Kwiatek

I dont dont but for me Su-27 behave strangly in the air. Trim not work for me ( both system), it is very unstable in flight comparing to F-15, got much worse stall and spin characteristic. Also there is very strange behaviout with hard push stick - plane imidietly go on back. Also negative G redout is very quickly and pilot got blackout. For me these new FM for Su-27 is very strange. F-15 fly for me much more stable and smoother.

In DCS i have more doubts about stall characterictic above critical angle of atack. All these planes stall at critical angle of attack but you could keep full stick back and have no fear of get spin. I mean Fw 190 or P-51. I think in these area DCS is still too forgiving. I got occasionaly spin in FW 190 only in verticals where i lose too much speed. In turns there is no fear to get spin at all. Also i think in DCS prop planes fly too much " on rails". There is little too low oscilation after control movements. So prop planes in DCS fly more like jets. But no sim is perfect. BOS got too much oscilation, expecially for German planes, CLOD got very bad ground handling ( taxi, take offs and landings) but better handling in the air ( not on the rails but no too much oscilation, nice stalls and spins).

I think some dont understand difference between roll and barrel roll. If plane - expecially heavy ( bomber) could do barell roll it doesn't mean that it could do clasical straight roll expecially right after take off. It is a huge difference in reality.

Expecially if He-111 could do a near straight roll ( repat level flight roll) right after take off :P I think He-111 IRL probably could make barrel roll ( like in video with Beoing 707) but could not stand a normal roll ( in level flight) even at higher speeds.

Yep but even glider which have power to weight= 0 ratio need required speed to make correct loop ( i know a little about these casue i fly gliders and aerobatics too :) ). So if glider need e.x. 180 kph to make a loop you dont do it with e.x. 120 kph casue you will stall on the top. In our cases ( videos from BOS or DCS) with such low speed after take off and also some drag ( gears, flaps) i think power to weight ratio is quite important. It decide if plane with such low initial speed would be able to do loop or no :)

Exacly like you wrote there is need some tricks to do some manouvers - e.x barel roll not straight roll and have some energy at start. So not every manouvers IRL could be possible like it is in some sims. Im sure e.x. He111 could not IRL make near straight roll after take off like it is possible in some game or make loops at so low speed. You mean something like famous Su27 Cobra in WW2 prop planes ? :P

If Bob Hoover made it in his plane it is not mean that he would be able to do in He111 right after take off. He-111 has different size, weight and P/W ratio. Cant imagine how such plane like He-111 could do near straight roll after take off or loop at such low speeds. If you watch carefully Bob Hoover videos or other RL videos with more heavy machines doing loop or roll you will notice that for all these manouvers there is need required energy ( speed or alt) Bob Hoover made in his ME plane roll after take off - but he made it smartly - after take off he gear up, increasing a speed in level flight then made high pitch barell roll. These is huge differences. So dont belive that all what you see in simulators could be done similar way IRL. Not all from these things.

Not sure why, doesn't metter speaking about just possibilty different planes to do such things like in videos. but even with near empty load He-111 would have about 0.25-0.30 HP/KG (hard to calculate better without hard data) - not such high so. Also big long wings, low entry speed - impossible to make straight roll after take off. I think quite impossible even at high speed to make straight level flight roll in such plane. Barell roll probably yes but not straight.

Question of entry speed and power to weight ratio. You probably used WEP also. With such low fuel load, full power and minimum required speed it should be possible to do. Regarding He-111 in BOS i can't belive it could be possible to do immidietly after take off. Maby with planty of entry speed it could be done but only barell roll in He-111 ( start with pitch up moment) dont think so it could be possible to do roll in level flight with He-111.

Surly i got it off. I play P-51 since relase so i know these game and realism settings.

For me even without wind there is something strange in take off both in P-51 and D-9 expecially with take off flaps. Planes react something strange too me expecially when rising tailwheel - they start to dance. There should be some gyro moment due to down force to roating prop but at sufficent speed >100 kph it should be easly corrected by rudder in natural way. Even if i got some experience with taildraggers IRL and in sims i still got some problems with clean take offs in DCS. I think BOS make it more accurate and natural way to me. Landings other hand are not a big problem in DCS. IRL landings need much more attention and are more difficulty to master ( expeciall with taildraggers) then take offs. In DCS take offs are harder to do clean then landings which suprise me a lot.

From my RL flying taildraggers experience i think landing in DCS ( P-51 and D-9) are quite realistic and natural to me. I rather think that something is not correct with take offs - both in P-51 and D-9. Planes behave during take off runing not natural for me, make crazy things expecially with a little flaps ( take off flaps). Of course never fly as such high power taildragger but i think BOS simulated ground handling and take offs much better and realistic to me. DCS is too " mechanic" ( or robotic) to me hard to explain but i feel it not natural. Truly speaking prop planes take off in DCS are much harder to do correctly then landings. So something is not right. Landing IRL are much difficult to do corrctly then take offs. In DCS there is opposite.

Comparing to my real life experience with taildraggers i prefer BOS ground handling expecially take offs then in DCS. DCS is little strange to me and too mechanic ( not natural way like it is in BOS). In BOS planes during take off handlig exacly like i expect and react nicly. DCS is other story. Funny is that in DCS landing is much easier then take offs in prop planes ( P-51 or D-9). IRL landings are much far harder to do correctly then take offs.

Great video. 109 is flying very smooth even with slats open. Also nice roll rate. Have better then Fw 190 A-3 in BOS :) Amazing plane. I have some doubts about take offs in DCS. It is little strange even with P-51 or D-9. Suppose with 109 it would be even much strange in worse. I like take off in BOS and ground handling - is much more realistic then in DCS unfortunately.

Problem is not with recovery procedure which is ok in DCS F-86 but rather with enter in correct spin in right direction.

Well regarding spin of F-86 i think i post here some my thoughs but someone delete my post??? I read RL manuals for F-86 and there is that F-86 was nothing unusall in stall/spin characteristic and its behaviour was typical as for a fighter plane. Tryin DCS F-86 i found that rather F-86 dont behave in typical way. There is hard to spin it to the same side as rudder input. Maby rudder is too less effective in F-86 ( these is another topic about these) thats why DCS F-86 behave these way?

I think you dont fly P-51 if we are talking about risk of damage airframe :P

Yea i dont have any assist or autorudder on.

When i bought D-9 about DCS 2 updates before ( 3 weeks ago) i remember that D-9 got nice spin when i push it hard. After todays update i made some test flight and i found that spin is near impossible to do in D-9 even with hard push stick in turns. Where spins gone? Yo-yo there were some changes regard these area? Or previous uptade with fixed rudder working change some things unintentionaly?

Aerospace Medicine. Funk & Wagnall's Encyclopedia. "If a force of 4 to 6 g is sustained for more than a few seconds, the resulting symptoms range from visual impairment to total blackout." 4–6 g Wayne, Tony. Ride Physiology. Roller Coaster Physics. Virginia Department of Education "As the g forces climb up toward 7 g's, you sink further still in the seat. You can no longer see color. Everything appears in black and white. An instant later, the passenger next to you disappears from view. Your field of vision is shrinking. It now looks like you are seeing things through a pipe. The front corner of the car disappears from view as your peripheral vision disappears. The visual pipe's diameter is getting smaller and smaller. You sink into the seat further still as the number of g's climb further. In a flash you see black. You have just "blacked out." You are unconscious until the number of g's are reduced and the blood returns to your brain." "Inside Loop [diagram] 8 g blackout limit A person passes out because of the lack of oxygen in the brain." 7–8 g Pryor, Loyd. Roller Coaster Corkscrew. Georgia Institute of Technology. "The human threshold is around +7.5 G's, for a trained pilot in a 'G suit.'" 7.5 g

I think that constant 7 G without blackout symptoms is too high even for little more horizontal pilot position. Still in Fw 190 pilots sit not lie so even if got more deeper postion then in P-51 difference shouldn't be so huge - i think no more then 0,5 G. Lying position could rise G tolerenace about 1 G. In DCS D-9 pilot start to blackout ab. 7.5 G. Wonder what Yo-Yo could say about these?

I notice that there is really hard to blackout with Fw 190 D-9. I got blackout realism setting ( simulation mode). With P-51 it work good - at 6 G pilot start to blackout. Checked with D-9 and with const 7 G i didn't have any blackout symptoms. Also i wonder high speed elevator effectivness which is actually very good as for higher speeds the same no risk with damage of plane airframe.

I tried with new update and now is much better to take off. I tried both with take off flaps and without flaps. Good result give trim up ab. + 1 deg. I think ED and Yo-Yo made brilant job with flight model and flight physic both P-51 and Fw 190 D-9. With new update and notice that rudder working was corrected and now it is more realistic to me. Before it was more like in Battle of Stalingrand Fw 190 ( and others) - before it was more roll effect with full rudder usege. Actually both P-51 and Fw 190 D-9 from DCS are the best modeled prop planes i ever tried in sims. Regard flight model of Fw 190 D-9 in DCS these plane fly like i think it should fly. Cant wait for 109. Very good work !!!

With P-51 take off is strengly easier without take off flaps so you could right that with D-9 could be similar. I checked D-9 with flaps and the best is to raise tail about 150 kph - little less or little more and plane became very unstalbe. It is similar to P-51 with take off flaps. I think these is not exacly correct. I think rising tail should be ok between 100-150 km/h in both of these planes without such problems also with take off flaps which should rather help with taking off then disturb like in DCS.

Hmm i tried rise tail at slowier speed but things went much worse if i remember, I will recheck it.