chi ha voglia di spiegarmi come calcolo il valore SEL ?
Questo l'ho trovato nel tutorial, ma non dice da dove l'ha preso il valore "40"
• Type 40 into the scratchpad and line select it into LSK 1L to enter an additional assumed temperature of 40C on top of the fixed derate.
Assumed temperature is a more complicated concept than the fixed derate, but the basic idea is as follows:
The engines are designed to produce their rated thrust at an actual outside air temperature of 30C (ISA + 15C). If the temperature is higher than this, the air becomes less dense and the engine produces less thrust at the same N1 setting. When we enter an assumed temperature that is higher than the actual outside air temperature, we’re telling the engine computers to act as if the air is less dense than it really is and it will reduce the N1 limit to produce somewhere around the level of thrust that it would if the temperature was actually the higher value.
Questo l'ho trovato nel tutorial, ma non dice da dove l'ha preso il valore "40"
• Type 40 into the scratchpad and line select it into LSK 1L to enter an additional assumed temperature of 40C on top of the fixed derate.
Assumed temperature is a more complicated concept than the fixed derate, but the basic idea is as follows:
The engines are designed to produce their rated thrust at an actual outside air temperature of 30C (ISA + 15C). If the temperature is higher than this, the air becomes less dense and the engine produces less thrust at the same N1 setting. When we enter an assumed temperature that is higher than the actual outside air temperature, we’re telling the engine computers to act as if the air is less dense than it really is and it will reduce the N1 limit to produce somewhere around the level of thrust that it would if the temperature was actually the higher value.
