Aerosoft Aerosoft Team [Inactive Account] 51558 Posted December 18, 2009 Aerosoft Share Posted December 18, 2009 I seriously like all real airline pilots to stay out of this one. It's very very warm, 54 degrees. Why are nearly all airliners unable to take-off? The airport is at sea level, density altitude is near the limit but still acceptable. Link to comment Share on other sites More sharing options...
Alexander Wurz 42 Posted December 18, 2009 Share Posted December 18, 2009 Just a guess, but I would assume that the air is too thin for engines to produce enogh thrust? Something simmilar to the physics behind Flex temperature? Link to comment Share on other sites More sharing options...
Just Fly 56 Posted December 18, 2009 Share Posted December 18, 2009 Because the higher the temperature is, the more an aircraft needs distance for take off (I suppose the airline company won't send an empty aircraft anywhere)? Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted December 18, 2009 Author Aerosoft Share Posted December 18, 2009 Just a guess, but I would assume that the air is too thin for engines to produce enogh thrust? Something simmilar to the physics behind Flex temperature? No that's density altitude. Though near the limit that's still ok (the airport is at sealevel)) Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted December 18, 2009 Author Aerosoft Share Posted December 18, 2009 Because the higher the temperature is, the more an aircraft needs distance for take off (I suppose the airline company won't send an empty aircraft anywhere)? repeat.. lol... No that's density altitude. Though near the limit that's still ok (the airport is at sealevel)) Link to comment Share on other sites More sharing options...
Delta777 272 Posted December 18, 2009 Share Posted December 18, 2009 I guess that increasing temperature also increases the humidity which leads to less lift to make the plane take off. EDIT: Oh I see thats not the solution. Tokk me too long to answer. Link to comment Share on other sites More sharing options...
Just Fly 56 Posted December 18, 2009 Share Posted December 18, 2009 Because the ventilation system will use too much energy? Link to comment Share on other sites More sharing options...
Just Fly 56 Posted December 18, 2009 Share Posted December 18, 2009 Or maybe problems with the expansion of some parts of the plane (such as tubes, metal decking plates, ...)? Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted December 18, 2009 Author Aerosoft Share Posted December 18, 2009 Because the ventilation system will use too much energy? No, it could be the APU might be in some trouble, but either on ground power or with one engine started the PACs will be able to handle it. Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted December 18, 2009 Author Aerosoft Share Posted December 18, 2009 Or maybe problems with the expansion of some parts of the plane (such as tubes, metal decking plates, ...)? Nope... aircraft are all build to handle this Link to comment Share on other sites More sharing options...
Albrecht 9 Posted December 18, 2009 Share Posted December 18, 2009 Because the tires are melting on the hot asphalt or glue on.. Albrecht Link to comment Share on other sites More sharing options...
Robert S 75 Posted December 18, 2009 Share Posted December 18, 2009 Because you would be unable to pressurize the cabin? (This is a total guess from left field!) Link to comment Share on other sites More sharing options...
Alexander Wurz 42 Posted December 18, 2009 Share Posted December 18, 2009 Hm then another guess: Because of the high temperature, the Brake's of an airliner could not cool down enough to be within the limits before a takeoff? Link to comment Share on other sites More sharing options...
limacharlie5500 20 Posted December 18, 2009 Share Posted December 18, 2009 Because no human being will go out to fly at temperatures of 54°C? Link to comment Share on other sites More sharing options...
RichardH 0 Posted December 18, 2009 Share Posted December 18, 2009 It's not anything to do with the fuel is it, at around 54 degrees the kerosene will start to vaporise, which could be very dangerous. Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted December 18, 2009 Author Aerosoft Share Posted December 18, 2009 BTW, it seems a lot of users are a bit confused about density altitude (the altitude the aircraft THINKS it is at). Now using our great little tool Aerosoft Flight Calculator you will be able to calculate the density altitude. Entering 54 degrees C and 0 feet altitude you will see that the aircraft thinks it is taking off from an airport not at sea level but at 4200 feet. Rather high, but still very much possible. Wait let me reduce the price of the Aerosoft Flight Calculator from 10.80 Euro (plus VAT where needed) to 6 Euro ($10) as a special bonus until somewhere tomorrow! Link to comment Share on other sites More sharing options...
Bombayduck 7 Posted December 18, 2009 Share Posted December 18, 2009 Airspeed and altitude is indicated by air pressure flowing against the pitot tubes. At a high temperature like this one, the pressure will rise and so, this will lead to wrong information for the pilots. Link to comment Share on other sites More sharing options...
Delta777 272 Posted December 18, 2009 Share Posted December 18, 2009 Why are nearly all airliners unable to take-off? Well it looks like that some airlines are able to take off so I think it has something to do with the equippment. Maybe the lack of correct aircraft performance charts for temperatures like that? Link to comment Share on other sites More sharing options...
Pi@no 17 Posted December 18, 2009 Share Posted December 18, 2009 Is the answer serious or like the other with landing gear ? Link to comment Share on other sites More sharing options...
Bombayduck 7 Posted December 18, 2009 Share Posted December 18, 2009 Or, because of the high temperatures on the runway, the runway will expand, creating all hils and cracks, and so not a flat surface... just a guess:P Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted December 18, 2009 Author Aerosoft Share Posted December 18, 2009 Because the tires are melting on the hot asphalt or glue on.. Albrecht not what I am aiming at... but it could be an issue Link to comment Share on other sites More sharing options...
flyhigh 0 Posted December 18, 2009 Share Posted December 18, 2009 Hi, we don't know the lenght of the runway. So my guess is that the runway is too short. Rgds, flyhigh Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted December 18, 2009 Author Aerosoft Share Posted December 18, 2009 Airspeed and altitude is indicated by air pressure flowing against the pitot tubes. At a high temperature like this one, the pressure will rise and so, this will lead to wrong information for the pilots. That would make flight more or less impossible in any weather, lol. Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted December 18, 2009 Author Aerosoft Share Posted December 18, 2009 Hi, we don't know the lenght of the runway. So my guess is that the runway is too short. Rgds, flyhigh No that would be related to density altitude. Runway is more then long enough. Link to comment Share on other sites More sharing options...
Just Fly 56 Posted December 18, 2009 Share Posted December 18, 2009 Problems with tires pressure? Link to comment Share on other sites More sharing options...
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