Re: JD320 Airliner ver 3.2 r1,r2 WIN/MAC 64 bit (X-Plane 11)
Do the different engines make a difference?
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JARDesign Group Board → Download, Updates → JD320 Airliner ver 3.2 r1,r2 WIN/MAC 64 bit (X-Plane 11)
Do the different engines make a difference?
Question on Speedbrakes: I have a difficult time slowing down even when using speedbrakes. When I am descending, I put the throttle on idle, put speedbrakes to full and still I am increasing speed when descending at 1500 feet per minute. I am new to airbus, is this normal or is there something I am missing on the airbus?
Thanks for any advice anyone can offer
Question on Speedbrakes: I have a difficult time slowing down even when using speedbrakes. When I am descending, I put the throttle on idle, put speedbrakes to full and still I am increasing speed when descending at 1500 feet per minute. I am new to airbus, is this normal or is there something I am missing on the airbus?
Thanks for any advice anyone can offer
First of all I understand that you didn't use the Auto Throttle (AT).This is the best control aircraft power/speed. At a certain descending rate it is clear that the aircraft gains speed although TRH at idle. Using speedbrakes (working at a certain speed/ALT) cannot always help to reduce speed. You should level aircraft for reducing speed and then begin again descending at a more moderate rate...
First of all - thank you very much for your reply. I appreciate it.
For clarification, I have tried using the auto throttle too and still my speed increased when going 1500 feet per minute. I was always under the impression that airliners descended at 1500-2000 feet per minute. Maybe I am wrong on this. What is the normal descent rate for this airbus?
Thanks again for your help.
Do the different engines make a difference?
Thank you for joining in. I don't think so. Looks like an external/ cosmetical option only. Haven't tested the fuel consumption though.
I have tried using the auto throttle too and still my speed increased when going 1500 feet per minute. I was always under the impression that airliners descended at 1500-2000 feet per minute. Maybe I am wrong on this. What is the normal descent rate for this airbus?
Im also under the impression that the drag of the A320 is too little. Most of my descents (from T/D to RWY) even though the autopilot/autothrottle is in full control and following the exact VNAN path it calculated at the beginning, on some flights I have to use the Speedbrakes 80% of the descent. This doesnt seem normal.
I was on a real A320 today with lufthansa travelling to Geneva from Frankfurt (EDDF-LSGG) and the pilot didnt have to use the Speedbrakes once.
When I tried this exact same flight path (i looked it up on Flightradar24) I had to use speedbrakes again most of the descent.
Either the VNAV is calculating a too steep path or the default drag isnt enough.
Example (Check screenshot):
When on the ILS glideslope of Geneva RWY 23 (3%) Intercepted at SPR at 7000ft and "Green dot speed" (~210kts) I was forced to put speedbrakes full and the gear down because my plane simply wasnt slowing down and above 200kts so that my flaps stayed at 1 and not 1+F. BY the time i was fully configured for landing (having needed the Speedbrakes until flaps were full) i was at 500ft above the ground.
I am far from an A320 expert but this just doesnt seem normal if I compare it to other aircraft behaviors of mine (B757/767/777/747..)
I find the JAR320 really underpowered. Numbers from TOPCAT and what i get while taking off differ by a huge margin. I often can barely lift off by the end of the runway. Are you planing to correct engine thrust?
Digging further into the problem, it seems the problem occurs only with the XP11 version (3.0+). The thrust in XP10 versions was ok. It seems like the engines were not entirely adjusted for XP11
john82088 wrote:I have tried using the auto throttle too and still my speed increased when going 1500 feet per minute. I was always under the impression that airliners descended at 1500-2000 feet per minute. Maybe I am wrong on this. What is the normal descent rate for this airbus?
Im also under the impression that the drag of the A320 is too little.
That is in fact an old known problem. We discussed it in the past a lot, but problem remain until now... :-(
I don't know what kind of algorithm developer use for descent/drag/speed reduce, but I know that the aerodynamic rules should be common. In the real flight world airliner are descending at different rates depending on multi factors, but they all usually don't need to deploy speedbrakes to hold speed. So question is what is the correct descent rate from TOD to FL100? Also it will be interesting to now about descent behavior of Other A320 models in the sim world. If you also fly those models please tell us about airliner parameter during descent (video?) https://youtu.be/YwXlS78i5wo
Testing the last SSG B748 version I was impressed about the flight characteristics during descent. Even with strong tailwind, I was able to reduce speed during approach without using speedbrakes or rarely deploying them for some seconds. In one case I was way over the approach slope and needed to make a steep descent to final approach. I used the speedbrakes to hold speed and the aircraft continued flying smoothly to runway. It is a completely different model but under same aerodynamic rules as I mention before...... https://youtu.be/v3yuIBK-Fmo
john82088 wrote:Question on Speedbrakes: I have a difficult time slowing down even when using speedbrakes. When I am descending, I put the throttle on idle, put speedbrakes to full and still I am increasing speed when descending at 1500 feet per minute. I am new to airbus, is this normal or is there something I am missing on the airbus?
Thanks for any advice anyone can offer
First of all I understand that you didn't use the Auto Throttle (AT).This is the best control aircraft power/speed. At a certain descending rate it is clear that the aircraft gains speed although TRH at idle. Using speedbrakes (working at a certain speed/ALT) cannot always help to reduce speed. You should level aircraft for reducing speed and then begin again descending at a more moderate rate...
Also I'd like to notify thing that not every pilot knows. A320 will allow higher speed brakes when AP is off. Meaning that if you have full speed brake and you disable AP then speed brakes will get a little bit higher.
leghorn wrote:I find the JAR320 really underpowered. Numbers from TOPCAT and what i get while taking off differ by a huge margin. I often can barely lift off by the end of the runway. Are you planing to correct engine thrust?
Digging further into the problem, it seems the problem occurs only with the XP11 version (3.0+). The thrust in XP10 versions was ok. It seems like the engines were not entirely adjusted for XP11
After more than 4 hours of testing i came to the conclusion that TOGA thrust is correct. It's just the FLEX coding that's incorrect. Every degree of celsius increase in FLEX, reduces thrust more than it is shown on the graphs. So, using a FLEX of 67 (something that's very common on everyday operation in Europe) reduces thrust by a LOT more than it should, hence the extremely long take-off run and initial climb gradient. It will be very nice if developers address FLEX values.
ilankrt wrote:john82088 wrote:Question on Speedbrakes: I have a difficult time slowing down even when using speedbrakes. When I am descending, I put the throttle on idle, put speedbrakes to full and still I am increasing speed when descending at 1500 feet per minute. I am new to airbus, is this normal or is there something I am missing on the airbus?
Thanks for any advice anyone can offer
First of all I understand that you didn't use the Auto Throttle (AT).This is the best control aircraft power/speed. At a certain descending rate it is clear that the aircraft gains speed although TRH at idle. Using speedbrakes (working at a certain speed/ALT) cannot always help to reduce speed. You should level aircraft for reducing speed and then begin again descending at a more moderate rate...
Also I'd like to notify thing that not every pilot knows. A320 will allow higher speed brakes when AP is off. Meaning that if you have full speed brake and you disable AP then speed brakes will get a little bit higher.
Very true. AP off allows full speedbrake deployment. Regarding descent rates, etc, like other airliners can go down and slow down but usually not do both well at the same time. Especially if you are not in a managed mode, and even then, you will find yourself often reaching the upper limit of the bracketed speed in the descent.
In a managed profile descent, you should have an easier time managing the speed but I almost always have to use 1/2 speedbrakes at some point to meet a speed restriction on the descent. If you are doing a manual descent or using VS, reduce your descent rate. Slow down before you go down as much as possible. Many STAR approaches will allow you to do a nice idle or near idle descent, hitting restrictions along the way at around 1,500 to 2,000 fpm descent rates. But manually or VS you have to dial that in your self and manage your descent rate along with use of SB where necessary.
With the Airbus, whenever I fly on them I almost always see/hear the SBs deploying on descent. If you live anywhere on a STAR where there is an approaching speed restriction in the descent, you will actually hear the Airbus speedbrakes deploy. It sounds like a deep "Hoooowwwwww" sound. Then when they retract you will hear "Wooooooooah" Almost sounds like it's the engine throttling down an up but it is the SBs. Yet another unique oddity of the Airbus.
Aaron
Saw a preview of the upcoming Flight Factor Airbus A320 yesterday... Sadly, this may be the beginning of the end for the Jardesign A320.
Saw a preview of the upcoming Flight Factor Airbus A320 yesterday... Sadly, this may be the beginning of the end for the Jardesign A320.
This is very unfair to write here.
Iv'e been using the JAR A320 and A330 for years. I may be looking forward to Flight Factors release, but these JAR aircraft are also amazing in my opinion and have brought me much enjoyment. I will fly them for years to come. Also agree with the previous post being offensive.
I also think that is very unfair.
Yeah maybe that was a bit harsh... I do apologise. Flight Factor's A320 does look good mind, and it's just that I'm not sure how the JARDesign A320 will pan out in the future yet. JARDesign does have several advantages on its side though, such as the engine options, BSSS sounds and great aesthetics.
One very big problem is dome light. It really has to be completely night that you will notice any difference. Did flight at evening and no dome had only slight effect when set to bright.
when comes the update for XP11.05A320. now the AP automatically disengage after STAR en by entry the SID.
more people with this issue?
when comes the update for XP11.05A320. now the AP automatically disengage after STAR en by entry the SID.
more people with this issue?
I have the same problem with the AP. Since update xp11.05r2 the AP don't work. With xp11.05r1 it was ok.
Hello at all,which is last version A320 for xp11.05?
Hello at all,which is last version A320 for xp11.05?
3.2 r1
be sure, that you use X-Plane 11.00-11.01
as per the very first Post...
be sure, that you use X-Plane 11.00-11.01
as per the very first Post...
I also works perfectly fine with 11.05
marvin.palmer wrote:be sure, that you use X-Plane 11.00-11.01
as per the very first Post...
I also works perfectly fine with 11.05
Well at least not for me. Was going to do late night flight since last one was ages ago. PFD and ND were black. ECAM did show information but PFD/ND didn't. I tried to enable/disable reflections and play around with graphics settings and still nothing.
Overall I'd love to hear from Jar what is going on. Is this forgotten project? We haven't heard anything for ages and nothing has been told about future updates other than 3.2r2 news in sim that messed everyone minds.
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