Comparison of Digital DATCOM and Wind Tunnel Data of a Winged Hybrid Airship’s Generic Model


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Use of low fidelity tools in designing subscale generic wind tunnel models is usually required to get first-hand knowledge about general trends of aerodynamic and stability parameters. Most of such tools are limited to well-defined conventional aircraft configurations. In the present work, aerodynamic and stability characteristics of a winged hybrid airship is explored at low subsonic speed by using Aircraft Digital DATCOM, which is based on semi-empirical methods for preliminary aircraft geometries. Spheroidal ellipsoidal shaped hull of the airship is modeled in DATCOM along with the geometrical details of wing and empennages. The prediction of zero lift drag coefficient, coefficient of lift and pitching moment is the focus of this paper. Except the drag coefficients, trends of analytical results compare well with experimental data.



Edited by:

R. Varatharajoo, F.I. Romli, K.A. Ahmad, D.L. Majid and F. Mustapha




A. Ul Haque et al., "Comparison of Digital DATCOM and Wind Tunnel Data of a Winged Hybrid Airship’s Generic Model", Applied Mechanics and Materials, Vol. 629, pp. 36-41, 2014

Online since:

October 2014




* - Corresponding Author

[1] G., Ilieva, J., Páscoa, A., Dumas, & M. Trancossi, MAAT–Promising innovative design and green propulsive concept for future airship's transport. Aerospace Science and Technology, 35, pp.1-14. (2014).

[2] C. Stockbridge, A. Ceruti and P. Marzocca, Airship Research and Development in the Areas of Design, Structures, Dynamics and Energy Systems', Int, l J. of Aeronautical & Space Sci. 13(2), 170–187, (2012).


[3] B. E., Prentice,R. P., Beilock, A. J., Phillips, and A. J Phillips, Economics of Airships for Perishable Food Trade, 5th International Airship Convention and Exhibition, 19-24 August 2005, Oxford, England.

[4] A. D. Andan, W. Asrar, and A. A. Omar, Investigation of Aerodynamic Parameters of a Hybrid Airship, J. Aircr., vol. 49, no. 2, p.658–662, Mar. (2012).

[5] A. U. Haque, W. Asrar, A. A Omar, E. Suleiman, and JS. M. Ali, Static longitudinal stability of a hybrid airship, Proc. 2014 11th Int. Bhurban Conf. Appl. Sci. Technol. Islamabad. Pakistan, 14th - 18th January, 2014, p.343–348, IEEE (Jan. 2014).


[6] B. Galbraith, DATCOM Predicted Aerodynamic Models, 2010. [Online]. Available: www. holycows. net.

[7] S. R., Vukelich, & J. E. Williams, The USAF stability and control digital DATCOM. AFFDL-TR-79-3032, WP-AFB, Ohio, USA. (1979).

[8] M. Nahon, Determination of undersea vehicle hydrodynamic derivatives using the USAF DATCOM. In OCEANS'93. Engineering in Harmony with Ocean. Proceedings pp.283-288, IEEE. (October, 1993).

[9] N. M., Jodeh, P. A., Blue, & A. A. Waldron, Development of small unmanned aerial vehicle research platform: modeling and simulating with flight test validation. In AIAA Modeling and Simulation Technologies Conference and Exhibit No. 2006-6261. (August, 2006).

[10] P. M. A. Ceruti, C. Stockbridge, G. Gaviraghi, Design, Stability & Control, and Docking in Support of MAAT Project, www. eumaat. info/app/download (2012).

[11] M. Munk, M., The Drag of Zeppelin Airships, NACA Report, 1991. Website: http: /www naca. central. canfield. ac. uk/ reports/1923/naca-report-117. pdf, Accessed: December (2013).

[12] A. Ceruti and P. Marzocca, A Conceptual Approach to Unconventional Airship Design and Synthesis, J. Aerosp. Eng., available online, (April. 2013).

[13] G.E. Carichner, and L. M., Nicolai, edited by Alexander Bell., Fundamentals of Aircraft and Airship Design, Volume II-Airship Design, USA, AIAA, 1801 Reston, VA 20191-4344, (2013).


[14] D. P. Raymer, Aircraft Design: A Conceptual Approach, 4th Edition. Reston: American Institute of Aeronautics and Astronautics, AIAA, (2010).

[15] S. F. Hoerner, Fluid Dynamic Drag. Bakerfield, CA: published by the author, (1965).