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Aero: Update CLflap, FMGC: rework alpha prot/max speeds

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This commit is contained in:
Josh Davidson 2022-05-08 16:16:11 -04:00
parent a23bd84908
commit d3a7e4604d
5 changed files with 98 additions and 35 deletions
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8
Systems/a320-aerodynamics.xml
View file

@ -118,10 +118,10 @@
<independentVar lookup="row">fcs/flap-pos-deg</independentVar>
<tableData>
0 0.0000
10 0.1334
15 0.2314
20 0.3044
40 0.3766
10 0.1387
15 0.2377
20 0.3127
40 0.3894
</tableData>
</table>
</product>

6
Systems/a320-cfm56-5b4-engine-fadec.xml
View file

@ -11,6 +11,7 @@
<property value="18.9">fadec/limit/min-n1</property>
<property value="104">fadec/limit/max-n1</property>
<property value="0">fadec/athr/cmd</property>
<property value="0">fadec/inhibit-alpha-floor</property>
<property value="1">fadec/limit/active-epr</property> <!-- Unused in this engine -->
<property value="0">fadec/control-1/n1-mode</property> <!-- Unused in this engine -->
<property value="0">fadec/control-2/n1-mode</property> <!-- Unused in this engine -->
@ -1009,7 +1010,7 @@
<!-- Alpha Floor and Toga Lk -->
<switch name="fadec/alpha-floor-engage">
<default value="14.5"/>
<default value="13"/>
<test logic="OR" value="15">
/controls/flight/flaps-pos eq 1
/controls/flight/flaps-pos eq 2
@ -1024,7 +1025,7 @@
</switch>
<switch name="fadec/alpha-floor-disengage">
<default value="8"/>
<default value="11"/>
<test logic="OR" value="13">
/controls/flight/flaps-pos eq 1
/controls/flight/flaps-pos eq 2
@ -1043,6 +1044,7 @@
<test logic="OR" value="0"> <!-- Reset -->
position/wow eq 1
/it-fbw/law ne 0
fadec/inhibit-alpha-floor eq 1
/FMGC/FCU-working eq 0
position/gear-agl-ft lt 100
</test>

34
Systems/a320-fbw.xml
View file

@ -70,7 +70,7 @@
</test>
</switch>
<fcs_function name="fbw/stall-alpha-deg">
<fcs_function name="fbw/alpha-stall-deg">
<function>
<table>
<independentVar lookup="row">atmosphere/density-altitude</independentVar>
@ -82,13 +82,41 @@
</function>
</fcs_function>
<fcs_function name="fbw/alpha-prot-deg">
<function>
<table>
<independentVar lookup="row">atmosphere/density-altitude</independentVar>
<independentVar lookup="column">fcs/flap-pos-deg</independentVar>
<tableData>
0 15
0 9.5 10.5
43000 6.5 6.8
</tableData>
</table>
</function>
</fcs_function>
<fcs_function name="fbw/alpha-max-deg">
<function>
<table>
<independentVar lookup="row">atmosphere/density-altitude</independentVar>
<independentVar lookup="column">fcs/flap-pos-deg</independentVar>
<tableData>
0 15
0 13.5 14.5
43000 7.5 7.7
</tableData>
</table>
</function>
</fcs_function>
<switch name="fbw/protections/overspeed">
<default value="fbw/protections/overspeed"/>
<test logic="OR" value="0">
position/wow eq 1
/it-fbw/law ne 0
/instrumentation/airspeed-indicator/indicated-speed-kt le /FMGC/internal/vmo-mmo
aero/alpha-deg-damped ge fbw/stall-alpha-deg
aero/alpha-deg-damped ge fbw/alpha-stall-deg
</test>
<test value="1">
/instrumentation/airspeed-indicator/indicated-speed-kt ge /FMGC/internal/vmo-mmo-plus-6
@ -1476,7 +1504,7 @@
<summer name="fbw/pitch/stall-alpha-error">
<input>aero/alpha-deg-fixed</input>
<input>-fbw/stall-alpha-deg</input>
<input>-fbw/alpha-stall-deg</input>
</summer>
<fcs_function name="fbw/pitch/e-i-min">

79
Systems/a320-fmgc.xml
View file

@ -191,32 +191,64 @@
</fcs_function>
<!-- V alpha prot/max -->
<lag_filter name="/FMGC/internal/valphadot-lag">
<input>aero/alphadot-rad_sec</input>
<c1>0.75</c1>
<lag_filter name="/FMGC/internal/valpha-lag">
<input>aero/alpha-deg-fixed</input>
<c1>0.3</c1>
</lag_filter>
<pure_gain name="/FMGC/internal/valphadot-offset">
<input>/FMGC/internal/valphadot-lag</input>
<gain>125</gain>
</pure_gain>
<fcs_function name="/FMGC/internal/valpha-prot">
<fcs_function name="/FMGC/internal/valpha-prot-input">
<function>
<sum>
<product>
<property>/FMGC/internal/vs1g-kts</property>
<value>1.09</value>
</product>
<property>/FMGC/internal/valphadot-offset</property>
</sum>
<sqrt>
<quotient>
<property>/FMGC/internal/valpha-lag</property>
<property>fbw/alpha-prot-deg</property>
</quotient>
</sqrt>
</function>
</fcs_function>
<summer name="/FMGC/internal/valpha-max">
<input>/FMGC/internal/vs1g-kts</input>
<input>/FMGC/internal/valphadot-offset</input>
</summer>
<fcs_function name="/FMGC/internal/valpha-max-input">
<function>
<sqrt>
<quotient>
<property>/FMGC/internal/valpha-lag</property>
<property>fbw/alpha-max-deg</property>
</quotient>
</sqrt>
</function>
</fcs_function>
<fcs_function name="/FMGC/internal/valpha-prot">
<function>
<product>
<property>velocities/vc-kts</property>
<table>
<independentVar lookup="row">/FMGC/internal/valpha-prot-input</independentVar>
<tableData>
0 0.3
1 1.0
2 1.6
</tableData>
</table>
</product>
</function>
</fcs_function>
<fcs_function name="/FMGC/internal/valpha-max">
<function>
<product>
<property>velocities/vc-kts</property>
<table>
<independentVar lookup="row">/FMGC/internal/valpha-max-input</independentVar>
<tableData>
0 0.3
1 1.0
2 1.6
</tableData>
</table>
</product>
</function>
</fcs_function>
<!-- Extra VS1g tables for predictions etc -->
<fcs_function name="/FMGC/internal/vs1g-conf-0">
@ -588,13 +620,10 @@
</switch>
<switch name="/FMGC/internal/vls-factor-cmd">
<default value="1.28"/> <!-- 1.28 VS1g -->
<default value="1.23"/>
<test value="1.13"> <!-- 1.13 VS1g -->
/FMGC/internal/takeoff-latch eq 1
</test>
<test value="1.23"> <!-- 1.23 VS1g -->
fcs/flap-pos-deg ge 0.1
</test>
</switch>
<switch name="/FMGC/internal/vls-factor-rate">
@ -625,7 +654,9 @@
</table>
</sum>
</product>
<!-- Never drop below either of the following -->
<value>113</value>
<property>/FMGC/internal/valpha-prot</property>
</max>
</function>
<clipto>

6
Systems/a320-v2527-a5-engine-fadec.xml
View file

@ -13,6 +13,7 @@
<property value="22.4">fadec/limit/min-n1</property>
<property value="100">fadec/limit/max-n1</property>
<property value="0">fadec/athr/cmd</property>
<property value="0">fadec/inhibit-alpha-floor</property>
<channel name="Thrust Limits">
@ -1468,7 +1469,7 @@
<!-- Alpha Floor and Toga Lk -->
<switch name="fadec/alpha-floor-engage">
<default value="14.5"/>
<default value="13"/>
<test logic="OR" value="15">
/controls/flight/flaps-pos eq 1
/controls/flight/flaps-pos eq 2
@ -1483,7 +1484,7 @@
</switch>
<switch name="fadec/alpha-floor-disengage">
<default value="8"/>
<default value="11"/>
<test logic="OR" value="13">
/controls/flight/flaps-pos eq 1
/controls/flight/flaps-pos eq 2
@ -1502,6 +1503,7 @@
<test logic="OR" value="0"> <!-- Reset -->
position/wow eq 1
/it-fbw/law ne 0
fadec/inhibit-alpha-floor eq 1
/FMGC/FCU-working eq 0
position/gear-agl-ft lt 100
fadec/control-1/n1-mode eq 1