Free Flight, Free Speech

I'm pleased with the progress. Stalls are lethal and it blows over on the ground in a moderate crosswind but it flies reasonably for the time being. I've been focussing on prop/engine performance and drag really. What I find remarkable is that, with the JavaProp-modelled Sensenich prop and the exact...

I have just committed v.026.0, which includes a major rework of my FDM. It's regenerated using Aeromatic++ 3.3.8, with the propellers modelled using JavaProp, CoG and AeroRP tweaked, and drag and engine parameters adjusted to the performance figures quoted here: https://www.flightglobal.com/FlightPD...

But you aren't coordinating it. You're just dividing your input in half. Correct. Hence "auto" coordination. It's a compromise for pilots using the keyboard, mouse or joysticks with jittery twist axes. Not ideal but better than no coordination at all. I haven't seen an autopilot that impl...

There's a difference?

It turns auto-coordination on when the rudder is not being deflected by the stick and vice versa. This means he can use auto-coordination most of the time, but override it and control the rudder manually for takeoff and landing.

ALS lights are really simple to do. http://wiki.flightgear.org/ALS_technical_notes#ALS_secondary_lights You might want to combine these with procedural lights: http://wiki.flightgear.org/ALS_technical_notes#ALS_procedural_lights What's the difference? The first produces the cast of light on the grou...

@IAHM-COL: When I've finished tuning, I was hoping you'd test the 11,700ft service ceiling by taking it to Innsbruck.

Getting out would probably be more interesting than getting in.

I found some useful performance data: https://www.flightglobal.com/FlightPDFArchive/1968/1968%20-%200659.PDF I've summarised these in a spreadsheet and calculated expected KIAS and fuel flow in usg/h: Beagle Pup Performance These numbers broadly match the figures in here: Beagle News, Volume 8

2400 static RPM, thrust at 55 m/s = 1105N (248lb). I'm using MH126/MH112/MH114/MH120 airfoils. <propeller name="McCauley_1A105-SCM-7053"> <ixx unit="SLUG*FT2">1.716</ixx> <constspeed>0</constspeed> <diameter unit="IN">70.0</diameter> <numblades>2</numblades> <gearratio>...

I think 17.8 is correct: For reference: http://www.sensenich.com/files/documents/Miscellaneous_Documents_Calculating_Pitch_1297966148.pdf: Geometric Pitch (inches) = π (.75) D tan β D is the diameter in inches, β is the blade angle, at the 75% blade radius station, measured from the plane of rotatio...