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Autothrottle how to... (Read 508 times)

Mar 5^th, 2006 at 7:41pm

StarJourney Offline
Colonel
PBY Driver
San Diego, CA

Gender:
Posts: 30

I'm trying to modify Mike Stone's PBY so that the A/P can use autothrottle. I have an A/P Gauge that has the autothrottle option, but I can't seem to get it to work. I'm using FS Panel Studio and have already checked the "Autothrottle" option, but it still doesn't want to work. Any idea?

Thanks for any help,

Scott Horne

Life, Liberty and the pursuit of those who threaten it. U.S. Navy

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Reply #1 - Mar 6^th, 2006 at 7:24am

dave3cu Offline
Colonel
Procrastinate now, don't
put it off.
3CU, Northern Wisconsin, USA

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Posts: 3077

You'll need to add or change lines in the aircraft.cfg file-[Autopilot] section.

Here is an example from the B737 aircraft.cfg file

[autopilot]
autopilot_available=1
flight_director_available=1
default_vertical_speed=1800
autothrottle_available=1
autothrottle_arming_required=1
autothrottle_max_rpm = 90
autothrottle_takeoff_ga=1
......................

If you need a reference for editing the aircraft.cfg file I'd suggest the MS-AircraftContainerSDK; http://www.microsoft.com/games/flightsimulator/fs2004_downloads_sdk.asp#aircraft...

Dave

At that time [1909] the chief engineer was almost always the chief test pilot as well. That had the fortunate result of eliminating poor engineering early in aviation. Igor Sikorsky

I intend to live forever....so far, so good. Steven Wright

You know....you can just rip up a to-do list.

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Reply #2 - Mar 6^th, 2006 at 3:13pm

jimcooper1 Ex Member

My experience of creating Autothrottles for Prop aircraft has been variable to say the least. Some aircraft models just don't seem to want to settle down to a fixed speed and hunt around the selected IAS causing pitch oscillations as well. Other aircraft seem to accept an autothrottle quite happily. as I don't create aircraft (only gauges and panels) I don't know enough about the mdl file to understand why this is so - one day there might be enough hours in the day to start building aircraft as well!!

If you can't get the autothrottle to work try this frig in the [autopilot] section of the aircraft.cfg file

autothrottle_max_rpm=190.0

Good luck

Jim

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Reply #3 - Mar 14^th, 2006 at 12:23am

StarJourney Offline
Colonel
PBY Driver
San Diego, CA

Gender:
Posts: 30

Well, thanks for the advice. Unfortunately, it seems like the PBY just isn't an autothrottle-type airplane.

Oh well......

Scott Horne

Life, Liberty and the pursuit of those who threaten it. U.S. Navy

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Reply #4 - Mar 14^th, 2006 at 6:43pm

jimcooper1 Ex Member

Scott,

I was curious so I downloaded Mike Stone's PBY and put in an autothrottle. Works like a dream using the Learjet45 AP and these lines in the aircraft.cfg file:

[autopilot]
autopilot_available= 1
flight_director_available= 1
default_vertical_speed= 700.0
autothrottle_available= 1
autothrottle_max_rpm=190
pitch_takeoff_ga= 8.000
max_pitch=10.000000
max_pitch_acceleration=1.000000
max_pitch_velocity_lo_alt=2.000000
max_pitch_velocity_hi_alt=1.500000
max_pitch_velocity_lo_alt_breakpoint=20000.000000
max_pitch_velocity_hi_alt_breakpoint=28000.000000
max_bank=25.000000
max_bank_acceleration=1.800000
max_bank_velocity=3.000000
max_throttle_rate=0.100000
nav_proportional_control=9.000000
nav_integrator_control=0.250000
nav_derivative_control=0.000000
nav_integrator_boundary=2.500000
nav_derivative_boundary=0.000000
gs_proportional_control=9.520000
gs_integrator_control=0.260000
gs_derivative_control=0.000000
gs_integrator_boundary=0.700000
gs_derivative_boundary=0.000000
yaw_damper_gain=0.000000

Try again !! God Luck

Jim

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Reply #5 - Mar 27^th, 2006 at 9:43pm

StarJourney Offline
Colonel
PBY Driver
San Diego, CA

Gender:
Posts: 30

Thanks! I'll try it out tonight and see what happens! Wish me luck! I'm working on / tweaking a modernized instrument panel for Mike Stone's PBY. I've flown 3/4 around the world with the panel I'm using now, but it still needs some tweaks.

Scott

Life, Liberty and the pursuit of those who threaten it. U.S. Navy

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Reply #6 - Apr 2^nd, 2006 at 1:47am

StarJourney Offline
Colonel
PBY Driver
San Diego, CA

Gender:
Posts: 30

Wonderful! Works like a charm! Now to figure out adding reverse thrust!

Scott Horne

Life, Liberty and the pursuit of those who threaten it. U.S. Navy

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Reply #7 - May 14^th, 2006 at 8:26am

rootbeer Offline
Colonel
Fernley, Nevada

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Posts: 852

You guys' ability to do things like that without breaking a sweat leaves me feeling like I'm best suited to sweeping gutters...

emachines T6212; AMD Athlon64 3800+ (2.40 GHz; Venice core); Allied AL-B500E 500W power supply; 2048Mb PC3200 DDR400; Westinghouse LCM-22w2 wide-screen LCD monitor; eVGA e-GeForce 7900 GS KO X16 PCIe video card; Logitech Extreme 3D Pro flight controller;&&Cyber Acoustics CA-4100 4-channel digital sound with 5 speakers; 300 Gb external hard drive in an enclosure; Windows XP Home; 3 Mb/s AT&T/Yahoo! DSL service; Microsoft Intellipoint trackball; Supergate EC-2000 multi-media keyboard. Epson CX-7800 Stylus all-in-one printer. Canon PowerShot S3 IS digital camera with 1 Gb SD card.&&Next thing: A CH Products USB 2.0 Flight Yoke (for enhanced realism).

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