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-2W3197
No. 3
Annex I 6 - Environmental Protection Volume ZZ
ATTACHMENT E TO APPENDIX 5. THE CALCULATION OF THE EMISSIONS
PARAMETERS - BASIS, MEASUREMENT CORRECTIONS AND
ALTERNATIVE NUMERICAL METHOD
1. SYMBOLS number of moles of NO in the exhaust sample
per mole of fuel
airlfuel ratio; the ratio of the mass flow rate of
dry air to that of the fuel
AER
emission index; lo3 x mass flow rate of gaseous
emission product in exhaust per unit mass flow
rate of fuel
concentration of O2 in dry air, by volume =
0.2095 normally
concenbation of N, + rare gases in dry air, by
ratio of concentration measured wet to that volume = 0.7902 normally
measured dry (after cold trap)
concentration of CO, in dry air, by volume =
analyser interference coefficient for interference 0.0003 normally
by CO2 number of moles of air per mole of fuel in initial
airlfuel mixture
analyser interference coefficient for interference
by Hz0 symbol used and defined in 3.4
molecular inass of dry air = 28.966 g or, where
appropriate, = (32 R + 28.156 4 S + 44.011 T) g
mean concentration of C02 in exhaust sample,
vollvol
molecular mass of CO = 28.011 g mean concentration of CO in exhaust sample,
vollvol
molecular mass of exhaust hydrocarbon, taken as
CH, = 16.043 g mean concentration of HC in exhaust sample,
vollvol
molecular mass of NO, = 46.008 g
mean concentration of NO in exhaust sample,
atomic mass of carbon = 12.011 g v0Uvol
mean concentration of NO, in exhaust sample,
vollvol
atomic mass of hydrogen = 1.008 g
number of moles of CO, in the exhaust sample
per mole of fuel mean concentration of NO and NO, in exhaust
sample, vollvol
number of moles of N, in the exhaust sample per
mole of fuel mean concentration of NO in exhaust sample,
after passing through the NO,/NO converter,
number of moles of O2 in the exhaust sample per voYvol
mole of fuel
mean = ([NO~I,-[NOI)
rl number of moles of H,O in the exhaust sample
per mole of fuel mean concentration in exhaust sample after cold
trap, vollvol
number of moles of CO in the exhaust sample
per mole of fuel mean concenmation measurement indicated before
instrument correction applied, vollvol
number of moles of CJ$ in the exhaust sample
per mole of fuel humidity of ambient air, vol waterlvol dry air
number of moles of NO, in the exhaust sample
per mole of fuel
humidity of exhaust sample leaving "drier" or
"cold trap", vol waterlvol dry sample
COVER SHEET TO AMENDMENT 4
INTERNATIONAL STANDARDS
AND RECOMMENDED PRACTICES
ENVIRONMENTAL
PROTECTION
ANNEX 16
TO THE CONVENTION ON INTERNATIONAL CIVIL AVIATION
VOLUME 11
AIRCRAFT ENGINE EMISSIONS
SECOND EDITION - JULY 1993
INTERNATIONAL CIVIL AVIATION ORGANIZATION
Checklist of Amendments to Annex 16, Volume I1
Date of
Effective date applicability
Second Edition 26 July 1993 11 November 1993
Amendment 3
(adopted by the Council on 20 March 1997) 20 March 1997 -
Amendment 4
(adopted by the Council on 26 February 1999)
Replacements pages (viii), 1,7 and 8 19 July 1999 4 November 1999
Transmittal note
Amendment 4
to the
International Standards and
Recommended Practices
ENVIRONMENTAL PROTECTION
(Annex 16, Volume Il to the Convention on International Civil Aviation)
1. Insert the following replacement pages in Annex 16, Volume I1 (Second Edition) to incorporate
Amendment 4 which becomes applicable on 4 November 1999:
a) Page (viii) - Foreword
b) Page 1 - Part I, Chapter 1
c) Pages 7 and 8 - Part 111, Chapter 2
2. Record the entry of this amendment on page (ii).
Foreword
Table A. Amendments to Annex 16
Annex 16 - Environmental Protection
Amendment Sourcefs) Subiect(s)
1st Edition Special Meeting on
Aircraft Noise in the
Vicinity of Aerodromes
(1969)
%st Meeting of the Noise certification of future production and derived versions of
Committee on Aircraft subsonic jet aeroplanes and updating of terminology used to describe
Noise aircraft weight.
2 Third Meeting of the Noise certification of light propeller-driven aeroplanes and subsonic jet
Committee on Aircraft aeroplanes of 5 700 kg and less maximum certificated take-off weight
Noise and guidance on discharge of functions by States in the cases of lease,
charter and interchange of aircraft.
3 Fourth Meeting of the Noise certification standards for future subsonic jet aeroplanes and
(2nd Edition) Committee on Aircraft propeller-driven aeroplanes, other than STOL aeroplanes, and guide-
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