Re: [Flightgear-devel] P-38L-Lightning
On Sat 30 June 2007 10:11, Detlef Faber wrote: > Hello Gerard, > > very nice Aircraft indeed > > > > > > Woohooo, did anyone try putting this baby into a low-speed stall ? > > > > > Make sure to gain enough altitude before ! > > > > > > > > yes it is given to stall at 91 kt, the model with that "crude" FDM > > > > [...] > > > > > > surprised how this beast behaves at stall and how difficult stall > > > recovery might become It would be nice to know if this is > > > actually similar to the 'real' one, > > > > > > Martin. > > > > Diff icult to answer, just this, which has been written : > > > > =>About the only significant short coming of the Lightning was > > spin/.stall recovery, which could be a bear, especially at low altitude. > > That's is why this film cautions strongly against entering a spin below > > 10,000'<= > > the manual states: > > As stalling speed is approached, the center section stalls first with > noticeable shaking of the airplane, however, the ailerons remain > effective. > > In either "power-on" or "power-off" stalls with flaps and landing gear > up, the airplane "mushes" straight forward in a well-controlled stall. > With flaps and landing gear down, there appears to be a slight tendency > for one wing to drop. There is, however, no tendency to spin. Under > these conditions, the nose drops slightly and, as the speed increases, > the wing will come up. > > SPINS. > Deliberate spinning is prohibited because the spin tends to flatten out > after two or three turns. When this occurs, the control column is forced > back and engine power must be used to help get the control column > forward. Before flattening out, normal recovery may be made without > power. Recovery is made' by applying full opposite rudder and easing the > control column forward. > > If you don't already have it, I will send it to you. > > Greetings > > Detlef Detlef, Many thanks, and again, i hope you did not loose to much time, you started to work on your model. On my side as i said before, that model was ready some years ago (i just included some instruments taken from others recent existing aircraft, theses instrument must be improved) My target was to make a variant, in order to answer an old wish =>to make the St Exupery Aircraft which was the last he had flown, he never came back from mission: here a link http://www.flyandrive.com/cadresaintex02.htm and that other link (sorry in French only) http://aeroclubstdizier.free.fr/historique_st_ex.htm today we know i was shot over Marseille. here the link http://www.aero-relic.org/English/F-5B_42-68223_St_Exupery/e-00-stexuperyf5b.htm I will make that P38 "F-5B" variant (with a pilot who could look like St EX face :) ) I mainly work with the documents, that i have are from paper ( old history books aircraft, and specialized magazines, more than 50 years collection :) ). I could read that P38 was very difficult to fly, and the victories, when fighting ,where due to the main quality high climb speed and altitude capability. The low speed manoeuvrability being very difficult. With Flightgear we can enjoy to gather the history acknowledge and these specific aircrafts which where involved in the History. It would nice to read your manual, so i could learn more on that "wild beast" . On a private mail i will send you my private address mail. Cheers > -- Gérard - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] P-38L-Lightning
On Saturday 30 June 2007 09:11:36 Detlef Faber wrote: > very nice Aircraft indeed Speaking of which, here is a very interesting story: http://news.bbc.co.uk/1/low/scotland/highlands_and_islands/6245802.stm Nick -- Free Software Foundation Associate Member 5508 - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] P-38L-Lightning
Hello Gerard, very nice Aircraft indeed Am Freitag, den 29.06.2007, 23:07 +0200 schrieb gh.robin: > On Fri 29 June 2007 21:55, Martin Spott wrote: > > "gh.robin" wrote: > > > On Fri 29 June 2007 19:02, Martin Spott wrote: > > > > Woohooo, did anyone try putting this baby into a low-speed stall ? > > > > Make sure to gain enough altitude before ! > > > > > > yes it is given to stall at 91 kt, the model with that "crude" FDM > > > [...] > > > > I didn't intend to blame the FDM for doing wrong, I was just a bit > > surprised how this beast behaves at stall and how difficult stall > > recovery might become It would be nice to know if this is > > actually similar to the 'real' one, > > > > Martin. > > Diff icult to answer, just this, which has been written : > > =>About the only significant short coming of the Lightning was spin/.stall > recovery, which could be a bear, especially at low altitude. That's is why > this film cautions strongly against entering a spin below 10,000'<= > > the manual states: As stalling speed is approached, the center section stalls first with noticeable shaking of the airplane, however, the ailerons remain effective. In either "power-on" or "power-off" stalls with flaps and landing gear up, the airplane "mushes" straight forward in a well-controlled stall. With flaps and landing gear down, there appears to be a slight tendency for one wing to drop. There is, however, no tendency to spin. Under these conditions, the nose drops slightly and, as the speed increases, the wing will come up. SPINS. Deliberate spinning is prohibited because the spin tends to flatten out after two or three turns. When this occurs, the control column is forced back and engine power must be used to help get the control column forward. Before flattening out, normal recovery may be made without power. Recovery is made' by applying full opposite rudder and easing the control column forward. If you don't already have it, I will send it to you. Greetings Detlef > you can read that here. > http://zenoswarbirdvideos.com/P38.html?gclid=CM3ixPSXgo0CFQNNZwodE3aoPA > > In addition to when i tried to tune the FDM i was surprised by that high > value > wing loading: 53 lb/sq-ft given with an average weight loaded 17500 lbs > (empty weight 12500 lbs). > > > cheers - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] P-38L-Lightning
On Fri 29 June 2007 21:55, Martin Spott wrote: > "gh.robin" wrote: > > On Fri 29 June 2007 19:02, Martin Spott wrote: > > > Woohooo, did anyone try putting this baby into a low-speed stall ? > > > Make sure to gain enough altitude before ! > > > > yes it is given to stall at 91 kt, the model with that "crude" FDM > > [...] > > I didn't intend to blame the FDM for doing wrong, I was just a bit > surprised how this beast behaves at stall and how difficult stall > recovery might become It would be nice to know if this is > actually similar to the 'real' one, > > Martin. Difficult to answer, just this, which has been written : =>About the only significant short coming of the Lightning was spin/.stall recovery, which could be a bear, especially at low altitude. That's is why this film cautions strongly against entering a spin below 10,000'<= you can read that here. http://zenoswarbirdvideos.com/P38.html?gclid=CM3ixPSXgo0CFQNNZwodE3aoPA In addition to when i tried to tune the FDM i was surprised by that high value wing loading: 53 lb/sq-ft given with an average weight loaded 17500 lbs (empty weight 12500 lbs). cheers -- Gérard - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] P-38L-Lightning
"gh.robin" wrote: > On Fri 29 June 2007 19:02, Martin Spott wrote: > > Woohooo, did anyone try putting this baby into a low-speed stall ? > > Make sure to gain enough altitude before ! > yes it is given to stall at 91 kt, the model with that "crude" FDM > [...] I didn't intend to blame the FDM for doing wrong, I was just a bit surprised how this beast behaves at stall and how difficult stall recovery might become It would be nice to know if this is actually similar to the 'real' one, Martin. -- Unix _IS_ user friendly - it's just selective about who its friends are ! -- - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] P-38L-Lightning
On Fri 29 June 2007 19:02, Martin Spott wrote: > "gh.robin" wrote: > > Here is available the GPL version of P-38L Lightning. > > Woohooo, did anyone try putting this baby into a low-speed stall ? > Make sure to gain enough altitude before ! > > Martin. yes it is given to stall at 91 kt, the model with that "crude" FDM gives 100 kt , so beware the crash :). Regards -- Gérard - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] P-38L-Lightning
On Fri 29 June 2007 19:02, Martin Spott wrote: > "gh.robin" wrote: > > Here is available the GPL version of P-38L Lightning. > > Woohooo, did anyone try putting this baby into a low-speed stall ? > Make sure to gain enough altitude before ! > > Martin. yes it is given to stall at 91 kt, the model with that "crude" FDM gives 100 kt , so beware the crash :). Regards -- Gérard - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
[Flightgear-devel] P-38L-Lightning
Hello, Here is available the first official version of P-38L Lightning. It can be found here http://perso.orange.fr/GRTux/P-38-Lightning.tar.gz some snapshots http://perso.orange.fr/GRTux/P-38L-Lightning-Pic1.jpg http://perso.orange.fr/GRTux/P-38L-Lightning-Pic2.jpg Regards -- Gérard - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] P-38L-Lightning
"gh.robin" wrote: > Here is available the GPL version of P-38L Lightning. Woohooo, did anyone try putting this baby into a low-speed stall ? Make sure to gain enough altitude before ! Martin. -- Unix _IS_ user friendly - it's just selective about who its friends are ! -- - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] P-38L-Lightning
"gh.robin" wrote: > Here is available the GPL version of P-38L Lightning. Well done ! Martin. -- Unix _IS_ user friendly - it's just selective about who its friends are ! -- - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
[Flightgear-devel] P-38L-Lightning
Hello, Here is available the GPL version of P-38L Lightning. It can be found here http://perso.orange.fr/GRTux/P-38-Lightning.tar.gz some snapshots http://perso.orange.fr/GRTux/P-38L-Lightning-Pic1.jpg http://perso.orange.fr/GRTux/P-38L-Lightning-Pic2.jpg Regards -- Gérard - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
