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#131
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More_Flaps wrote:
On Aug 10, 5:17 am, Bertie the Bunyip wrote: Before them, not much about flight was known at all. There was a lot of supposition and they found that the info available at the time was completely wrong, which is why they started form scratch with a wind tunnel. The accomplishments encommpassed in that first airplane are simply astounding. Not to mention what they learned about control. Between the kite experiments and the early gliders they had learned a lot about controlling their machines. I think there were two main issues. Model planes had already been built and flown but real flight needed control as you said plus enough lift. It was their systematic experimenting ht gave them success rather than genius I think. I'd certainly call their accomplishment the result of genius, considering that in the century that followed the contributions of thousands of brilliant aeronautical engineers were comparatively minor tweaks of the Wrights' systematic experiments. Neil |
#132
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On Aug 11, 6:30*am, Clark wrote:
More_Flaps wrote in news:0344026b-cf53-4b18-92dd- : On Aug 9, 3:47*pm, Clark wrote: More_Flaps wrote in news:4638dcb3-05ba-4e44-97f1- : On Aug 9, 9:51*am, Clark wrote: More_Flaps wrote in news:ae58b49a-6d9c-4b51- 957a - : On Aug 9, 12:06*am, Clark wrote: I've pointed out that carb ice is one of the least likely causes an d I've explaied why that is by noting the temperature and expected throttl e setting. I have never said that carb ice is impossible. Maybe the g uy idl ed for a loooong time and failed to check carb heat on run-up. Maybe h e fail ed to verify max rpm on the run-up and/or take-off roll. It is possibl e that he had carb ice but at 92 degrees and less than 50% humidity and a hot engine it is just not a likely cause. I notice you did not answer my altitude question. I'm honored that y ou agree that carb ice cannot be ruled out simply by high ambient _ground_ temperature. Now what else might be an explanation for powe r steadily dropping? Cheers. Bull**** on not answering the altitude question. Read the NTSB report (th at you snipped) for yourself. The altitude is quite clear for anyone who can comprehend what they read. I see no statement of altitude. Are you on drugs? Cheers What part of departure do you not understand? Maybe you should get an adu lt to read the NTSB report to you and explain the meaning of each sentence. No, cancel that. Not maybe, make it for-sure that you get help with understanding the report. Do you know the altitude? It's not contained in the word departure is it? Cheers Look up the airport elevation yerself. Departure would be climbing out in other words within a thousand feet or so of the airport since you don't seem to understand the term. Nope. Departure is the phase before enroute. It is NOT within 1000' of the airport. How about you take some classes? Cheers |
#133
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On Aug 10, 3:35*pm, More_Flaps wrote:
On Aug 11, 6:30*am, Clark wrote: More_Flaps wrote in news:0344026b-cf53-4b18-92dd- : On Aug 9, 3:47*pm, Clark wrote: More_Flaps wrote in news:4638dcb3-05ba-4e44-97f1- : On Aug 9, 9:51*am, Clark wrote: More_Flaps wrote in news:ae58b49a-6d9c-4b51- 957a - : On Aug 9, 12:06*am, Clark wrote: I've pointed out that carb ice is one of the least likely causes an d I've explaied why that is by noting the temperature and expected throttl e setting. I have never said that carb ice is impossible. Maybe the g uy idl ed for a loooong time and failed to check carb heat on run-up. Maybe h e fail ed to verify max rpm on the run-up and/or take-off roll. It is possibl e that he had carb ice but at 92 degrees and less than 50% humidity and a hot engine it is just not a likely cause. I notice you did not answer my altitude question. I'm honored that y ou agree that carb ice cannot be ruled out simply by high ambient _ground_ temperature. Now what else might be an explanation for powe r steadily dropping? Cheers. Bull**** on not answering the altitude question. Read the NTSB report (th at you snipped) for yourself. The altitude is quite clear for anyone who can comprehend what they read. I see no statement of altitude. Are you on drugs? Cheers What part of departure do you not understand? Maybe you should get an adu lt to read the NTSB report to you and explain the meaning of each sentence. No, cancel that. Not maybe, make it for-sure that you get help with understanding the report. Do you know the altitude? It's not contained in the word departure is it? Cheers Look up the airport elevation yerself. Departure would be climbing out in other words within a thousand feet or so of the airport since you don't seem to understand the term. Nope. Departure is the phase before enroute. It is NOT within 1000' of the airport. How about you take some classes? Cheers It would appear from the newspaper report associated with this accident that it happened on the grounds of the airport. It's unlikely the airplane was very high. |
#134
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On Aug 6, 7:36 pm, Clark wrote:
Well, gee, the density altitude was mentioned to be 3500 feet at an airport only a couple hundred feet above sea level. It was Texas in the summer time. I'm willing to bet the temperature was a heck-of-a-lot closer to 100 than it was to 40 or 50 or even 60 where we really might expect carb icing. The guy should have been at max power which is the least likely time to see carb ice form. If he did the run-up correctly then carb ice was not a likely problem since it would have been detected during the full power turn-up. As a final note, yes, carb ice might form at 100 F but it most likely won't form at max power at 100 F. There have been accidents caused by carb ice that formed after the runup while taxiing to the takeoff runway. The airplane can get airborne but has trouble climbing, and the ice that formed before takeoff is not only reducing the power but causing a larger pressure drop in the carb, creating the conditions that cause more ice to form. I fly a Continental, and I often have to use carb heat right up until I open the throttle for takeoff. And I don't even live in a particularly wet climate. If you search AOPA's accident database for "Carburetor Icing" you'll find hundredsdozens of cases where the only plausible explanation was carb ice. The atmospheric conditions were ripe for it, the situation allowed it, and the pilot, in many cases, didn't know enough about it. I work in the flight training environment and know first-hand about carb ice and how few people understand it or care to understand it, and how some people just will not believe that it can happen at full power on a warm day. People like you. Sooner or later they get a wake-up, and they either handle it right or they have an accident. I lost a flying friend that way, and too often we hear of more carb ice accidents. Folks older and wiser than you did a lot of research and experimenting and came up with those icing charts, charts that have a section that says "serious icing at ANY power setting." Pay attention. Dan |
#135
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Clark wrote:
Now on to the meat of it. Look at those charts again and note that the serious icing risk sections aren't near 100 F. Well ... based on historical conditions reported at FTW (Fort Worth, about 90-100 miles away) at noon of that day (15 minutes prior to the accident), I believe the temperature appears to have been closer to ~90 F (32 C) at the time of the accident. Dewpoint appears to have been somewhere in the neighborhood of ~67 F (19 C). So somewhere around ~48% humidity. I'm using this chart for reference for when carb icing takes place: http://ibis.experimentals.de/images/...omcaassl14.gif Drawing a vertical line from the 32 C point up to where it intersects a horizontal line at 19 C results in a point just inside the orange area that marks "Serious icing - descent power". Getting back to the post that started this thread: there are many possible causes for the accident, but not having a private pilot license was, IMHO, probably not causal for this particular accident. (If the pilot never learned about carb ice and the need to add carb heat in warm humid conditions and icing did happen, then not having a license I suppose could be considered causal.) All that said, I'd be interested in knowing what other possible causes you have in mind that happen often enough to exhibit the reported problems that you consider them more probable than carb icing. I would find it instructive. |
#136
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On Aug 11, 8:48*am, Clark wrote:
More_Flaps wrote in news:7de3c2a7-0640-4079-ba38- : On Aug 11, 6:30*am, Clark wrote: More_Flaps wrote in news:0344026b-cf53-4b18-92dd- : On Aug 9, 3:47*pm, Clark wrote: More_Flaps wrote in news:4638dcb3-05ba-4e44- 97f1 - : On Aug 9, 9:51*am, Clark wrote: More_Flaps wrote in news:ae58b49a-6d9c-4b51- 957a - : On Aug 9, 12:06*am, Clark wrote: I've pointed out that carb ice is one of the least likely causes an d I've explaied why that is by noting the temperature and expected throttl e setting. I have never said that carb ice is impossible. Maybe th e g uy idl ed for a loooong time and failed to check carb heat on run-up. Mayb e h e fail ed to verify max rpm on the run-up and/or take-off roll. It is possibl e that he had carb ice but at 92 degrees and less than 50% humidity and *a hot engine it is just not a likely cause. I notice you did not answer my altitude question. I'm honored tha t y ou agree that carb ice cannot be ruled out simply by high ambient _ground_ temperature. Now what else might be an explanation for powe r steadily dropping? Cheers. Bull**** on not answering the altitude question. Read the NTSB repo rt (th at you snipped) for yourself. The altitude is quite clear for anyone w ho can comprehend what they read. I see no statement of altitude. Are you on drugs? Cheers What part of departure do you not understand? Maybe you should get an adu lt to read the NTSB report to you and explain the meaning of each sentenc e. No, cancel that. Not maybe, make it for-sure that you get help with understanding the report. Do you know the altitude? It's not contained in the word departure is it? Cheers Look up the airport elevation yerself. Departure would be climbing out in other words within a thousand feet or so of the airport since you don't seem to understand the term. Nope. Departure is the phase before enroute. It is NOT within 1000' of the airport. How about you take some classes? Hey, everywhere around here has a pattern altitude of about a thousand feet. If you're beyond that then you've departed the airspace. QED Nope, airspace is not determined just by vertical extent and certainly not by the extent of the "pattern". I guess thart makes you bombastically wrong AGAIN. Here's a simple test for you, what is the horizontal validity of a METAR? Hint: It's not 1000'... Cheers |
#137
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On Aug 11, 8:07*am, wrote:
On Aug 10, 3:35*pm, More_Flaps wrote: On Aug 11, 6:30*am, Clark wrote: More_Flaps wrote in news:0344026b-cf53-4b18-92dd- : On Aug 9, 3:47*pm, Clark wrote: More_Flaps wrote in news:4638dcb3-05ba-4e44-97f1- : On Aug 9, 9:51*am, Clark wrote: More_Flaps wrote in news:ae58b49a-6d9c-4b51- 957a - : On Aug 9, 12:06*am, Clark wrote: I've pointed out that carb ice is one of the least likely causes an d I've explaied why that is by noting the temperature and expected throttl e setting. I have never said that carb ice is impossible. Maybe the g uy idl ed for a loooong time and failed to check carb heat on run-up. Maybe h e fail ed to verify max rpm on the run-up and/or take-off roll. It is possibl e that he had carb ice but at 92 degrees and less than 50% humidity and a hot engine it is just not a likely cause. I notice you did not answer my altitude question. I'm honored that y ou agree that carb ice cannot be ruled out simply by high ambient _ground_ temperature. Now what else might be an explanation for powe r steadily dropping? Cheers. Bull**** on not answering the altitude question. Read the NTSB report (th at you snipped) for yourself. The altitude is quite clear for anyone who can comprehend what they read. I see no statement of altitude. Are you on drugs? Cheers What part of departure do you not understand? Maybe you should get an adu lt to read the NTSB report to you and explain the meaning of each sentence. No, cancel that. Not maybe, make it for-sure that you get help with understanding the report. Do you know the altitude? It's not contained in the word departure is it? Cheers Look up the airport elevation yerself. Departure would be climbing out in other words within a thousand feet or so of the airport since you don't seem to understand the term. Nope. Departure is the phase before enroute. It is NOT within 1000' of the airport. How about you take some classes? Cheers It would appear from the newspaper report associated with this accident that it happened on the grounds of the airport. It's unlikely the airplane was very high. Errr OK if the airport has trees on it's grounds... Never seen that myself but maybe we were too rash at cutting them to make an aerodrome. Cheers |
#138
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On Aug 11, 8:48*am, Clark wrote:
More_Flaps wrote in news:7de3c2a7-0640-4079-ba38- : On Aug 11, 6:30*am, Clark wrote: More_Flaps wrote in news:0344026b-cf53-4b18-92dd- : On Aug 9, 3:47*pm, Clark wrote: More_Flaps wrote in news:4638dcb3-05ba-4e44- 97f1 - : On Aug 9, 9:51*am, Clark wrote: More_Flaps wrote in news:ae58b49a-6d9c-4b51- 957a - : On Aug 9, 12:06*am, Clark wrote: I've pointed out that carb ice is one of the least likely causes an d I've explaied why that is by noting the temperature and expected throttl e setting. I have never said that carb ice is impossible. Maybe th e g uy idl ed for a loooong time and failed to check carb heat on run-up. Mayb e h e fail ed to verify max rpm on the run-up and/or take-off roll. It is possibl e that he had carb ice but at 92 degrees and less than 50% humidity and *a hot engine it is just not a likely cause. I notice you did not answer my altitude question. I'm honored tha t y ou agree that carb ice cannot be ruled out simply by high ambient _ground_ temperature. Now what else might be an explanation for powe r steadily dropping? Cheers. Bull**** on not answering the altitude question. Read the NTSB repo rt (th at you snipped) for yourself. The altitude is quite clear for anyone w ho can comprehend what they read. I see no statement of altitude. Are you on drugs? Cheers What part of departure do you not understand? Maybe you should get an adu lt to read the NTSB report to you and explain the meaning of each sentenc e. No, cancel that. Not maybe, make it for-sure that you get help with understanding the report. Do you know the altitude? It's not contained in the word departure is it? Cheers Look up the airport elevation yerself. Departure would be climbing out in other words within a thousand feet or so of the airport since you don't seem to understand the term. Nope. Departure is the phase before enroute. It is NOT within 1000' of the airport. How about you take some classes? Now to really destroy your altitude question. Do you really expect carb icing to suddenly develop at high altitude while on departure at full throttle or even cruise power??? Prior to this exchange of posts I would have assumed that you do understand that very low manifold pressure is required for there to be any chance of carb ice in Texas in the summer at Skyhawk attainable altitudes. Obviously my assumption was incorrect and clearly you have no grasp the causes of carb icing. Nope I would not, as trained pilot, rule it out without testing for it. Jumping to conclusions without facts can get you killed. You will note that my original observation was a paranthetic question, which you dismissed because it couldn't possibly happen? How do _you_ know that ice build up had not started -was manifold pressure available to the pilot and did he look at it? Cheers |
#139
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On Aug 11, 8:23*am, Clark wrote:
More_Flaps wrote in news:1e21c1be-8850-4f80-91d4- : On Aug 11, 8:48*am, Clark wrote: More_Flaps wrote in news:7de3c2a7-0640-4079-ba38- : On Aug 11, 6:30*am, Clark wrote: More_Flaps wrote in news:0344026b-cf53-4b18- 92dd - : On Aug 9, 3:47*pm, Clark wrote: More_Flaps wrote in news:4638dcb3-05ba-4e44- 97f1 - : On Aug 9, 9:51*am, Clark wrote: More_Flaps wrote in news:ae58b49a-6d9c- 4b5 1- 957a - : On Aug 9, 12:06*am, Clark wrote: I've pointed out that carb ice is one of the least likely causes an d I've explaied why that is by noting the temperature and expected throttl e setting. I have never said that carb ice is impossible. Maybe th e g uy idl ed for a loooong time and failed to check carb heat on run-up.. Mayb e h e fail ed to verify max rpm on the run-up and/or take-off roll. It is possibl e that he had carb ice but at 92 degrees and less than 50% humidity and *a hot engine it is just not a likely cause. I notice you did not answer my altitude question. I'm honored tha t y ou agree that carb ice cannot be ruled out simply by high ambient _ground_ temperature. Now what else might be an explanation fo r powe r steadily dropping? Cheers. Bull**** on not answering the altitude question. Read the NTSB repo rt (th at you snipped) for yourself. The altitude is quite clear for anyon e w ho can comprehend what they read. I see no statement of altitude. Are you on drugs? Cheers What part of departure do you not understand? Maybe you should get an adu lt to read the NTSB report to you and explain the meaning of each sentenc e. No, cancel that. Not maybe, make it for-sure that you get help with understanding the report. Do you know the altitude? It's not contained in the word departure i s it? Cheers Look up the airport elevation yerself. Departure would be climbing out in other words within a thousand feet or so of the airport since you don' t seem to understand the term. Nope. Departure is the phase before enroute. It is NOT within 1000' of the airport. How about you take some classes? Now to really destroy your altitude question. Do you really expect carb icing to suddenly develop at high altitude while on departure at full throttle or even cruise power??? Prior to this exchange of posts I would have assumed that you do understand that very low manifold pressure is required for there to be any chance of carb ice in Texas in the summer at Skyhawk attainable altitudes. Obviously my assumption was incorrect and clearly you have no grasp the causes of carb icing. Nope I would not, as trained pilot, rule it out without testing for it. Jumping to conclusions without facts can get you killed. You will note that my original observation was a paranthetic question, which you dismissed because it couldn't possibly happen? How do _you_ know that ice build up had not started -was manifold pressure available to the pilot and did he look at it? Get real dufuss. I noted that carb icing isn't the most likely cause. Do try to keep up now. -- --- there should be a "sig" here It's been a long long time since I flew a normally carberated airplane, but just had this thought. What would have been the results if in 90 degree temps someone did try to take off with the carb heat full on? Would the loss of power be significant? I'm thinking it's one thing to check for carb ice and carb heat function during run up, but the amount of heat available during full throttle takeoff could be something very different. I know it may have nothing to do with this case, but hope someone can provide an insightful answer anyhow. |
#140
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More_Flaps wrote:
Errr OK if the airport has trees on it's grounds... Never seen that myself but maybe we were too rash at cutting them to make an aerodrome. Cheers Well, feel free to visit KELD. We have so many trees on the airport property that they produce income for the airport. |
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