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vliegtuigje123
Topic Author
Posts: 1
Joined: Tue Oct 15, 2019 2:04 pm

Goodafternoon,

For a project I am doing I have some technical questions that do not understand. I hope that there is somebody who can help me out with the following questions!

1) If you have to fly 4000nm, and assume the aircraft (A139neo) is in a two class layout and an average passenger plus baggage weighs 100 kg (220lbs) and the weather is close to 0ft altitude ISA conditions.
How many passenger can an A319NEO without an Aircraft Centre Tank (ACT) carry 4000nm?

2) How can you determine the amount of passengers that an A319NEO can carry with an ACT (additional centre tank)?

3) How can you determine the amount of passengers that an A319NEO can carry with 2 ACT's?

I have attached the payload range chart for an airbus A319neo aircraft. I drew the blue line which suggests that the payload is 8000 kg for an A319neo WITHOUT an ACT. But that seems a little low because 8000 kg payload is around 80 people. The A319neo (what i found on the web) should be able to carry 120-150 people.

I hope someone can help me out with my problem!

Greetings from the Netherlands.

greg85
Posts: 190
Joined: Tue Jun 26, 2007 9:45 am

This is not possible. A full A319 with no ACTs will handle half that distance. The A32x reaches its limits between 5 and 6 hours flight time without ACTs. There are so many weight variants and engine options, but 4000 nmi is very far beyond the norm for the A319 in regular airline service.

tommy1808
Posts: 13958
Joined: Thu Nov 21, 2013 3:24 pm

vliegtuigje123 wrote:
How many passenger can an A319NEO without an Aircraft Centre Tank (ACT) carry 4000nm?

About 60. Of course that doesn't include allowance for head winds and such. Real world airline operation probably just a ferry flight.

2) How can you determine the amount of passengers that an A319NEO can carry with an ACT (additional centre tank)?

To get an idea by looking at the AIRBUS ACAP. Maybe about 100~110, but that is darn close to the fuel volume limit.

3) How can you determine the amount of passengers that an A319NEO can carry with 2 ACT's?

1 ACT gives you fuel for ~400nm or a bit more. But you run into the MTOW long before you have a full cabin.

Best regards
Thomas
Well, there is prophecy in the bible after all: 2 Timothy 3:1-6

WildcatYXU
Posts: 3204
Joined: Sat May 06, 2006 2:05 pm

greg85 wrote:
This is not possible. A full A319 with no ACTs will handle half that distance. The A32x reaches its limits between 5 and 6 hours flight time without ACTs. There are so many weight variants and engine options, but 4000 nmi is very far beyond the norm for the A319 in regular airline service.

Hmm, so you have data for the A319-151 and A319-171? Because that's what the OP is asking about.
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greg85
Posts: 190
Joined: Tue Jun 26, 2007 9:45 am

WildcatYXU wrote:
greg85 wrote:
This is not possible. A full A319 with no ACTs will handle half that distance. The A32x reaches its limits between 5 and 6 hours flight time without ACTs. There are so many weight variants and engine options, but 4000 nmi is very far beyond the norm for the A319 in regular airline service.

Hmm, so you have data for the A319-151 and A319-171? Because that's what the OP is asking about.

No. I fly the A319-111, 320-214 and 320-251. But we already know that the difference is about 14-15 % SFC. With no ACT, the real life range of a well loaded NEO with the highest MTOW is still going to be over 1000 nmi short of the 4000 suggested. As someone above suggested, adding ACTs will reduce possible payload significantly. As always, the practical range is far lower than the max theoretical range that Airbus (or other) is advertising.

WildcatYXU
Posts: 3204
Joined: Sat May 06, 2006 2:05 pm

Thanks Greg85. How much range would the A319 gain from one ACT?
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trijetsonly
Posts: 736
Joined: Tue Jul 21, 2009 10:38 pm

WildcatYXU wrote:
Thanks Greg85. How much range would the A319 gain from one ACT?

The first and second each hold 3.100 liters of fuel, which is approximately 2,5t, which is pretty much what an A319ceo needs per hour on average for a maximum range flight.
So for an A319neo you could say that each ACT provides another 75min endurance, given the takeoff was at MTOW with full tanks.
Happy Landings

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