation statements)

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“…Figure 6 shows a good exhaust duct design with longer cutback length, which favors flow turning at the inner radius, and thus improves performance for aircraft configuration. To design exhaust stubs for different aircrafts, special attention should be paid to the exhaust stub angle, for hot exhaust gas would impinge on aircraft surfaces and structures, and exhaust stubs should not create any additional external aerodynamic drag [11][12][13][14][15]. The design of internal flow ducts should minimize the pressure loss induced by the flow separation from the internal walls of the duct.…”

Section: Sizing Of Exhaust Stubmentioning

confidence: 99%

Engine Exhaust Stub Sizing for Turboprop Powered Aircraft

Vinay¹,

Narayanappa²,

Yepuri³

2023

PEET

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Turboprop engines are widely used in the commuter or light transport aircraft (LTA) turboprop engines, because they are more fuel efficient than the propeller, which has a low jet velocity, at flight velocities below 0.6 Mach. For short distances, turboprop engines are more fuel efficient than jet engines, because the light weight assures a high power output per unit of weight. In addition, turboprops are known for their efficiency at medium and low altitudes. Turboprop engines require an exhaust stub (or nozzle) to duct the engine exhaust flue gas outboard of the aircraft. The design of these exhaust stubs is dictated primarily by the aircraft configuration. During the exhaust stub design, full flow at bends and in diffusing sections must be realized by following the established practice for the design of internal flow ducts. Otherwise, the flow will separate from the wall, causing unnecessary pressure loss and reducing the effective flow area. This paper discusses some of the many variations in exhaust stub design, and examines how they influence the performance of the engine, the performance of the aircraft, and the manufacturing aspect. The authors carried out a detailed analysis on the influencing parameters, such as the location, orientation, flange dimension, and geometric effective area of exhaust port. On this basis, the authors determined the jet temperature at exhaust stub exit and temperature at exhaust stub exit plane and nacelle midsection were determined at both static and cruise condition, laying the data basis for further analysis on the exhaust temperature effects over the nacelle and aircraft surfaces.

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Section: Sizing Of Exhaust Stubmentioning

confidence: 99%

Engine Exhaust Stub Sizing for Turboprop Powered Aircraft

Vinay¹,

Narayanappa²,

Yepuri³

2023

PEET

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show abstract

“…In order to evaluate the influence of different pipe turning radius [1][2] and the aerodynamic performance of pipe calibration, and judge whether the pipe is acceptable, numerical simulation is carried out by CFD method [3][4],however, different boundary and flight condition depend on different result, it can be sure of reliability of CFD method, there are some paper about inlet paper [6].at first, the fluid calculation model is established of the whole aircraft, according to different R/D and pipe different calibration depth, R display turning radius of pipe. D display diameter, the flow rate, drag force and flow field are analyzed [5] ,and the relevant conclusion is drawn, and finally provide important reference value for the design of ram air outlet pipe.…”

Section: Introductionmentioning

confidence: 99%

Study on aerodynamic performance of outlet pipe of ram air system

liu,

Xia

2024

Fourth International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024)

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Aerothermal Analysis of Insulation to Protect Exhaust Ducts of a Pusher Turbo Prop Engine Aircraft

Cited by 2 publications

References 0 publications

Engine Exhaust Stub Sizing for Turboprop Powered Aircraft

Engine Exhaust Stub Sizing for Turboprop Powered Aircraft

Study on aerodynamic performance of outlet pipe of ram air system

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