I can’t seem to figure out how to find assigned speeds programmed into the FMS, therefore I don’t know what speed to fly at. I also don’t know how to set a cruising altitude. I have gone through tutorials but can’t seem to find the correct way. How do I find it?
CRJ-900 FMS Question
-
Unfortunately the FMS is not as developed as in real life and is very rudimentary.
As far as I know you can only edit the flightplan with the planning tool of Aerofly. It is not possible to enter new waypoints, speed or speed limits.
You can set the altitude by using the autopilot.
The CRJ-900 didn't have an autothrottle, so you have to control the thrust yourself during the hole flight.
-
Unfortunately the FMS is not as developed as in real life and is very rudimentary.
As far as I know you can only edit the flightplan with the planning tool of Aerofly. It is not possible to enter new waypoints, speed or speed limits.
You can set the altitude by using the autopilot.
The CRJ-900 didn't have an autothrottle, so you have to control the thrust yourself during the hole flight.
Do you find the the thrust lever system on the CRJ-900 sort of make it easier due to the detents it has?
-
Do you find the the thrust lever system on the CRJ-900 sort of make it easier due to the detents it has?
Not really. Because you can't set the fuel, payload, and thrust limits like a flex temperature, the MCT thrust is way too high and the CRJ-900 would climb like a rocket.
I set the trust to a lower value like 88-90% for takeoff. After takeoff I reduce the thrust to 82-86% so that the climb rate is not too high.Once you climb to a higher altitude, the thrust will automatically increase. I set the thrust so that the climb rate is about 2500 to 3500 feet, depending on the altitude.
-
- Official Post
Again... If the real world plane would be that light on takeoff it would also be a rocket. The thrust is realistic and accurate according to the engine type certificate.
The FMS of the CRJ is currently a placeholder. I think this is one of the first times I have actually read a thread in the forums about this and the plane has been out for years. Unfortunately I currently don't have time to add a more realistic CDU for the CRJ, cause I'm kind of busy with the A350
-
Again... If the real world plane would be that light on takeoff it would also be a rocket. The thrust is realistic and accurate according to the engine type certificate.
I understand why the airplane climbs so fast, and I'm not saying it's unrealistic or inaccurate. I'm fine with it.
However, setting the throttle to MCT and climbing with 4500-5000 feet per minute makes the flight (especially immediately after take-off) very hectic. So to avoid this stress it is possible to reduce the trhust by yourself.
The same procedure is described in the Learjet Tutorial. Take off = N1 86% and climb = N1 83%. It should be the MCT thrust, but it is not. If you set MCT, then the thrust will be about 10%-12% higher.
In realworld a thrust of 96-98% would be only used in bad weather conditions and/or with full payload and fuel.
-
Again... If the real world plane would be that light on takeoff it would also be a rocket. The thrust is realistic and accurate according to the engine type certificate.
But is there a way the devs could change the aircraft weight to a more realistic one? It hapenns the same with the a380 for example. I am not pretending to each player being able to change the load. Only to have the default weight much heavier. Thanks
-
But is there a way the devs could change the aircraft weight to a more realistic one? It hapenns the same with the a380 for example. I am not pretending to each player being able to change the load. Only to have the default weight much heavier. Thanks
No, it's not possible. The aircrafts are already in the near of MLW (maximum landing weight).
So if the developer would make the aircraft heavier, than the landing weights and speeds would be unrealistic, because there is no fuel consumption.
-
- Official Post
Please use CLB thrust in all Airbus aircraft and not MCT for the climb. MCT would only be used if one engine fails.
-
Please use CLB thrust in all Airbus aircraft and not MCT for the climb. MCT would only be used if one engine fails.
Sure, we all use the CL notch for climb on the Airbus. But in the Airbus MCDU you can set the flex temp to a higher value so the climb rate isn't so high. When I load the airplane, the flex temp is already set to a real life value of about 48-56°.
The problem with the CRJ is that we also have the CL notch for climb thrust, but not the ability to set a thrust limit.
So the airplane climbs at 4500 to 5000 feet per minute. The marker on the PFD only goes up to 4000 feet. If the climb rate is higher, the color of this marker changes from green to yellow. Not a good sign to me. To avoid this, I reduce the thrust in the CRJ and Learjet manually and it works great. -
Please use CLB thrust in all Airbus aircraft and not MCT for the climb. MCT would only be used if one engine fails.
Why is the climbing thrust of the 777 so high?
-
- Official Post
Sure, we all use the CL notch for climb on the Airbus. But in the Airbus MCDU you can set the flex temp to a higher value so the climb rate isn't so high. When I load the airplane, the flex temp is already set to a real life value of about 48-56°.
The problem with the CRJ is that we also have the CL notch for climb thrust, but not the ability to set a thrust limit.
So the airplane climbs at 4500 to 5000 feet per minute. The marker on the PFD only goes up to 4000 feet. If the climb rate is higher, the color of this marker changes from green to yellow. Not a good sign to me. To avoid this, I reduce the thrust in the CRJ and Learjet manually and it works great.The flexible takeoff temperature does not affect climb thrust. It only affects the TAKEOFF thrust when you decide to takeoff with the thrust lever in the MCT/FLX detent. After about 1000ft above ground (thrust reduction altitude) you pull the levers back to CLB and at that point it doesn't matter what the FLEX TEMP was, because once you move the lever to CLB or TOGA in the air that temperature value is deleted and the FADEC uses the normal CLB, MCT or TOGA thrust ratings.
-
- Official Post
Why is the climbing thrust of the 777 so high?
We use the published thrust rating values. They are probably defined that high by Boeing because a 777-300ER with maximum takeoff thrust needs to be able to climb with just one engine. With two engines running and with the aircraft at max landing weight and now at max takeoff weight the excess thrust is quite high of course.
-
I can’t seem to figure out how to find assigned speeds programmed into the FMS, therefore I don’t know what speed to fly at. I also don’t know how to set a cruising altitude. I have gone through tutorials but can’t seem to find the correct way. How do I find it?
The CRJ FMS is very limited because many sections are missing. Currently, it is only possible to enter the route and nothing else. There is not even a performance page in this FMS. I do not understand why they made such a limited FMS for this aircraft. Given the time these limitations have existed, I do not believe there will be any improvements in the short or medium term.
-
The CRJ FMS is very limited because many sections are missing. Currently, it is only possible to enter the route and nothing else. There is not even a performance page in this FMS. I do not understand why they made such a limited FMS for this aircraft. Given the time these limitations have existed, I do not believe there will be any improvements in the short or medium term.
💯
-
We use the published thrust rating values. They are probably defined that high by Boeing because a 777-300ER with maximum takeoff thrust needs to be able to climb with just one engine. With two engines running and with the aircraft at max landing weight and now at max takeoff weight the excess thrust is quite high of course.
Where did you find the data? You should check it again.
<[float64][N1RatingMaximumClimb] [1.012]>
<[float64][N1RatingDeratedClimb1] [0.953]>
<[float64][N1RatingDeratedClimb2] [0.862]>
<[float64][N1RatingMaximumContinuous] [1.012]>
Maybe it should be like this?
<[float64][N1RatingMaximumClimb] [0.893]>
