Ed Cesnalis Posted September 19, 2013 Report Share Posted September 19, 2013 Thanks John, I think this graph is wrong. Look at the 5,500RPM line at 0'DA it shows ~72KW or 96.55hp, sounds close at least Now look at the same line at 7,500'DA it shows ~ 28KW or 37.54hp not even close, should be ~72hp. 7,500'DA is peak performance altitude for WOT 5,500 if it was down to 37hp you wouldn't be able to maintain altitude. Link to comment Share on other sites More sharing options...
Tom Baker Posted September 19, 2013 Report Share Posted September 19, 2013 Density altitude on the chart is in meters not feet. Look and see if 2286 gives a number you like. Link to comment Share on other sites More sharing options...
FlyingMonkey Posted September 19, 2013 Report Share Posted September 19, 2013 Why do they even have the graph go to the equivalent of 22,500+ feet? A bit optimistic on their part. Maybe that's the performance if you drop a CT off the wing of a B-52 at that altitude... Link to comment Share on other sites More sharing options...
Ed Cesnalis Posted September 19, 2013 Report Share Posted September 19, 2013 Thank you Tom Link to comment Share on other sites More sharing options...
Tom Baker Posted September 19, 2013 Report Share Posted September 19, 2013 Why do they even have the graph go to the equivalent of 22,500+ feet? A bit optimistic on their part. Maybe that's the performance if you drop a CT off the wing of a B-52 at that altitude... You might be surprised how high a CT could fly if the pilot was on oxygen. A Taylorcraft set an altitude record for small aircraft back in the 40's of 24,311 on just 65hp. Link to comment Share on other sites More sharing options...
Roger Lee Posted September 19, 2013 Author Report Share Posted September 19, 2013 I would bet a CT can get to at least 20K+. I know two that have seen 19K and weren't having any issue. Yes climb is a dog, but it could climb. Proper prop setting would help. Link to comment Share on other sites More sharing options...
FlyingMonkey Posted September 19, 2013 Report Share Posted September 19, 2013 I stand corrected! Link to comment Share on other sites More sharing options...
Ed Cesnalis Posted September 20, 2013 Report Share Posted September 20, 2013 I would bet a CT can get to at least 20K+. I know two that have seen 19K and weren't having any issue. Yes climb is a dog, but it could climb. Proper prop setting would help. Without using a wave condition to contribute to the result I think the actual service ceiling is under 15,000' Link to comment Share on other sites More sharing options...
Roger Lee Posted September 20, 2013 Author Report Share Posted September 20, 2013 Hi Ed, The people who did this are fairly famous and you know of one and he's well published. He also holds the longest time in air without refueling in a CT. 9 hrs without any additional fuel or modifications, the two Swiss had additional fuel. Sorry, no names. Link to comment Share on other sites More sharing options...
Duane Jefts Posted September 20, 2013 Report Share Posted September 20, 2013 The POH says the service ceiling of the CTLS is 12150 feet above which you only have a 100fpm climb capability. the CTLSi supplement says its service ceiling is the same as the CTLS. It also says the max operational altitude is 13780 above which there is no climb capability. So real world, who knows what you can really do. These are only numbers in a book. Conditions make those numbers different in both directions. Link to comment Share on other sites More sharing options...
Roger Lee Posted September 20, 2013 Author Report Share Posted September 20, 2013 Those numbers I'm sure are at max weight, -12 or -6 flaps and the factory prop setting. A little tweaking with the carbs, the prop and very little weight and change the flap setting and you would be surprised. Link to comment Share on other sites More sharing options...
Duane Jefts Posted September 20, 2013 Report Share Posted September 20, 2013 Nothing surprises me when it comes to you and a little tweaking. Remember, I have seen you in action. Small changes yields big results. Link to comment Share on other sites More sharing options...
coppercity Posted September 20, 2013 Report Share Posted September 20, 2013 Been over 15k with my LS with a density altitude of over 17k. She was no rocket ship up there but made it fine. I was alone with half tanks and 20lbs of baggage. Link to comment Share on other sites More sharing options...
CT_MATT Posted September 20, 2013 Report Share Posted September 20, 2013 I personally crossed the Rockies a year ago this past weekend in an LS climbing to 14,000 with no problem. Was still climbing well but, I don't recall the rate at the moment. Strong enough to go higher if we wanted. We were also at ~gross weight. Didn't stay long, just wanted to see if she could do it. Immediately after going over the pass, descended to a safer altitude. Also spent some time at 11k+ on some of the hottest (and humid) days this summer flying to FD in woodstock. I have no doubts that higher is possible. Link to comment Share on other sites More sharing options...
Jim Meade Posted September 20, 2013 Report Share Posted September 20, 2013 Remember the company stats will be on a standard day and with no lift or thermals aiding. Link to comment Share on other sites More sharing options...
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