----------------------------------------------------------------- The A318-111 is a A318 model with CFM56-5B8/P engines and a bigger vertical tail (like all A318 ?), operated by Frontier Airlines. Each of it's planes carries a picture of a different animal living in the northwestern USA. .mod files: My 3D models of the A318 are work-in-progress for some time now. I like especially the animal pictures on the Frontier airplanes, but I simply have no time to model them in RMK. But the A318 by 'dl3fy' (Jürgen Dreyer) comes close to what I aimed for, though it is somewhat in need of improvement. One of these models is now added to my parameter sets. Thank you Jürgen! Jürgen's model of the British Airways A318 is especially appropriate. Even though the REFLEX model is lacking spoilers, it yet has the ability for steep approaches. British Airways is flying the A318 from London City Airport due to this ability. The Extended Range Operations ability, in this case London - New York via Shannon, is of course not relevant in REFLEX. This version is used for the REFLEX models. It has symmetrical landing gear and got new engine nacelles which are as well symmetrical to the centerline. The other two versions (original Airbus and Christmas paint scheme) had slightly but noticeably asymmetric landing gear and engines. .par files: The parameter file 'A318-111 JP.par' renders the flight behaviour of a 1:10 scaled model powered by two JetCat P80 turbines with a thrust of 80 N each. The parameters were mainly derived from information given by Thilo Kyritz at http://www.thilokyritz.de/ for his DC-9. The 3.41 m / 134 in wing span, 123 dm² / 1900 in² wing area and 19.5 kg / 43 lb weight give a 160 g/dm² / 52 oz/ft² wing loading for the A318. This is fairly high but causes no problems at the given model size. Engine thrust was set to only half the thrust of the JetCats, still giving a 0.47 thrust/weight ratio. That's sufficient even for grass runways and considerably more than the 0.32 value of the real aircraft. Even a bit more than that is set in the parameter file 'A318-111 JP scale.par' for comparison (32 N per engine), but you'll need a paved runway like that of the Arizona Model Aviators to try it out. The parameter file 'A318-111 EP.par' renders the flight behaviour of a 1:16 scaled model powered by two electric ducted fans (EDF). Assumed are DS-51-DIA (3-ph) fan units by Daniel Schübeler with Plettenberg HP-220-20-A3 S P6 motors. A table at the website http://www.schuebeler-jets.de/ lists a motor weight of 175 g / 6.2 oz, 27 A current draw for the (here needed) 11.5 N / 2.6 lbf static thrust with 12 cells NiCd or NiMH, and 66% efficiency. That all fits pretty well. The model's parameters were derived from information given by Bill Kleinbrahm in his Aufwind 2/2004 article (http://www.aufwind-magazin.de/redaktion/beluga204/) about his Beluga. Consequently, the big 2.13 m / 84 in wing span was chosen and weight was limited to 4.9 kg / 10.8 lb. Now the 48 dm² / 740 in² wing area gives a 102 g/dm² / 34 oz/ft² wing loading which should not be exceeded for good controllability of the model. However, Norbert Rauch states 7 kg / 15.4 lb weight for his A318 at his http://www.rauch-airliner.com/A320E.htm web page. Using the parameter file 'A318-111 EP heavy.par' you may test what would be the flight behaviour. .wav files: The files JetCat.wav and JetCat_.wav are not recorded but only processed by me. I only cut out short pieces where loudness is fluctuating not too much. Years ago, they were published with jet models on http://www.rc-sim.de - creator unknown. They should fit better than other jet sounds recorded from real planes. That holds for the files CFM56_Turbo.wav and CFM56_Turbo_.wav as well. They were published probably by Jürgen and I modified amplitude/loudness. This sound is assigned to the scale version. For both variants of the model (jet and EDF) the thrust/weight ratio is set to 0.47, resulting from information given by Bill Kleinbrahm. He confirms it to be sufficient while Thilo Kyritz states his model to be "overpowered". Only wing loading has to be appropriate for the size of the model. But here I even assumed effective wing flaps including leading edge slats (which are not renderable in REFLEX). The model is trimmed to take-off and climb at 30% flaps (15°) and full power. Level flight is then stable at a power setting of 40 to 50%. On final approach, set full flaps (50°) and much power to adjust a shallow glide slope. For landing, both sticks should be pulled back slowly and at the same time. It's nicely simulated that you are in trouble if one engine fails. Set up to 0.5 %/s 'Probability of engine failure' in the simulation parameters (F6). There are neither thrust reverse nor wheel brakes in REFLEX. As a replacement, the landing gear friction is set quite high. With only one engine working the model hardly rolls, but with both engines even the scale version takes off without problems. My demo flight "A318 in Muncie" (hit F9 in REFLEX) shows the scale version at the AMA field in Muncie, USA. This flying field as well as the two other fields "in the USA" (Arizona Model Aviators and Propnuts Las Vegas) are well suited due to their paved runways.The latter two may require some 2 or 3 Beaufort wind due to short runway. "In Germany", Ganderkesee has plenty of runway and decent wind set as default. The field "Flugplatz_von_Peenemuende" (from http://www.Szenerien.de/) is big enough, "MFG Klagenfurt - St Johann im Rosental" (from http://www.RC-Sim.de/) is short and needs 3 Beaufort wind but is well suited to practicing. More REFLEX models and the latest versions are on my page http://time.hs-augsburg.de/~erd/Modellflug/textDownloads.shtml Enjoy! Burkhard Erdlenbruch mailto:Burkhard@Erdlenbruch.de http://time.hs-augsburg.de/~erd/Modellflug/textReflex.html -----------------------------------------------------------------