The Method of Experimental Research into the Efficiency of the Working Process in High Speed Solid Fuel Ramjet Engines

The development of high-speed endoatmospheric aircraft requires improvement of their power units. Power units based on ramjet engines are considered to be the most efficient. The review of literature shows that the development of high-efficiency afterburner chambers for solid fuel ramjets is a priority task that requires a large number of experimental studies. The authors of the article have developed and tested a method of processing experimental data obtained through firing tests that use an attached air duct while simulating the inlet flow conditions approaching the real operating environment. The specific features of conducting firing tests using high enthalpy flow generators based on fired heaters are presented. Recommendations for selecting the analysis method for the results are developed. A mathematical model is proposed for determining the efficiency of the working process and the engine performance based on experimental data. The results of the study can be used for the evaluation of future ramjets at the firing test stage.

References

[1] Bakulin V.N., Dubovkin N.F., Kotova V.N., Sorokin V.A., Frantskevich V.P., Ianovskii L.S. Energoemkie goriuchie dlia aviatsionnykh i raketnykh dvigatelei [Energy-intensive fuel for aircraft and rocket engines]. Moscow, Fizmatlit publ., 2009. 320 p.

[2] Varenykh N.M., Shabunin A.I., Sarab’ev V.I., Khrisantov M.V., Shibanov S.V., Kalinin S.V. Osnovnye napravleniia razrabotki tverdykh pirotekhnicheskikh topliv dlia vozdushno-reaktivnykh dvigatelei s povyshennymi energoballisticheskimi kharakteristikami [The main directions of development of solid fuels for pyrotechnic jet engines with increased performance energoballisticheskimi]. Boepripasy i spetskhimiia [Ammunition and special chemicals]. 2013, no. 1, pp. 44–50.

[3] Integral’nye priamotochnye vozdushno-reaktivnye dvigateli na tverdykh toplivakh [Integral ram jet engines for solid fuels]. Ed. Ianovskii L.S. Moscow, Akademkniga publ., 2006. 343 p.

[4] Kharitonov A.M. Tekhnika i metody aerofizicheskogo eksperimenta. Chast’ 1. Aerodinamicheskie truby i gazodinamicheskie ustanovki [Techniques and methods aerophysical experiment. Pt. 1. Wind tunnels and gas dynamic installation]. Novosibirsk, NSTU publ., 2005. 220 p.

[5] Aleksandrov V.Iu., Aref’ev K.Iu., Il’chenko M.A., Ananian M.V. Issledovanie effektivnosti rabochego protsessa v malogabaritnykh generatorakh vysokoental’piinogo vozdushnogo potoka [Research of Workflow Efficiency in High-Enthalpy Air Flow Compact Generators]. Nauka i obrazovanie. MGTU im. N.E. Baumana [Science and Education. Bauman MSTU]. 2015, no. 8, pp. 75–86. Available at: http://technomag.bmstu.ru/doc/798965.html (accessed 01 September 2015).

[6] Trusov B.G. Programmnaia sistema TERRA dlia modelirovaniia fazovykh i khimicheskikh ravnovesii pri vysokikh temperaturakh [TERRA software system for modeling phase and chemical equilibria at high temperatures]. Tr. 3 Mezhdunarodnyi simpozium «Gorenie i plazmokhimiia» [Proc. of the 3rd International Symposium «Combustion and Plasmochemistry»]. Almaty, Kazakhstan, 24–26 August 2005. Kazakh National University publ., 2005, pp. 52–57.

[7] GOST 23851-79. Dvigateli gazoturbinnye aviatsionnye. Terminy i opredeleniia [State Standard 23851-79. Avia cas turbine engine. Terms and definitions]. Moscow, Standardinform publ., 1979.

[8] Young G.B.W. Basic Supersonic Ramjet Point-Design Performance. USA, California, Santa Monica, RAND Corporation, 1955. 49 p.

[9] Prokhorov A.N. Eksperimental’nye issledovaniia vliianiia geometricheskikh i rezhimnykh parametrov toplivnykh pilonov na effektivnost’ rabochego protsessa v kamerakh sgoraniia GPVRD. Diss. kand. tekh. nauk [Experimental study of the effect of geometrical and operational parameters of fuel pylons on workflow efficiency in the combustion chambers scramjet. Cand. of tech. sci. diss.]. Moscow, 2003. 232 p.

[10] Aleksandrov V.Iu. Teoreticheskii analiz i eksperimental’nye issledovaniia na nazemnykh stendakh protsessov smesheniia i goreniia v kamerakh sgoraniia primenitel’no k problemam sozdaniia i ispytanii giperzvukovykh dvigatelei. Diss. kand. tekh. nauk [The theoretical analysis and experimental research on the ground stands the processes of mixing and burning in combustion chambers in relation to the problems of creating and testing hypersonic engines. Cand. of tech. sci. diss.]. Moscow, 2003. 220 p.

[11] Konstruktsiia i proektirovanie kombinirovannykh raketnykh dvigatelei na tverdom toplive [The construction and design of composite rocket engines for solid fuels]. Ed. Sorokin V.A. Moscow, Bauman Press, 2014. 303 p.

[12] Aver’kov I.S., Aleksandrov V.Iu., Aref’ev K.Iu., Voronetskii A.V., Gus’kov O.V., Prokhorov A.N., Ianovskii L.S. Osobennosti opredelenie termodinamicheskikh parametrov rabochego tela priamotochnykh vozdushno-reaktivnykh dvigatelei pri nepolnom sgoranii topliva [Features of the definition of the thermodynamic parameters of the working medium ramjet engine during incomplete combustion of fuel]. Sbornik tezisov dokladov Vserossiiskoi nauchno-tekhnicheskoi konferentsii «Aviadvigateli 21 veka» [Abstracts of the All-Russian Scientific and Technical Conference «Aero Engines of 21 Century»]. Moscow, TsIAM im. P.I. Baranova publ., 2015, pp. 1117–1118.