Analysis of the propellers-airframe interaction of the light transport aircraft
https://doi.org/10.26467/2079-0619-2021-24-5-76-88
Abstract
In the design of multi-engine aircraft, one of the important issues is the interaction between the propellers and airframe configuration components, especially in take-off and go-around procedure modes. Modern propeller-driven aircraft concepts in the pulling configuration are characterized by a high disk loading and an increased number of propeller blades used to increase cruising speed and reduce excessive noise. The first problem arising due to high disk loading is the direct impact of forces by operating propellers (thrust, normal force) on fixed-wing stability, especially at angles of attack different from a zero value. The second one involves a high-energy level of the propeller slipstream, having a significant indirect impact on the aircraft’s aerodynamics, stability and controllability. This impact is primarily associated with the interaction of propellers slipstream with other aircraft’s configuration elements. The complexity of taking into account the slipstream-wing interaction and other airframe components stipulated the application of experimental methods to study the problems of propellers – airframe interaction while designing propeller-driven aircraft configurations. This article presents an analysis of the experimental studies results of the operating propellers- airframe interaction for a light twin-engine transport aircraft. The aerodynamic aircraft’s configuration is executed using the conventional pattern of a high-wing and the carrier-on deck type empennage. The high-lift wing device is a fixed-vane doubleslotted flap. The wind-tunnel tests of the model in the cruising, takeoff and landing configurations were carried out in TsAGI lowspeed wind-tunnel T-102. Measurement of forces and moments, acting on the model, was performed by means of an external sixcomponent wind-tunnel balance. Measurement of forces and moments, acting on the propeller, was conducted using strain gauge weighers installed inside the engine nacelles of power plant simulators. The simultaneous combined use of external and internal balances allowed researchers to determine the direct and indirect contribution of operating propellers to the model longitudinal aerodynamic characteristics under variation of loading factor B ranging from 0 to 2.
About the Author
Yu. S. Mikhailov
Central Aerohydrodynamic Institute (TsAGI)
Russian Federation
Russian Federation
Yuriy S. Mikhailov, Candidate of Technical Sciences, Leading Research Worker
Zhukovsky
References
1. Groeneweg, J.F. and Bober, L.J. (1988). NASA advanced propeller research. NASA TM101361, 35 p.
2. Whitlow, J.B. and Sievers, G.K. (1988). NASA advanced turboprop research and concept validation program. NASA TM-100891, 22 p.
3. Balabuyev, P., Bogdanov, O., Kudryavtsev, V. and Pustovoytov, V. (2002). An-70 STOL aircraft characteristics at high angles of attack and take-off and landing characteristics. 23rd International Congress of Aeronautical Sciences. ICAS, 6 p. Available at: https://www.icas.org/ICAS_ARCHIVE/ICAS2002/PAPERS/P1.PDF (accessed: 23.07.2021).
4. Reckzeh, D. (2008). Aerodynamic design of the A400M high-lift system. 26th Congress of The International Council of the Aeronautical Sciences. ICAS, 8 p. Available at: http://www.icas.org/ICAS_ARCHIVE/ICAS2008/PAPERS/362.PDF (accessed: 23.07.2021).
5. Petrov, A.V. (2018). Aerodinamika transportnykh samoletov korotkogo vzleta i posadki s energeticheskimi sistemami uvelicheniya poyemnoy sily [Aerodynamics of short takeoff and landing of cargo aircraft with power systems for increasing lift]. Moscow: Innovatsionnoye mashinostroyeniye, 736 p. (in Russian)
6. Austin, R. (2010). Unmanned aircraft systems: UAVS design, development and deployment. Wiley & Sons Ltd, 372 p.
7. Červinka, J., Kulhánek, R., Pátek, Z. and Kumar, V. (2016). Simulation of propeller effect in wind tunnel. 30th Congress of the International Council of the Aeronautical Sciences. ICAS, 6 p. Available at: http://www.icas.org/ICAS_ARCHIVE/ICAS2016/data/papers/2016_0593_paper.pdf (accessed: 23.07.2021).
8. Petrov, A.V., Stepanov, Y.G. and Shmakov, M.V. (2004). Development of a technique and method of testing aircraft models with turboprop engine simulators in a small-scale wind tunnel – Results of tests. Acta Polytechnica, vol. 44, no. 2, p. 27–31. DOI: 10.14311/530
9. Pope, A., Barlow, J.B. and Rae, W.H. (1999). Low-speed wind tunnel testing. 3rd ed. John Wiley & Sons Inc., 728 p.
10. Drela, M. and Youngren, H. (2011). XFOIL 6.9 user primer. XFOIL Subsonic Airfoil Development System. Available at: http://web.mit.edu/drela/Public/web/xfoil/ (accessed: 12.08.2021).
11. Raymer, D. (1992). Aircraft Design: A Conceptual Approach. 2nd ed. AIAA Education Series, American Institute of Aeronautics and Astronautics, Inc., 729 p.
Review
For citations:
Mikhailov Yu.S. Analysis of the propellers-airframe interaction of the light transport aircraft. Civil Aviation High Technologies. 2021;24(5):76-88. (In Russ.) https://doi.org/10.26467/2079-0619-2021-24-5-76-88
Views:
427
Email this article 
