Melbourne Airport Rail Link

 
  CPH8 Locomotive Driver

Tullamarine's location was determined by the Essendon runway directions. The decision was mainly about avoiding airspace conflicts rather than ground space.

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  Djebel Station Master

Tullamarine's location was determined by the Essendon runway directions. The decision was mainly about avoiding airspace conflicts rather than ground space.
"CPH8"

Interesting.  Could you please elaborate on that for those of us who are ignorant of air traffic control planning (at least not beyond, "Make sure planes don't crash into each other!").
  John.Z Assistant Commissioner

Tullamarine's location was determined by the Essendon runway directions. The decision was mainly about avoiding airspace conflicts rather than ground space.

Interesting.  Could you please elaborate on that for those of us who are ignorant of air traffic control planning (at least not beyond, "Make sure planes don't crash into each other!").
Djebel
The flight paths for Essendon airport would have been kept the same, so for the new airport (let's assume they were choosing between Tulla and Calder Park only) it needed to allow for the runway config you see at Tulla today to allow for most efficient use using known wind data, and when those planes were using those runways, not disrupt the planes using essendon.
  3088D Station Staff

So why did the Federal government choose to build the airport at Tullamarine?
historian

I stumbled across a 1963 Federal Parliamentary report into the Airport in which was summarised the selection of the site.

Tullamarine was chosen as the best site for several reasons - after the possibility of extensions to Essendon Airport was quickly discounted. Several sites were mooted: Tulla, Wittlesea, Hastings, Port Melbourne (!), Werribee,  Laverton, Avalon, and Moorabbin. When they considered flight paths, proximity to Melbourne and lower development costs the choice narowed to Tullamarine or Laverton. Laverton had many disadvantages - it was and still is further from Melbourne, was near to an explosives depot too costly to move, and was already in use for military purposes. Traffic (air?) patterns were also considered and again Tulla was the better choice, being able to be co-ordinated with that of the existing airport at Essendon. The committee considered Laverton’s traffic patterns to be “in conflict” with the pattern for Essendon.

The site chosen was generally rural (and therefore cheap) and had a gently sloping plateau and an excellent site for aviation purposes. It also held better prospects for future extension and less chance for urban encroachment.
  Jordy33 Station Master

Would the Airport station be elevated or Underground? Elevated is probably easier but might increase walking travel times to terminals, with Underground you can get it smack bang under the terminals but it would be VERY complex compared to elevated.

In my opinion the tracks should go under the Ring Road then ascend to a Skyrail parallel to Airport Drive into an Elevated station which includes bridges with travelators. It wouldn’t be super complex plus engineers and construction companies would have had experience with building elevated rail.
  railblogger Chief Commissioner

Location: At the back of the train, quitely doing exactly what you'd expect.
Would the Airport station be elevated or Underground? Elevated is probably easier but might increase walking travel times to terminals, with Underground you can get it smack bang under the terminals but it would be VERY complex compared to elevated.

In my opinion the tracks should go under the Ring Road then ascend to a Skyrail parallel to Airport Drive into an Elevated station which includes bridges with travelators. It wouldn’t be super complex plus engineers and construction companies would have had experience with building elevated rail.
Jordy33
Disagree. Skyrail to approx. the long-term carpark then underground to permit extension towards Sunbury.
  Djebel Station Master

Will there be any provision for a station at T4?  Or any possible future terminals?  Or will passengers just have to take Shank's Pony from wherever they decide to put the station?
  John.Z Assistant Commissioner

Will there be any provision for a station at T4?  Or any possible future terminals?  Or will passengers just have to take Shank's Pony from wherever they decide to put the station?
Djebel
It'll be put in that forecourt area between the hotel and T2 I'd assume, that whole area is getting a canopy as part of the redevelopment to open up the landside area of the terminals. Perfect spot to put some escelators down to an underground station from each terminal linking to it being centrally located outside T2.
  ngarner Assistant Commissioner

Location: Seville
IIRC there have been a number of comments about an underground station at the airport, from reputable sources

Neil
  Adogs Chief Train Controller

Station at airport will almost certainly be underground.

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