Wrong Fuel Consumption, especially during climb

[aviatop]

Hello! Fighting with that from v 1.0 on Plane Maker and now I want to help the developers improve the quality of their product. As you know, NAC Belavia crew actively flying Jrollon CRJ200 plane and make notes of main things to improve.

The most sufficient, as we found, is the wrong fuel consumption, especially on short-ranged flights. And we also found that this is due to a little high Fuel Consumption on horizontal stage of flight and TOO much (x1.6 - x 1.8) fuel burning during climb. I.E, as listed in Bombardier Perfomance Data, climb from ground level to FL310 on constant N1 with ISA DEV -10C will burn about 320 kgs (705 lbs) and will long 17 mins. In Jrollon model the same situation burns about 800 kgs (1765 lbs). If you are looking at Fuel Flow indication you will see the difference between real model and flightsim.

Jrollon CRJ-200 is very good model indeed and with this info we are trying to make it more better than now. Today I will try to record all data, according to Fuel Flow on different N1 and different stage of flights and if needed, I will provide it to the developers to help them with correct info about fuel consumption. (on request with screenshots, videos, etc).

Hope I helped you with this info. Maksim.

[aviatop]

Here is a table of fuel flows per engine, noted during flight on different stages (in the table, by hand, kgs/h).

In this table:| FL | Fuel Flow Per Engine | N1 |

Edited December 3, 2011 by aviatop

[davidngr]

Great job my friend!

[Japo32]

I would like to have a better engine programming in future. I pretend if philipp has time, to make a maintenance plugin for the CRJ.. and in that plugin, record the way you fly. In that area fuel consumption will be important, so any information is welcome.

Thanks.

[aviatop]

Also would like to add that is too hard to configure consumption using only 4 params in PM. But still trying to do it as accurate as possible. Will post info here if get some adequate results. Maksim.

[skipper63]

Hi,

yes, fuel consumption is too high. I fly for Leipzigair VA and we do have precise briefing information and all my CRJ200 flights, which are tracked by ACARS, show that fuel consumption is about 1,5 to 1,8 times as high, as it should be, which seconds exactly what Maksim is posting.

Also, flying the CRJ200 in x-Plane 10 Demo right now, I get the impression, that engine power is higher than in X-Plane 9. I just did a couple of ILS landings and N1 is at maximum 45% for a nice glide slope following with flaps fully extended. In X-Plane 9, I believe to be around 55-60% N1 while following the GS with flaps down. That is with default weight and fuel.

Cheers

Peter

[Kieran]

I know there is a new jet engine model in X-Plane 10, so this could be the reason for the larger amount of thrust.

[Japo32]

Yes, the engine was not touched so it has to be xplane10.

About fuel. When I put the right number, the plane did the longest real range almost twice. Did several flights and always reached the maximun range with still half deposit full. So I increased the consumption... and now the plane is doing the real range (have to try in xp10 because if with less N1 the plane have more power, then less fuel makes more miles. Have to find what is happening and inform Austin. Because maybe jet engines are better, but fuel consution is not.

[aviatop]

Updating this topic would like to add that almost configured consumption under the X-plane 9. These results are not absolutely precise, but they are "plus/minus" from the real one.

PS: trying CRJ under X-plane 10 I am absolutely disappointed. It's like a rocket.... taking off on 68% N1 and landing on 45% N1. I don't know, but it seems that there a lot of work in this way for Javier and his team (thanks to Laminar). On this stage this plane is "unflyable" in XP 10

[Japo32]

Hi!

Yes.. Austin modified the jet simulation.. and broke somethings in xplane10. I am waiting to have a stabilized xplane10 version to start working on that, because I could make things go ok, but then Laminar could modify it again.. and then break everything back again.

I recomend you for now to put inside planemaker in engine area, the critical altitude of 25,000 feet. I have to be playing with the number for sure.. but there is the clue to work with.

[aviatop]

Hi!

Yes.. Austin modified the jet simulation.. and broke somethings in xplane10. I am waiting to have a stabilized xplane10 version to start working on that, because I could make things go ok, but then Laminar could modify it again.. and then break everything back again.

I recomend you for now to put inside planemaker in engine area, the critical altitude of 25,000 feet. I have to be playing with the number for sure.. but there is the clue to work with.

Hey! Nice to hear that the development will be continued and for x-plane 10;)

[Kyle Sanders]

I would like to add to this thread with another problem that is still being tested in XP9.7... http://forums.x-pilot.com/index.php/topic/4409-calling-real-world-crj2-pilots/page-2

[Cameron]

Kyle, please don't resurrect old threads.

[Kyle Sanders]

Kyle, please don't resurrect old threads.

Cameron, I am sorry but that thread is new that I referenced and is still active.

[Cameron]

Kyle,

A topic made in January of 2012 is new to you? This topic is quite old. Over 365 days old.

Again, please do not open up old topics.

[Kyle Sanders]

Kyle,

A topic made in January of 2012 is new to you? This topic is quite old. Over 365 days old.

Again, please do not open up old topics.

I have just gone back and looked at the dates... I for some reason though that 4 JAN was 4 DEC of 2012. My apologies.