JetStream96 / QSimPlanner

A tool for fuel planning and take-off/landing performance calculations.
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Wrong takeoff performance for A319 #20

Open CHH2000day opened 4 years ago

CHH2000day commented 4 years ago

image The required runway distance doesn't increase as flex temp goes up.Instead,it goes lower for a higher flex temp.

rklomp commented 4 years ago

I assume the tables below might have an error, but I don't have any data to validate it. If you have or can find this data, feel free to check them.

  <!-- 
       From airport planning manual. 
       First row is runway lengths.
       First column is elevation.
       The table is takeoff limit weight. 
  -->
  <Table flaps="1+F" ISA_offset="0">
    4000    5000    6000    7000    8000    9000    10000   11000   12000   13000
    0   125 148 157 164 170 174 175 176 177 178
    2000    115 142 152 158 164 169 172 173 174 175
    4000    110 137 146 153 159 163 166 167 168 169
    6000    95  132 142 147 153 158 161 162 163 164
    8000    95  126 135 142 147 151 154 156 157 158
  </Table>

  <!-- If ISA_offset is "15", it means this table is for temperature at ISA+15°C. -->
  <Table flaps="1+F" ISA_offset="15">
    4000    4600    5000    6000    7000    8000    9000    10000   11000   12000   13000
    0   125 147 152 160 165 170 173 175 176 177 178
    2000    117 143 148 155 160 165 169 171 172 173 174
    4000    110 140 144 151 156 161 164 167 168 169 169.5
    6000    100 135 139 147 152 156 160 162 163 164 165
    8000    100 130 133 142 148 152 155 158 159 159.5   160
  </Table>

https://github.com/JetStream96/QSimPlanner/blob/develop/src/QSP/PerformanceData/TO/Default/a319_100_CFM56_TO.xml

JetStream96 commented 4 years ago

@rklomp Looks like the error is indeed in that xml file. Thanks for localizing the issue. I'll take a look soon.