Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 6439

d) maximum Smoke Number. 2.4.3.2 The characteristic Smoke Number and gaseous pollutant emission levels shall be provided for each engine type for which emissions certification is sought. Note.— The characteristic level of the Smoke Number or gaseous pollutant emissions is the mean of the values of all the engines tested, measured and corrected to the reference standard engine and reference ambient conditions, divided by the coefficient corresponding to the number of engines tested, as shown in Appendix 6. 2007/70/II. szám ANNEX 16 — VOLUME II 11/11/93 CHAPTER 3. TURBO-JET AND TURBOFAN ENGINES INTENDED FOR PROPULSION AT SUPERSONIC SPEEDS 3.1 General 3.1.1 Applicability The provisions of this chapter shall apply to all turbo-jet and turbofan engines intended for propulsion at supersonic speeds whose date of manufacture is on or after 18 February 1982. 3.1.2 Emissions involved The following emissions shall be controlled for certification of aircraft engines: Smoke Gaseous emissions Unburned hydrocarbons (HC); Carbon monoxide (CO); and Oxides of nitrogen (NOx). 3.1.3 Units of measurement 3.1.3.1 The smoke emission shall be measured and reported in terms of Smoke Number (SN). 3.1.3.2 The mass (Dp) of the gaseous pollutants HC, CO, or NOx emitted during the reference emissions landing and take-off (LTO) cycle, defined in 3.1.5.2 and 3.1.5.3 shall be measured and reported in grams. 3.1.4 Nomenclature Throughout this chapter, where the expression F*oo is used, it shall be replaced by Foo for engines which do not employ afterburning. For taxi/ground idle thrust setting, Foo shall be used in all cases. 3.1.5 Reference conditions 3.1.5.1 Atmospheric conditions The reference atmospheric conditions shall be ISA at sea level except that the reference absolute humidity shall be 0.00634 kg water/kg dry air. 3.1.5.2 Thrust settings The engine shall be tested at sufficient power settings to define the gaseous and smoke emissions of the engine so that mass emission rates and Smoke Numbers corrected to the reference ambient conditions can be determined at the following specific percentages of rated output as agreed by the certificating authority. 3.1.5.3 Reference emissions landing and 3.1.5.3 take-off (LTO) cycle) The reference emissions LTO cycle for the calculation and reporting of gaseous emissions shall be represented by the following time in each operating mode. 3.1.5.4 Fuel specifications The fuel used during tests shall meet the specifications of Appendix 4. Additives used for the purpose of smoke suppression (such as organo-metallic compounds) shall not be present. 3.1.6 Test conditions 3.1.6.1 The tests shall be made with the engine on its test bed. Operating mode Thrust setting Take-off 100 per cent F*oo Climb 65 per cent F*oo Descent 15 per cent F*oo Approach 34 per cent F*oo Taxi/ground idle 5.8 per cent Foo Phase Time in operating mode, minutes Take-off 1.2 Climb 2.0 Descent 1.2 Approach 2.3 Taxi/ground idle 26.0 24/11/05 No. 5 2007/70/II. szám Annex 16 — Environmental Protection Volume II 11/11/93 3.1.6.2 The engine shall be representative of the certificated configuration (see Appendix 6); off-take bleeds and accessory loads other than those necessary for the engine’s basic operation shall not be simulated. 3.1.6.3 Measurements made for determination of emission levels at the thrusts specified in 3.1.5.2 shall be made with the afterburner operating at the level normally used, as applicable. 3.1.7 When test conditions differ from the reference conditions in 3.1.5, the test results shall be corrected to the reference conditions by the methods given in Appendix 5. 3.2 Smoke 3.2.1 Regulatory Smoke Number The Smoke Number at any thrust setting when measured and computed in accordance with the procedures of Appendix 2 and converted to a characteristic level by the procedures of Appendix 6 shall not exceed the regulatory level determined from the following formula: Regulatory Smoke Number = 83.6 (F*oo)–0.274 or a value of 50, whichever is lower Note.— Certificating authorities may alternatively accept values determined using afterburning provided that the validity of these data is adequately demonstrated. 3.3 Gaseous emissions 3.3.1 Regulatory levels Gaseous emission levels when measured and computed in accordance with the procedures of Appendix 3 or Appendix 5, as applicable, and converted to characteristic levels by the procedures of Appendix 6 shall not exceed the regulatory levels determined from the following formulas: Hydrocarbons (HC): Dp /F*oo = 140(0.92)Soo Carbon monoxide (CO): Dp /F*oo = 4 550(Soo)–1.03 Oxides of nitrogen (NOx): Dp /F*oo = 36 + 2.42Soo Note.— The characteristic level of the Smoke Number or gaseous pollutant emissions is the mean of the values of all the engines tested, measured and corrected to the reference standard engine and reference ambient conditions, divided by the coefficient corresponding to the number of engines tested, as shown in Appendix 6. 3.4 Information required Note.— The information required is divided into three groups: 1) general information to identify the engine characteristics, the fuel used and the method of data analysis; 2) the data obtained from the engine test(s); and 3) the results derived from the test data. 3.4.1 The following information shall be provided for each engine type for which emissions certification is sought:

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