From: Arnt K. <ar...@c2...> - 2001-07-31 10:56:48
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On Mon, 30 Jul 2001 20:53:54 -0700, Tony Peden <ap...@ea...> wrote in <010...@va...>: > On Monday 30 July 2001 07:00 pm, you wrote: > > > > 3. Create separate JSBSim config files for C172s with weaker and > > stronger engines, i.e. c172-io320.xml and c172-io360.xml (or, by > > horsepower, something like c172-160hp.xml and c172-210hp.xml). > > FWIW, no C172 has ever been certified with anything more than 180HP. > See the TCDS, which you can get to from here: > http://www.faa.gov/avr/air/airhome.htm (pick TCDS from the drop-down list) ..fwiw, a C172, LN-BWQ operated out of Åsegarden airstrip about 2 km from my home in Sollia near Harstad, Norway, in the 70-ies thru 1986 when the airstrip was closed. (8bit "Åsegarden" = ascii "Aasegarden", "Å" = "Aring" = "Awe", you could say Åsome. ;-) ) ..the common understanding here, was it had a constant speed prop on a 210 hp engine. Knowing the Norw. CAA tradition at the time, this _must_ have been certified. However, LN-BWQ and other 210hp C172 may have been built only in Cessna?'s facility at Reims, France, and would then not need _FAA_ certification. LN-BWY, a C152 Aerobat, was built there. ..I believe these C172 built in Reims, were known as C172R's for "Reims-Cessna". Anyone who _knows_? -- ..med vennlig hilsen = with Kind Regards from Arnt... ;-) Scenarios always come in sets of three: best case, worst case, and just in case. |
From: <js...@ha...> - 2001-07-31 14:43:27
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> BTW: The FAA certifies and tracks propellers independently of aircraft, > just like it does engines. These are combined with a certifiable airframe > to create an aircraft that is then covered by a TCDS. Therefore, we could > create prop XML files next to the engine ones to mirror this structure. > I don't believe there is an equivalent concept in the turbofan engines. We do model props separately in JSBSim, in case you had not noticed, yet. This should provide us with some nice flexibility. However, I have had to guesstimate and scale some propo data, as prop manufacturers have been perfectly silent when I have contacted them about what data is available, if any. Nobody has even written back saying: "No, we can't give that out - it's proprietary". Just dead silence. Jon |
From: Gene B. <ge...@de...> - 2001-07-31 15:29:28
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> We do model props separately in JSBSim, in case you had not noticed, yet. This > should provide us with some nice flexibility. However, I have had to > guesstimate and scale some propo data, as prop manufacturers have been > perfectly silent when I have contacted them about what data is available, if > any. Nobody has even written back saying: "No, we can't give that out - it's > proprietary". Just dead silence. > Jon, hop over to:http://www.mccauley.textron.com/home.html and follow the "contact" link they've got a phone number there. Call 'em and ask. I've done this once in the past, but events overtook me and I ended up dropping it. If you keep bugging them, they'll cave and you can get some info out of them. If nothing else, pitch & diameter. :) g. |
From: Alex P. <ale...@ie...> - 2001-08-01 05:11:04
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> > BTW: The FAA certifies and tracks propellers independently of aircraft, > > just like it does engines. These are combined with a certifiable airframe > > to create an aircraft that is then covered by a TCDS. Therefore, we could > > create prop XML files next to the engine ones to mirror this structure. > > I don't believe there is an equivalent concept in the turbofan engines. > > We do model props separately in JSBSim, in case you had not noticed, yet. This > should provide us with some nice flexibility. However, I have had to > guesstimate and scale some propo data, as prop manufacturers have been > perfectly silent when I have contacted them about what data is available, if > any. Nobody has even written back saying: "No, we can't give that out - it's > proprietary". Just dead silence. I've got some technical contacts at a few of the companies. When I have time, I'll try asking nicely for their assistance. |
From: Elad Y. <el...@ee...> - 2001-08-01 05:48:05
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Hi, I was thinking... having cloud textures and cloud layer positions, can one use the cloud texture as a lightmap for the ground textures, resulting a nice effect of a cloud shadowing the ground ? (I understand cloud textures are alpha/grayscale maps...) If someone already brought it up then you may simply ignore this message. All the best, Elady. --------------------- Elad Yarkoni ("Elady" for friends or.... "Oh my god - it's him !" for fans) el...@ee... www.ee.bgu.ac.il/~elady Dept. of ECE, BGU, Beer-Sheva, Israel. 972-8-647-2417 |
From: JD F. <fe...@lo...> - 2001-08-02 04:52:57
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Actually, it's not that bad an idea. Here's another one: The airplane itself casts a shadow in view mode. Just a thought. Elad Yarkoni wrote: > Hi, > > I was thinking... having cloud textures and cloud layer > positions, can one use the cloud texture as a lightmap > for the ground textures, resulting a nice effect of > a cloud shadowing the ground ? > (I understand cloud textures are alpha/grayscale maps...) > > If someone already brought it up then > you may simply ignore this message. > > All the best, > Elady. > > --------------------- > Elad Yarkoni > > ("Elady" for friends or.... > "Oh my god - it's him !" for fans) > > el...@ee... > www.ee.bgu.ac.il/~elady > Dept. of ECE, BGU, Beer-Sheva, Israel. > 972-8-647-2417 > > _______________________________________________ > Flightgear-devel mailing list > Fli...@li... > http://lists.sourceforge.net/lists/listinfo/flightgear-devel |