DFaber wrote in Sun Mar 31, 2013 11:55 am:I'm afraid this is a myth.
No Combat pilot over Enemy Territory, in unclear weather or uncertain altitude is going to try fancy Aerobatic manouvers which may lead to loss of control or disintegration of his Aircraft. Lots of WW2 Aircraft Manuals prohibit such manouvers in Combat and the major part of current day Combat Jet Manuals consists of Diagrams to give the Pilot an Idea of how not to leave the envelope and risk an expensive Airplane.
Apart from that, the main advantage of a Fighter Pilot is Altitude and Speed, a situation well within the envelope.
No sane Pilot who is aware how far he has to walk home will intentionally leave the safe margins of his Aircraft.
AndersG wrote in Tue Apr 02, 2013 7:09 pm:Buckaroo wrote in Tue Apr 02, 2013 6:39 pm:I saw it once in a NACA report, but now the danged NASA technical reports server isn't available to the public due to some danged reaction to some danged alleged Chinese espionage so I can't call it up again. @#$%!
Fortunately, the British have a copy of the NACA archive... http://naca.central.cranfield.ac.uk/
Nice work, btw!
Have you checked the propeller/engine <sense> element for setting the direction of the gyroscopic effects? (I think it ought to affect them.)
LesterBoffo wrote in Tue Apr 02, 2013 7:40 pm:I've got the airfoil lift and drag polars from my Eastbourne Monoplane, and Sopwith One and one half-strutter if you wish to give them a try. They're in JSB sim formatting. Can't vouch for their complete historical accuracy, but they were derived from historical airfoil profiles drawn into XFLR5 at what I hope are close Reynolds numbers.
Bomber wrote in Wed Apr 03, 2013 7:21 pm:On my Fokker Dr1 I used a sence of -1...
The engine here also has a clockwise rotation as seen from the pilots seat, resulting in a tight right turn with nose drop....
Flug you might want to have a look at it...
http://target4today.com/_t4t-aircraft_/T4T-Fokker.zip
Simon
flug wrote in Thu Apr 04, 2013 12:17 am:
Those would indeed be very interesting to have a look and perhaps use as a model--if you don't mind sharing.
<function name="aero/force/Lift_alpha">
<description>Lift due to alpha</description>
<product>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<table>
<independentVar lookup="row">aero/alpha-rad</independentVar>
<tableData>
-0.2793 -1.298
-0.1396 -0.5118
-0.1047 -0.3244
-0.0698 -0.1446
-0.0349 0.0581
0.000 0.170
0.01745 0.355
0.03491 0.536
0.0428 0.69
0.0523 0.84
0.06981 0.984
0.1047 1.045
0.1396 1.18
0.1745 1.316
0.1918 1.59
0.2443 1.565
0.2793 1.491
0.3142 1.383
0.3316 1.214
0.3491 1.191
0.3665 1.037
0.3840 0.8031
0.436 0.6785
</tableData>
</table>
</product>
</function>
<function name="aero/coefficient/CD0">
<description>Drag_at_zero_lift</description>
<product>
<property>aero/function/ground-effect-factor-drag</property>
<property>aero/qbar-psf</property>
<property>metrics/Sw-sqft</property>
<table>
<independentVar lookup="row">aero/alpha-rad</independentVar>
<tableData>
-1.5700 1.500
-0.280 0.794
-0.140 0.251
-0.105 0.169
-0.070 0.0441
-0.035 0.018
0.000 0.0078
0.035 0.0114
0.087 0.0384
0.104 0.078
0.157 0.131
0.174 0.196
0.209 0.263
0.244 0.386
0.279 0.599
0.314 0.827
0.332 1.065
0.349 1.3286
0.366 1.3652
0.384 1.4910
0.419 1.494
1.570 1.5000
</tableData>
</table>
</product>
</function>
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