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Post by VSL-Admin on Feb 24, 2017 21:56:20 GMT
Hi taildraggin, pipergiallo,
Propeller high rpm while engine is off: X-Plane issue...while you can set a prop reduction gear ratio, you get a windmilling propeller without motor/gearbox resistance while it is shutoff. All of the included aircraft in X-Plane are set with a reduction ratio of 1. Other settings are preventing the prop from speeding up...(in the Eurofox v003 it is 2.43, as it should be in the Rotax 912 for the Eurofox).
I've found out that setting a reduction ratio to the gearbox messes up the rpm while windmilling. I will have to check this issue with Austin (meyer), to see if it is a bug...
Meanwhile, in a day or two, I will update the Eurofox with the "common settings", and this issue will be solved...
Pipergiallo, pitch up moment tendency after take off: you are right, and it is related also to the rpm issue (prop performance at low airspeeds and rate of aircraft acceleration), as well as to the preset trim settings for takeoff. I will tune it together with the rpm fix.
Regardless to these issues, the update to v003 was needed, and in a couple of days it will stabilize into a fine tuned Eurofox.
Thanks guys for the feedback! Most appreciated.
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Post by tarutino on Feb 24, 2017 23:20:54 GMT
Great Update!!! Nearly nothing to complain ;o) Maybe a little Wishlist? I would really like: HSI with knob to correct the attitude bar, AI with millibar, a pitot tube ;o) , an ASI in km/h or alternatively Knots, and for longer distances and to pick up a new coffee an AP...... (no kidding) You did a great Job, this plane was really missed! Thanks!
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Post by VSL-Admin on Feb 25, 2017 8:24:42 GMT
Great Update!!! Nearly nothing to complain ;o) Maybe a little Wishlist? I would really like: HSI with knob to correct the attitude bar, AI with millibar, a pitot tube ;o) , an ASI in km/h or alternatively Knots, and for longer distances and to pick up a new coffee an AP...... You did a great Job, this plane was really missed! Thanks! Hi! Thanks:) Ok...next week I will have to make some decisions regarding the A220... Your "whishlist" might become handy; the A220 looks different, not only in colour but also with a slightly different wings configuration (swept foward a bit), and different cockpit panel. I haven't decised yet how far I will take some of the differences. And...once I'll be 100% satisfied with the flight model (now I'm about 95%), some "touches" will be added to details (fuel caps, pitot tubes etc...). Next week, hopefully, all of these issues will be addressed...along with the A220
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Post by tarutino on Feb 25, 2017 10:15:36 GMT
One Issue may has to do with my specific Config, the choke is of when pulled....? Did i missed something? Another thing is descending from high altitude brings oil and water really down. In my real Eurofox i have Thermostats, which keeps temperatures in Limits. May at least the Oil flap should become alive. Just a thought. Thomas
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Post by VSL-Admin on Feb 25, 2017 12:05:27 GMT
One Issue may has to do with my specific Config, the choke is of when pulled....? Did i missed something? Another thing is descending from high altitude brings oil and water really down. In my real Eurofox i have Thermostats, which keep temperatures in Limits. May at least the Oil flap should become alive. Just a thought. Thomas Hi Thomas! Choke should be "pull to operate". I will check this out later today. Oil flap - good point. I'll have to figure how to simulate this one in a "out of the box" X-Plane (in principle, I'm not using/creating plugins for my projects, and these parameters cannot be simutated in X-Plane "as is"). I'll think of something... Thanks !
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Post by tarutino on Feb 25, 2017 16:25:42 GMT
Yes, if choke is pushed in, the engine cuts..... :/
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Post by VSL-Admin on Feb 25, 2017 19:37:43 GMT
Solid update, thanks. One thing, which may be an x-plane issue, when attempting engine out procedures, the engine continues to sound (even with all electrics, mags, and switch turned off). I would expect the prop to windmill until a slow enough airspeed is obtained, but if the engine is shut off, then the only sound should be the engine being turned over by the windmilling prop. Again, it may be an x-plane problem. Enjoying the E-fox immensely and looking forward to the Pheonix. Hi! Amazing thing just happened! I've just cracked this one! It was a "fight" between several engine variables in the flight model. The reduction gearbox of the Rotax 912 (ratio of approximately 2.43) is now being simulated properly!
Edit: (...along with additional variables "juggling"... but all within the plausible/realistic borderlines of the specifications of the engine and the propeller...what makes me really happy.). It solved some other issues also (some of which are minor, but probably were noticeable by the real EuroFOX flying guys). Next update is going to be to v003.1 (the decimal point number is for flight model fixes only, while change in the whole number, as for v004, represents a major update release with multi-aspect updates). In this upcoming update (v003.1) which I will release hopefully tomorrow:- When you shut off the engine during flight, it will not windmill easily, but will tend to stop. You will hear nothing but the sound of the wind (and your heartbeats), as you will look for a safe spot to land
- When you set the engine to IDLE, while working (but not only to idle...) rpm will be more solid; it will get higher and lower upon the given airspeed, but in a more realistic fashion.
This is a huge "win" in terms of overall performance of the EuroFOX. I am really excited now
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Post by taildraggin68 on Feb 25, 2017 21:32:57 GMT
Solid update, thanks. One thing, which may be an x-plane issue, when attempting engine out procedures, the engine continues to sound (even with all electrics, mags, and switch turned off). I would expect the prop to windmill until a slow enough airspeed is obtained, but if the engine is shut off, then the only sound should be the engine being turned over by the windmilling prop. Again, it may be an x-plane problem. Enjoying the E-fox immensely and looking forward to the Pheonix. Hi! Amazing thing just happened! I've just cracked this one! It was a "fight" between several engine variables in the flight model. The reduction gearbox of the Rotax 912 (ratio of approximately 2.43) is now being simulated properly!
Edit: (...along with additional variables "juggling"... but all within the plausible/realistic borderlines of the specifications of the engine and the propeller...what makes me really happy.). It solved some other issues also (some of which are minor, but probably were noticeable by the real EuroFOX flying guys). Next update is going to be to v003.1 (the decimal point number is for flight model fixes only, while change in the whole number, as for v004, represents a major update release with multi-aspect updates). In this upcoming update (v003.1) which I will release hopefully tomorrow:- When you shut off the engine during flight, it will not windmill easily, but will tend to stop. You will hear nothing but the sound of the wind (and your heartbeats), as you will look for a safe spot to land
- When you set the engine to IDLE, while working (but not only to idle...) rpm will be more solid; it will get higher and lower upon the given airspeed, but in a more realistic fashion.
This is a huge "win" in terms of overall performance of the EuroFOX. I am really excited now Sounds awesome. Look forward to it. Top notch work, and I appreciate it.
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Post by be77solo on Feb 26, 2017 0:08:06 GMT
Thanks for keeping us updated and for your hard work! Excited to try the new version!
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Post by bminton on Feb 26, 2017 0:24:06 GMT
I feel that I must commend you on your development approach, not only on the technical side, but also how you continually communicate the development process with the community. It is very refreshing to have such a clear insight into the development of an aircraft. I don't think the typical user expects hard release or update dates, but certainly appreciate being informed on where the project stands and where it is headed. Congratulations on not only creating one of the best GA planes in X-Plane, but for how you communicate and respond to your customers. Very much appreciated!
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Post by VSL-Admin on Feb 26, 2017 14:37:35 GMT
Thank you all for your great feedback. Much appreciated!
ok... A note regarding the updates: Updates pace will ease out now; after achieving my goal for the 1st phase of the project, which is a solid aircraft that handles in a high level of accuracy. I've just released update v003.1. It is a major update release, especially for the flight dynamics model. Update Log (26th Feb 2017, to version v003.1) - main features:This is a Major Update Release, and the last pre-planned one to the flight dynamics model, as it reached to its final phase.Flight dynamics model tuneup - final phase:Rotax 912 engine and propeller simulation overhauled: Idle, Max static RPM, RPM changes due to airspeed, engine behavior when cut-off, reduction gearbox working very good now. Total performance of the EuroFOX is now tuned to its final phase; aircraft handling characteristics is now solid in all flight regimes. Systems:Fuel, stater, choke systems tuneup. 3D Modeling additions:Wing fuel tanks Fuel caps (above both wings). Pitot tube (under the right wing). Mass balances for the flaps (tubes that are sticking out in front of each flap). Next update will incorporate the A220 model into the package! Thanks again
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Post by pipergiallo on Feb 26, 2017 21:59:48 GMT
But when the euroFOX will be just perfect, how will we cope with the lack of this interaction? How without the questions and the answers, the updates and the tuning... All this has now become part of the gratification... Thanks for your work, very appreciated!
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Post by taildraggin68 on Feb 27, 2017 1:47:27 GMT
Yet again, you have achieved a level of advancement . Now when doing engine out drills, the pulse will quicken as it gets real quiet . Thanks again for the continued communication and updates. I look forward to the 220 version. I'm really looking forward to the Pheonix with the results of the E-Fox. I already have some flights planned to recreate with the Pheonix. Great work.
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Post by VSL-Admin on Feb 27, 2017 9:17:52 GMT
Thank you guys Not to worry about incoming updates...X-Plane development is delivering the need for a constant analysis and fixes. I like it! Other "regular" updates are always to be expected...as part of my design concept. The last 001 to 003.1 updates had to be fast paced in order to get the aircraft, on time, into a good, stable starting point for the long-run update plan (like the solid rocket boosters or 1st stage of a missile, when you put a lot of energy to get the thing in the right, stable position during the initial phase of its flight). The Phoenix Air Phoenix is an amazing aircraft and it is going to be so great making it! (it is in advanced phases of development...it is alive already, looking great. With some "tailwind", the initial release will be during March 2017...it's 3-4 weeks from now!).
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Post by tarutino on Feb 27, 2017 16:38:54 GMT
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