BARVENNON.COM
revised May 2002
AIR TRANSPORT, SYDNEY.
Aircraft are the latest and greatest symbol of the
machine
age. On
page 37 of the Transportation (October 1997) issue of "SCIENTIFIC
AMERICAN"
is a graph
of projected per capita traffic volume. The graph is
part
of an article by A.Schafer & D. Victor on "Global Mobility" and
forecasts
that high speed transport will account for 41% of passenger miles in
2050,
25% in 2020, up from 3% in 1960 & 9% in 1990. High speed
transport
is aircraft or very fast train.
In Sydney Australia there are complaints about
aircraft
noise. Sydney airport is about five kilometers South of the city
center, and aircraft movements are inevitably over densely populated
areas.
The federal government (which controls airports) has been rescheduling
flight corridors in a vain attempt to reduce complaints. The
rapidly
growing "No Airports" movement fails to see the necessity of airports
in
the Sydney Basin. The inhabitants of Badgery's Creek in Western
Sydney
(where the government proposed to open a second airport) do not want an
airport either. Some of the people at the mining town of Lithgow
(about 100 kilometers west of Sydney, pop. about 30,000) have indicated
that they would welcome the noise & business that an airport would
bring.
The intent of the Federal government to privatize
Sydney
airport is cause for alarm, insofar as privatization will make it that
much harder and more expensive to relocate as that becomes necessary.
Below are catalogued the disadvantages of airports
in
cities, and reasons for concentrating airports in remote locations.
- Airplane (travel)
spreads
disease. The first defense
against the expected pandemics of the third millennium should be
restrictions
on rapid international travel. Placing international airports in
remote areas would simplify any human quarantine procedures found
necessary.
Animal quarantine procedures could also be simplified.
- Aircraft are beginning to regularly fly into
the
ground near
airports. The probability of a serious incident can only increase
as time passes. It does not seem like a good idea to have densely
populated
areas near airports.
- The events of September 11th have added a new
dimension to
the problem presented by airports. Now the only method of
preventing
dedicated terrorists from causing a fully fueled airplane to crash into
a densely populated city is to not allow such aircraft near cities, by
relocating all airports away from cities and placing a total ban all
flying
vehicles within 10 kilometers of any dense urban area.
There
were only five terrorists per aircraft on September 11th. Given
twenty
unarmed combat specialists aboard a flight departing Kingsford-Smith
airport,
it would be impossible to prevent them from carking Parliament
House.
Alternatively, a Stinger or SAM 7 man portable air defence missile
could
be used to bring down a fully laden civil aircraft just after takeoff
into
densely populated regions of a city.
- Airports are unwelcome additions in any
city.
They
are noisy and smelly. They are an undoubted health hazard.
An Australian federal government that promised to move all commercial
airports
out of the Sydney basin might well earn itself an extra handful of
seats
in the Representatives & an extra seat in the Senate.
Melbourne
people might well feel the same way.
- International tourism would be only marginally
affected if
airports were relocated to remote areas. One international
airport
for South-eastern Australia near Parkes or Forbes NSW should
suffice.
Forbes is probably near the centroid for population & distance for
Sydney, Melbourne Brisbane and Adelaide, and is sparsely settled and
very
flat. Very fast (400 KPH) trains could travel across open plains
to deliver passengers within two or three hours to the major cities.
Sightseeing
tourists could start their holiday in "outback" Australia.
- Airplanes produce massive pollution and consume
enormous
amounts of energy. Below I have used various sources to show that
airplanes consume about half as much energy as is used to provide the
total
electricity budget for Australia.
FACTS ABOUT AIRPLANES.
- An RB211
engine (similar to a 747 engine) produces about 30 megawatts.(1 HP =
746
watts)
- Per capita Australian consumption of
electricity
was 8901
kWh p/a (for 1996) which is (divide by 365.25 & then divide by 24)
about 1015 watts per person averaged continuously.
- Maximum electricity generating capacity in
Australia (1994)
was 38,830,000
kW
- Sydney has a population of about 3,750,000
and Australia has about 18,500,000.(1997)
- According to the Australian
Bureau of Statistics on domestic airlines aircraft movements in
Australia
there are more than 500,000 aircraft movements and more than 450,000
hours
are flown per annum.
- There are about 80,000 international
aircraft movements each year. Since any overseas flight is 2
hours, and most are 6 hours, this counts as about 200,000* aircraft
hours
per annum in mostly big (4 engines) aircraft.
*i.e. half of 5 hrs*80,000 flights
May 2002. The following
facts
were obtained from the Australian Government document "Urban Air
Pollution
In Australia" 1997 produced under the direction of Sir Arvi
Parbo.
(ISBN 1 875618 37 6). At the date of writing, this
document
was available on the internet at http://www.ea.gov.au/atmosphere/airquality/urban-air/pubs/urban.pdf
- The most efficient aircraft (767) carries
passengers for
a fuel efficiency of 80 seat miles/gallon.(about 28 Km/Litre).(p132)
- A fully laden 747 carries 217,000 litres of
fuel.(p128)
- A 747 burns 10 l/sec during takeoff, and
averages
3.5 l/sec
over a journey.(p128)
- Sydney reported 20.3 million passengers in
95/96. It
is anticipated there will be 40.4 million in 2009/10.(p128)
- Sydney airport's percentage share of URBAN
airshed
pollution
produced was 0.6%(CO), 3.2%(NOX), 0.6%(HC) (p128)
- The "Urban Airshed" includes only the first one
minute of
flying time, and the last 5 minutes of flying time.(p128)$
$ The report stated the first 5 Km
after
takeoff, and 20KM before landing.(p128)
At 300 KM/H that is one minute after takeoff, and
5 minutes prior to landing.
The following table was prepared using only the Arvi
Parbo document. Since those data were only for pollution produced
in the "Sydney Airshed", I have calculated the total pollution produced
by aircraft movement into and from Sydney by multiplying the figure
given
on Table 12 (p 131) by twenty (as an average) to account for a half
share
of the total pollution produced by aircraft (and inflicted on the
biosphere)
by each national/international aircraft alighting in Sydney. Car
pollution was given in Kilotons per annum on Table 1 (p31) and has been
converted to tonnes/day.
Pollutant==>
|
Hydrocarbons (VOC)
|
NOX
|
CO
|
Sydney Aircraft total Pollution |
80 tonnes/day
|
120 tonnes/day
|
320 tonnes/day
|
Car Pollution in Sydney Basin. |
200 tonnes/day
|
200 tonnes/day
|
2000 tonnes/day
|
DEDUCTIONS FROM THE FACTS.
- A four engined jetliner operating continuously
could produce
120 MW which is as much power as would be used by 130,000 people.
- Thirty-two four engined airplanes operating
continuously
could produce sufficient electricity to power Sydney.
- Three-hundred-twenty-four (324) four engined
airplanes could
supply the maximum power load for Australia.
- One hundred and fifty four (154) four engined
airplanes could
produce enough energy (averaged) to power Australia.
- Australia has fifty one domestic airplanes in
the
air continuously.(divide
450,000 by the number of hours in a year = 365*24).
- Australia is responsible for twenty-two
international airplanes
being in the air continuously.(divide 200,000 by the number of hours in
a year = 365*24).
- For a journey of any distance, it costs at
least
twice as
much fuel and produces at least twice as much pollution to use an
aircraft
in preference to a car. (Assumptions: aircraft and car are
modern,
& fuel efficient, and each carries the maximum of passengers).
- The aircraft operating
out
of Sydney
airport alone produce 40% of the hydrocarbons pollution, 60% of the NOX
pollution, and 16% of the CO pollution produced by all cars in the
Sydney
basin (which has about 70% of the people in the state of NSW).
CAVEATS
- I have used the maximum power figure (30 MW) of
the
RB211.
However since flights average 54 minutes I believe that this is not too
unreasonable.
- Regional aircraft movements were not included.
- Aircraft probably produce more pollution per
output
joule
than coal fired power stations.
- Consequently the "deductions" could have
errors,
but are
I believe within an order of magnitude of the actuality. I would
appreciate it if anyone who found errors or disagrees with my
assumptions
reported them to me.
- Much of the data is from the CIA. The CIA
seems to
be moving & changing it's html pages. This makes the
task
of keeping up-to-date data & links challenging. I apologize for
damaged
links.
The conclusion?
Airplanes
produce more than a quarter of the pollution that is produced by
electricity
generation in Australia. The actual pollution is probably closer
to one half, because power stations are comparatively clean. And
unlike power station pollution, most aircraft pollution happens right
over
centers of population. Fully laden Aircraft produce more than
double
the pollution per passenger km of fully laden family cars.
Suggested solution? Use
suitable
tax breaks, and initiate a Very Fast Train project linking Melbourne,
Adelaide,
Brisbane & Sydney to an International airport in Central NSW.
Turn existing city airports into parks. Australia could probably
manage with two international airports, one about central NSW (near
Condobolin),
the other at a suitable distance from Perth. Intranational
flights
should be banned except between towns with small populations, and
emergencies.
archived
2000
version
of this page
Created October 1997
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