D " TIC. gforeign TECHNOLOGY DIVISION II 13. Approved for public Telease; Distribution unlimited. THE THIRD GENERATION OF

Transcription

1 M [I; FILE COPY FTD-ID(RS)T LO gforeign TECHNOLOGY DIVISION II THE THIRD GENERATION OF SOVIET CIVILIAN-USE TURBOFAN ENGINES by Xiao Ming D " TIC Approved for public Telease; Distribution unlimited. II 13

2 GRAPHICS DISCLAIMER All figures, graphics, tables, equations, etc. merged into this translation were extracted from the best quality copy available. t_ r 1._ 1: t..., ion/ " iy Codes.. d/or,cial i/

3 eiljine is ihi-td I led a wind turbine starter, with a starting time of 55, secoiids. Cuirently, relatively little synthetic naterial is used for this enviu. but in the future, carbon fiber fan vanes and other compoents. ahd &5?blies made of synthetic material will be used. The D-36 is a high bypass ratio turbofan enaine that the Soviet Uoi began to develop in the beginning of the seventies. The main characteristics of this engine are that it has a life as long as 18,000 hours; this was achieved by the use of new technology and new materials, as well as by the installation of additional safety structures and a warning installation. 7h noise of the engine is low, which was realized by the improvement of the design of the inner and outer cover and the addition of noise insulating material, by increasing the axial gap between the fan rotor vanes and the stator vanes, as well as by a well thought-out accommodation of the numbers of rotor vanes and stator vanes. In addition, the quantity of pollutants exhausted from this engine is small, and is able to meet the pertinent standards of international civilian aeronautics organizations. Figure 3 shows the external appearance of the eginie. The table below [not included in translated materials] lists the main technological data for the D-18T and the. D-36 engines. The D-18T is used in the An-124 long distance transport plane. This plane was displayed for the first, time. at the Paris Air Fair in This 3MA'. at the time the largest transportpla"1, 4W in the world (surpassed now by the '. Fig. tl 6 Soviet An-225). Best Available Copy

4 FTD.,ID (RS) T HUMAN TRANSLATION FTD-ID(RS)T June 1990 MICROFICHE NR: FrD-90-C THE THIRD GENERATION OF SOVIET CIVILIAN-USE TURBOFAN ENGINES By: Xiao Ming English pages: 3 Source: Guoji Hangkong, Nr. 7, 1982, pp. 41 Country of origin: China Translated by: Leo Kanner Associates F D-2188 Requester: FTD/TTTAV/Fred J. Eisert Approved for public release; Distribution unlimited. THIS TRANSLATION IS A RENDITION OF THE ORIGI- NAL FOREIGN TEXT WITHOUT ANY ANALYTICX. OR EDITORIAL COMMENT. STATEMENTS OR THEORIES ADVOCATED OR IMPLIED ARE THOSE OF THE SOURCE AND DO NOT NECESSARILY REFLECT THE POSITION OR OPINION OF THE FOREIGN TECHNOLOGY DIVISION. PREPARED BY: TRANSLATION DIVISION FOREIGN TECHNOLOGY DNISION WPAFS. OHIO. FTD- ID(RS)T Date 19 June 1990

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6 THlE THIRD GEHERATION OF SOVIET CIVILIAN-USE TURBOFAN ZKOINES At the beginning of the 1960's, the Soviet 0 1, began, oveai turbofan engines for civilian use. ov thteee generations 6 * The first generation (9017) D-20P (used on Tu-124)),S D-30 (used on Tu-134), o IIK-0^-2U (used on Tu-154), The s econd generation ( )t- D-30KU (used in Il-62M and Tu-15411) o" NK-86 (used in Il-86), The third generation ( ) D-36 (used in Yake-42), D-18T (used in An-124), D-90A (used in Tu-204 and )# All third generation turbofans are high bypass ratio turbofans, and are representative of the current technological level of Soviet civilian turbofan engines. ; / -t. The D-18T and the D-36. Developsent ox ~e SW~bgn t041d8 6 the seventies by the Luotalietu Engine; Djig ta ec tested in 1981, and a test flight was naej w~h an4 P41 N, itc production began. This is the Soviet 00' ratio turbofaid eagine. The de" Oi"aiA- d al a ' should have a low fuel consuaptionratel""m performance. To meet these objectivem, the D-1ST u8"tbree rotor structure Best Ava~j1able COPY '

7 ,,:,, a dusi ;j i, whllch the CoLe and the ouljl cover of the fan are separatt,:' c:xhauil ar. In -tdet to reduce technological risks and to demonstrate '.1 1)y1 :.ijy Ii.l,ility,, thu whole deuign and all components, the Desigis Buru.iu Aiist,uvL.Iuped a version of the D-18T that was smaller in scale, th, t) - 3 C.. The wain conpunents of the D-18T, ate: 1) A siiile-level fan (see Fig. 1) with 33 broad chord titanium alloy vartsu; at a location of 2/3 of their h, ijilt, thei is an protruding antivibration platform. tan is 2,330 mut, The diameter of the and the wheel hub ratio i; ThL rotor rotational speed is 3,300 rpm. 2) A seven-level low pressure compressor with adjustable intake nozzlu guide vanes. The inlet uiametcr is 900 wni, and the length is 66 11,. The rotor rotatior rate is 5,750 Fig. 1. D-IST fan. rpm. 3) A seven-level high pressure compressor (see Fig. 2). The vanes of the forward rank; are manufactured from titanium alloy, and those of the rear ranks are made of steel. rate of the rotor is 9,000 rpm. The rotational 4) A circular combustion chamber with 16 atomization nozzles. 5) A one-level '- high pressure turbine usizg directio crystal cooled blades. 6) A four-level low pressure turbine transmission fan.,- On the outer rinq of the turbine there tl,-,z is a 0.5 to 0.8 mm thick plasma metal-;: sprayed layer to guarantee the meal of rotol vanes and the motor box. On the 7 Mre compressor. Best Available Copy ^4