Re: [Flightgear-devel] New aircraft for CVS - Pitts S1C
Maik wrote; > I have tested Daves modification and I like it. I think the Pitts is > more realistic with these modifications. But the glide angle is bit > too > > glider-like... > I vote for committing this modification to cvs. > > Stuart, thanks for this nice small aircraft. A pleasure as always. Dave Perry has been working on some further improvements, which improve the drag characteristics, and I have made some small changes myself to the gear so that they are slightly more forgiving. The sum of these changes is available from http://www.nanjika.co.uk/flightgear/pittss1c.xml. I would suggest waiting until Dave has had a chance to comment on my gear changes before committing them. My taildragger experience being nil, the temptation is always to make it easier to handle! In fact, despite a good couple of hours practising only take-offs and landings, the number of times I've managed to take off successfully can be counted on one hand. Feel free to laugh that I've created an aircraft I can't actually fly :) Dave has been giving me some pointers on better tailwheel technique, which I will add to the help file in the near future. -Stuart ___ Want ideas for reducing your carbon footprint? Visit Yahoo! For Good http://uk.promotions.yahoo.com/forgood/environment.html - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] New aircraft for CVS - Pitts S1C
Hi Dave and Stuart, dave perry schrieb am 12.11.2007 00:16: > dave perry wrote: > >> Stuart Buchanan wrote: >> >>> The model and FDM are fairly basic, but it is quite fun to fly, and a >>> challenge to land. Comment and any modifications are very welcome. >>> This is my first YASim aircraft, so I'm sure the FDM could benefit >>> from some tuning. >>> >>> >>> >> Stuart, this is a really nice addition. Taking you at your word, I >> spent some enjoyable time last evening tweaking the yasim fdm. Since >> this activity can be subject to personal preferences ... >> > You may want to try setting the twist to zero for both the wing and > mstab > Nice to have a really aerobatic AC in FlightGear! Thanks again Stuart. > > I have tested Daves modification and I like it. I think the Pitts is more realistic with these modifications. But the glide angle is bit too glider-like... I vote for committing this modification to cvs. Stuart, thanks for this nice small aircraft. Maik > - > This SF.net email is sponsored by: Splunk Inc. > Still grepping through log files to find problems? Stop. > Now Search log events and configuration files using AJAX and a browser. > Download your FREE copy of Splunk now >> http://get.splunk.com/ > ___ > Flightgear-devel mailing list > Flightgear-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/flightgear-devel > > - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] New aircraft for CVS - Pitts S1C
dave perry wrote: > Stuart Buchanan wrote: >> The model and FDM are fairly basic, but it is quite fun to fly, and a >> challenge to land. Comment and any modifications are very welcome. >> This is my first YASim aircraft, so I'm sure the FDM could benefit >> from some tuning. >> >> > Stuart, this is a really nice addition. Taking you at your word, I > spent some enjoyable time last evening tweaking the yasim fdm. Since > this activity can be subject to personal preferences ... You may want to try setting the twist to zero for both the wing and mstab. This makes the inverted maneuvers as easy as the normal maneuvers and reduces the tendency to immediately snap roll when inverted and adding down elevator to climb inverted. It is great fun to roll inverted soon after lift off and climb out inverted. Takes gentile control movements though. From KSFO, I flew inverted to the Golden Gate and still inverted flew under the bridge and then into an inverted loop. Another challenge, after take-off and initial climb out to about 500 ft, roll inverted, turn back and fly down the runway inverted at about 50 ft. Climb inverted to about 1500 ft, pull the power and ease back on the stick to do the 2nd half of a loop to the runway and land. With the patch, this is not that difficult. Even easier with the twists set to zero. Nice to have a really aerobatic AC in FlightGear! Thanks again Stuart. - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] New aircraft for CVS - Pitts S1C
Stuart Buchanan wrote: The model and FDM are fairly basic, but it is quite fun to fly, and a challenge to land. Comment and any modifications are very welcome. This is my first YASim aircraft, so I'm sure the FDM could benefit from some tuning. Stuart, this is a really nice addition. Taking you at your word, I spent some enjoyable time last evening tweaking the yasim fdm. Since this activity can be subject to personal preferences, I am attaching a diff file and will comment on the changes, and my reasons for each. I have never flown the real pitts, but have had several extended discussions with several pilots at my field that fly it regularly. 1. CG location - It seemed to be very tail heavy on my first flight, so I googled to find where the CG should be. Could not find the plan numbers, but did find a 1/3 scale RC CG recommendation. So added ballast to move the CG to x= -1.37 m which should be very similar to the location recommended for the RC pitts. I always use the 3d model and $FG_ROOT/bin/yasim to get the CG where documentation says it should be. This made a very big difference. 2. Approach configuration - In spite of the documentation, this needs to be the landing stall configuration. I found the landing stall speed using google and estimated the aoa. 3. Increased the roll rate - more flap0 lift and decreased twist. Decreasing the twist also makes stalls quicker, more positive which helps the snap rolls and spins. 4. The real AC snap rolls easily and spins easily (aerobatics). So decreased the wing and mstab stall widths. 5. Adjusted the cruise and take-off rpms so the engine behaves more like a fixed pitch prop should (i.e at full throttle, the rpm should increase as the AC accelerates. Hope this is helpful, Dave Perry ? pitts.diff Index: pittss1c.xml === RCS file: /var/cvs/FlightGear-0.9/data/Aircraft/pittss1c/pittss1c.xml,v retrieving revision 1.1 diff -p -u -r1.1 pittss1c.xml --- pittss1c.xml 10 Nov 2007 17:18:47 - 1.1 +++ pittss1c.xml 11 Nov 2007 21:38:47 - @@ -9,13 +9,13 @@ YASim aerodynamic model for a Pitts S1C - + - + @@ -27,10 +27,10 @@ YASim aerodynamic model for a Pitts S1C - - - + + - - - + + - + - + + takeoff-power="175" takeoff-rpm="2500" + x="-0.3" y="0.0" z="0.0" mass="160" moment="3"> - + + - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] New aircraft for CVS - Pitts S1C
Hi, Stuart Buchanan schrieb am 11.11.2007 19:17: Heiko Schulz wrote: So much as I know, there are some clubs using a Pitts for aerotowing. Yes, I am sure I saw it myself. I didn't know that - but know knowledge of glider towing is limited to the small number of clubs around our airfield. Thanks for pointing it out. I'm glad there is another use for the Pitts! Maik - please go ahead and add aerotow if you have time/inclination. I've just about used up my FlightGear dev time for the month ;) Please find enclosed a diff. (I am not sure about the correct position of the hitch) . Maik ? pittss1c.diff Index: pittss1c-set.xml === RCS file: /var/cvs/FlightGear-0.9/data/Aircraft/pittss1c/pittss1c-set.xml,v retrieving revision 1.1 diff -u -p -r1.1 pittss1c-set.xml --- pittss1c-set.xml10 Nov 2007 17:18:47 - 1.1 +++ pittss1c-set.xml11 Nov 2007 19:12:15 - @@ -45,6 +45,14 @@ model, instrument panel, and external 3D Pitts S1C + + o + connect tow cable + + + O + disconnect tow cable + Aerobatic Biplane, with 180hp Lycoming O-360 Stall: 57mph @@ -52,6 +60,30 @@ model, instrument panel, and external 3D Vne: 203 Rate of climb: 2650fpm + + + + + + 60 + 1 + 1 + 1 + + 10 + * + 0 + 0 + 0 + +0 +true +0 +0 +0 +false + + @@ -104,5 +136,27 @@ model, instrument panel, and external 3D 1.0 1.0 + + + + O + Open aerotow hook + +property-assign +/sim/hitches/aerotow/open +true + + + + o + Lock aerotow hook + +property-assign +/sim/hitches/aerotow/open +false + + + + Index: pittss1c.xml === RCS file: /var/cvs/FlightGear-0.9/data/Aircraft/pittss1c/pittss1c.xml,v retrieving revision 1.1 diff -u -p -r1.1 pittss1c.xml --- pittss1c.xml10 Nov 2007 17:18:47 - 1.1 +++ pittss1c.xml11 Nov 2007 19:12:16 - @@ -113,4 +113,8 @@ YASim aerodynamic model for a Pitts S1C + + + + - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] New aircraft for CVS - Pitts S1C
--- Stuart Buchanan <[EMAIL PROTECTED]> schrieb: > > Heiko: Any chance you could reply to the _bottom_ of > posts rather than the _top_? > > As someone once said: > > A: Because it makes the reply difficult to > understand > Q: Why is top-posting bad? > > Thanks. > > -Stuart > Yes, I can. But I find this more difficult to read. Sometimes I'm lost between qoutes and anwsers of other postings here... __ Ihr erstes Baby? Holen Sie sich Tipps von anderen Eltern. www.yahoo.de/clever - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] New aircraft for CVS - Pitts S1C
Heiko Schulz wrote: > So much as I know, there are some clubs using a Pitts > for aerotowing. I didn't know that - but know knowledge of glider towing is limited to the small number of clubs around our airfield. Thanks for pointing it out. I'm glad there is another use for the Pitts! Maik - please go ahead and add aerotow if you have time/inclination. I've just about used up my FlightGear dev time for the month ;) Heiko: Any chance you could reply to the _bottom_ of posts rather than the _top_? As someone once said: A: Because it makes the reply difficult to understand Q: Why is top-posting bad? Thanks. -Stuart ___ Want ideas for reducing your carbon footprint? Visit Yahoo! For Good http://uk.promotions.yahoo.com/forgood/environment.html - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] New aircraft for CVS - Pitts S1C
So much as I know, there are some clubs using a Pitts for aerotowing. Regards HHS --- Stuart Buchanan <[EMAIL PROTECTED]> schrieb: > Maik Justus wrote: > > Hi Stuart, > > > > nice aircraft. > > > > One comment regarding the fdm: The aerotow hook is > missing. > > > I didn't add the aerotow hook because I'm pretty > sure no-one would try to tow a glider with a Pitts, > and it's enough trouble trying to handle on its own, > without the challenge of a glider as well! > > That said, I know there are currently a very limited > number of aircraft that are useful for aero-towing, > so if you want to re-add it, go ahead. > > Or maybe we need to convince someone to create a > proper YASim tug... > > -Stuart > > > > > ___ > Yahoo! Answers - Got a question? Someone out there > knows the answer. Try it > now. > http://uk.answers.yahoo.com/ > > - > This SF.net email is sponsored by: Splunk Inc. > Still grepping through log files to find problems? > Stop. > Now Search log events and configuration files using > AJAX and a browser. > Download your FREE copy of Splunk now >> > http://get.splunk.com/ > ___ > Flightgear-devel mailing list > Flightgear-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/flightgear-devel > Heute schon einen Blick in die Zukunft von E-Mails wagen? Versuchen Sie´s mit dem neuen Yahoo! Mail. www.yahoo.de/mail - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] New aircraft for CVS - Pitts S1C
Maik Justus wrote: > Hi Stuart, > > nice aircraft. > > One comment regarding the fdm: The aerotow hook is missing. I didn't add the aerotow hook because I'm pretty sure no-one would try to tow a glider with a Pitts, and it's enough trouble trying to handle on its own, without the challenge of a glider as well! That said, I know there are currently a very limited number of aircraft that are useful for aero-towing, so if you want to re-add it, go ahead. Or maybe we need to convince someone to create a proper YASim tug... -Stuart ___ Yahoo! Answers - Got a question? Someone out there knows the answer. Try it now. http://uk.answers.yahoo.com/ - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] New aircraft for CVS - Pitts S1C
Hi Stuart, nice aircraft. One comment regarding the fdm: The aerotow hook is missing. Maik Stuart Buchanan schrieb am 10.11.2007 18:12: > I wrote: > >> From: Stuart Buchanan <[EMAIL PROTECTED]> >> To: FlightGear developers discussions >> >> Sent: Saturday, 10 November, 2007 1:56:40 PM >> Subject: Re: [Flightgear-devel] New aircraft for CVS - Pitts S1C >> >> >> >> >>> Melchior wrote: >>> * Stuart Buchanan -- Saturday 10 November 2007: >>> >>>> The included livery is for the well-known fictional beer company, >>>> >>> Hmm ... I'm not sure if that's fictional enough. "20th Century Fox" >>> has already sued an Australian brewery for making Duff beer, although >>> they aren't brewing beer themselves, obviously. They are quite >>> greedy and sue-happy, I think. >>> >>> How's that different from using airline liveries? As long as we >>> are depicting real aircraft that's IMHO like painting a picture >>> or making a photo and giving it away, which is perfectly legal. >>> And airlines don't lose anything from it. On the contrary. It's >>> free advertisement. >>> >>> Personally, I don't have anything against the livery. But I don't >>> want to be the one who commits it and is responsible for it being >>> in CVS. I won't complain if someone else commits. :-) >>> >> OK. Better safe than sorry, I guess. I'll update the livery >> to >> >> > something more fictional. > > > New version with FlightGear livery (well, we might as wel advertise > ourselves) available from: > > http://www.nanjika.co.uk/flightgear/pittss1c.tar.gz > > -Stuart > > > > ___ > Yahoo! Answers - Got a question? Someone out there knows the answer. Try it > now. > http://uk.answers.yahoo.com/ > > - > This SF.net email is sponsored by: Splunk Inc. > Still grepping through log files to find problems? Stop. > Now Search log events and configuration files using AJAX and a browser. > Download your FREE copy of Splunk now >> http://get.splunk.com/ > ___ > Flightgear-devel mailing list > Flightgear-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/flightgear-devel > > - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] New aircraft for CVS - Pitts S1C
I wrote: > From: Stuart Buchanan <[EMAIL PROTECTED]> > To: FlightGear developers discussions > Sent: Saturday, 10 November, 2007 1:56:40 PM > Subject: Re: [Flightgear-devel] New aircraft for CVS - Pitts S1C > > > > > Melchior wrote: > > * Stuart Buchanan -- Saturday 10 November 2007: > > > The included livery is for the well-known fictional beer company, > > > > Hmm ... I'm not sure if that's fictional enough. "20th Century Fox" > > has already sued an Australian brewery for making Duff beer, although > > they aren't brewing beer themselves, obviously. They are quite > > greedy and sue-happy, I think. > > > > How's that different from using airline liveries? As long as we > > are depicting real aircraft that's IMHO like painting a picture > > or making a photo and giving it away, which is perfectly legal. > > And airlines don't lose anything from it. On the contrary. It's > > free advertisement. > > > > Personally, I don't have anything against the livery. But I don't > > want to be the one who commits it and is responsible for it being > > in CVS. I won't complain if someone else commits. :-) > > > OK. Better safe than sorry, I guess. I'll update the livery > to > something more fictional. New version with FlightGear livery (well, we might as wel advertise ourselves) available from: http://www.nanjika.co.uk/flightgear/pittss1c.tar.gz -Stuart ___ Yahoo! Answers - Got a question? Someone out there knows the answer. Try it now. http://uk.answers.yahoo.com/ - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] New aircraft for CVS - Pitts S1C
> Melchior wrote: > * Stuart Buchanan -- Saturday 10 November 2007: > > The included livery is for the well-known fictional beer company, > > Hmm ... I'm not sure if that's fictional enough. "20th Century Fox" > has already sued an Australian brewery for making Duff beer, although > they aren't brewing beer themselves, obviously. They are quite > greedy and sue-happy, I think. > > How's that different from using airline liveries? As long as we > are depicting real aircraft that's IMHO like painting a picture > or making a photo and giving it away, which is perfectly legal. > And airlines don't lose anything from it. On the contrary. It's > free advertisement. > > Personally, I don't have anything against the livery. But I don't > want to be the one who commits it and is responsible for it being > in CVS. I won't complain if someone else commits. :-) OK. Better safe than sorry, I guess. I'll update the livery to something more fictional. Good job I made it so easy to re-paint then! -Stuart ___ Want ideas for reducing your carbon footprint? Visit Yahoo! For Good http://uk.promotions.yahoo.com/forgood/environment.html - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] New aircraft for CVS - Pitts S1C
* Stuart Buchanan -- Saturday 10 November 2007: > The included livery is for the well-known fictional beer company, Hmm ... I'm not sure if that's fictional enough. "20th Century Fox" has already sued an Australian brewery for making Duff beer, although they aren't brewing beer themselves, obviously. They are quite greedy and sue-happy, I think. How's that different from using airline liveries? As long as we are depicting real aircraft that's IMHO like painting a picture or making a photo and giving it away, which is perfectly legal. And airlines don't lose anything from it. On the contrary. It's free advertisement. Personally, I don't have anything against the livery. But I don't want to be the one who commits it and is responsible for it being in CVS. I won't complain if someone else commits. :-) m. - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
[Flightgear-devel] New aircraft for CVS - Pitts S1C
Hi All, Over the last couple of weeks, I've been working on a Pitts S1C - the classic aerobatic biplane. It is available for download at http://www.nanjika.co.uk/flightgear/pittss1c.tar.gz. Screenshot at http://www.nanjika.co.uk/flightgear/pittss1c.jpg The model and FDM are fairly basic, but it is quite fun to fly, and a challenge to land. Comment and any modifications are very welcome. This is my first YASim aircraft, so I'm sure the FDM could benefit from some tuning. The included livery is for the well-known fictional beer company, but the .rgb files are very straightforward to edit for those who like to personalize their steeds, or just don't like the yellow colour Could someone commit it to CVS please? Thanks, -Stuart ___ Yahoo! Answers - Got a question? Someone out there knows the answer. Try it now. http://uk.answers.yahoo.com/ - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
