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basic operation shall not be simulated.
2.1.6 When test conditions differ from the reference
conditions in 2.1.4 the test results shall be corrected to the
reference conditions by the methods given in Appendix 3.
2.2 Smoke
2.2.1 Applicability
The provisions of 2.2.2 shall apply to engines whose date of
manufacture is on or after 1 January 1983.
2.2.2 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 level determined from the
following formula:
Regulatory Smoke Number = 83.6 ( F ~ ~ ) ~ . ~ ~ ~
or a value of 50,
whichever is lower
2.3 Gaseous emissions
2.3.1 Applicability
The provisions of 2.3.2 shall apply to engines whose rated
output is greater than 26.7 kN and whose date of manufacture
is on or after 1 January 1986 and as further specified for
oxides of nitrogen.
2.3.2 Regulatory levels
Gaseous emission levels when measured and computed in
accordance with the procedures of Appendix 3 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, = 19.6
Carbon monoxide (CO): Dp /F,, = 11 8
Oxides of nitrogen (NO,):
a) for engines of a type or model for which the date of
manufacture of the first individual production model
was on or before 31 December 1995 and for which the
date of manufacture of the individual engine was on or
before 31 December 1999.
b) for engines of a type or model for which the date of
manufacture of the first individual production model
was after 31 December 1995 or for which the date of
manufacture of the individual engine was after
3 1 December 1999.
c) for engines of a type or model for which the date of
manufacture of the first individual production model
was after 31 December 2003:
1) for engines with a pressure ratio of 30 or less:
i) for engines with a maximum rated thrust of more
than 89.0 kN:
ii) for engines with a maximum rated thrust of more
than 26.7 kN but not more than 89.0 Id\T:
2) for engines with a pressure ratio of more than 30 but
less than 62.5:
i) for engines with a maximum rated thrust of more
than 89.0 kN:
Dp IF, = 7 + 2 . 0 1 ~ ~
ii) for engines with a maximum rated thrust of more
than 26.7 kN but not more than 89.0 1<N:
Dp IFoo = 42.71 + 1 . 4 2 8 6 ~- ~0.4 013FoO+
0.00642~, x Foo
3) for engines with a pressure ratio of 62.5 or more:
Dp IFoo = 32 + 1 . 6 7 ~ ~
2411 1105
No. 5
Annex I6 - Environmental Protection Volume 11
d) for engines of a type or model for which the date of
manufacture of the first individual production model
was after 31 December 2007:
b) rated output (in kilonewtons);
c) reference pressure ratio;
1) for engines with a pressure ratio of 30 or less: d) fuel specification reference;
i) for engines with a maximum rated thrust of more
than 89.0 kN:
e) fuel hydrogen/carbon ratio;
f) the methods of data acquisition;
g) the method of making corrections for ambiint conditions;
ii) for engines with a maximum rated thrust of more and
than 26.7 kN but not more than 89.0 IrN.
h) the method of data analysis. Dp IF, = 38.5486 + (1.6823 * x,,J - (0.2453 *
F,) - (0.00308 * a, * FA
2) for engines with a pressure ratio of more than 30 but 2.4.2 Test information
less than 82.6:
The following information shall be provided for each engine
tested for certification purposes at each of the thrust settings
specified in 2.1.4.2. The information shall be provided after
correction to the reference ambient conditions where applicable:
i) for engines with a maximum rated thrust of more
than 89.0 IcN:
Dp IF, = -1.04 + (2.0 * a,)
a) fuel flow (kilograms/second);
ii) for engines with a maximum rated thrust of more
than 26.7 kN but not more than 89.0 W: b) emission index (grams/kilogram) for each gaseous
pollutant; and
Dp IF, = 46.1600 + (1.4286 * x,,J - (0.5303 *
F,) + (0.00642 * n, * F,) c) measured Smoke Number.
3) for engines with a pressure ratio of 82.6 or more:
2.4.3 Derived information
Dp IF, )=, , 3,2, a+ (1.6 *
2.4.3.1 The following derived information shall be
Note.- The characteristic level of the Smoke Number or provided for each engine tested for certification purposes:
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
　
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