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Author Topic: Longer-range plane more restricted than shorter-range model on some routes  (Read 461 times)

Offline Cardinal

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The still-air range of the F.27-600 is 40nm less than the -200 model. (970nm vs 1010nm)
Yet on many (but not all) routes where the wind reduces the capacity in one direction, the -600 can carry more passengers than the -200?

Attached example is DEN-AZO, which is just one of many such routes. ESAD on the AZO-DEN segment is listed as 1111nm. (ground distance is 886nm) In this example, the -200 is limited to 38 pax while the lower-range -600 is limited to 42 pax.

It's not a runway issue, the runways are plenty long enough for an F.27 at MTOW.

« Last Edit: November 25, 2019, 05:41:35 PM by Cardinal »

Offline Cardinal

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Re: Longer-range plane more restricted than shorter-range model
« Reply #1 on: November 25, 2019, 05:39:39 PM »
And to show an example where the -200 is less restricted than the -600, here is a screenshot from DEN-YEG. In this case, the -600 carries 1 less passenger, as you would expect with an ESAD of 1032 on the outbound.

Offline arefixz

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Re: Longer-range plane more restricted than shorter-range model on some routes
« Reply #2 on: November 25, 2019, 07:18:03 PM »
Its more clearly on the Range vs Payload graph. We all knows Sami making the aircraft data technically as realistic as possible.
https://www.airwaysim.com/game/Aircraft/Payload/6/96/93/
https://www.airwaysim.com/game/Aircraft/Payload/8/98/596/

Further explanation is based on aircraft MZFW(Max zero fuel weight) a.k.a Payload, MTOW (Max takeoff weight) and fuel consumption per hour.
F27-600 consumes lesser fuel per hour. If both have same fuel capacity then F27-600 can fly further and longer.
F27-600 also have lower payload, which contributes to lower fuel consumption than -200.
Stats of max seat and max cargo capacity doesn't indicate that its the max capacity for maximum payload.

Payload (F27-200  6157kg) (F27-600  5687kg). Seat and cargo capacity same 48Y 135kg cargo (both are volume restricted)

We can conclude that even if 48 seats and 135kg cargo filled, F27-200 flies with 500kg lesser than its max payload.
It's about extra capacity that is not utilized and its costs in efficiency.

Offline Cardinal

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Re: Longer-range plane more restricted than shorter-range model on some routes
« Reply #3 on: November 25, 2019, 08:24:41 PM »
If the -600 is more efficient with the same fuel capacity, why does it have a lower advertised range than the -200?

And why is the difference between them so inconsistent? Some routes the -200 has no restriction where the -600 is restricted, and some routes the -200 is restricted but the -600 is not.

Offline MikeS

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Re: Longer-range plane more restricted than shorter-range model on some routes
« Reply #4 on: November 26, 2019, 12:03:51 AM »
not meaning to hijack the thread, but I have a similar issue with the YAK-40s.
Yakovlev offers the standard version and then another one labeled "increased payload" with a slightly longer range.
Turns out that on my test route: The "increased payload" version flies 2 pax less (only 9 total) on the outbound route than
the normal version (11). On the inbound sector, however, the "increased payload" version does transport more (19 vs 18) pax.
I know the variation is minimal but it's a small aircraft and every sold seat counts.
see attached image (inset is for "increased payload" version

Mike

 

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