Tailwind Released!

[scotsman]

@Bill
Below are cutouts from the original .cfg
Comparing the bold printed values of W8 and W10, I can see only slight differences in displacement but none in weight and prop. What do I misunderstand here?

W10
[piston_engine]
power_scalar = 1.0 //Piston power scalar
cylinder_displacement= 85.75 //Cubic inches per cylinder
compression_ratio= 7.5 //Compression ratio
number_of_cylinders=6 //Number of cylinders
max_rated_rpm= 2300 //Max rated RPM
max_rated_hp= 65 //Max rated HP
fuel_metering_type= 2 //0=Fuel Injected, 1=Gravity Carburetor, 2=Aerobatic Carburetor
cooling_type= 0 //0=Cooling type Air, 1=Cooling type Liquid
normalized_starter_torque= 0.3 //Starter torque factor
turbocharged= 0 //Is it turbocharged? 0=FALSE, 1=TRUE
max_design_mp= 0 //Max design manifold pressure, (inHg)
min_design_mp= 0 //Min design manifold pressure, (inHg)
critical_altitude= 0 //Altitude to which the turbocharger will provide max design manifold pressure (feet)
emergency_boost_type= 0 //0=None, 1=Water Injection, 2=Methanol/Water injection, 3=War Emergency Power
emergency_boost_mp_offset= 0 //Additional manifold pressure supplied by emergency boost
emergency_boost_gain_offset= 0 //Multiplier on manifold pressure due to emergency boost
fuel_air_auto_mixture= 0 //Automixture available? 0=FALSE, 1=TRUE
auto_ignition= 0 //Auto-Ignition available? 0=FALSE, 1=TRUE
max_rpm_mechanical_efficiency_scalar= 1.0 //Scalar on maximum RPM mechanical efficiency
idle_rpm_mechanical_efficiency_scalar= 1.0 //Scalar on idle RPM mechanical efficiency
max_rpm_friction_scalar= 1.0 //Scalar on maximum RPM friction
idle_rpm_friction_scalar= 1.0 //Scalar on idle RPM friction

[propeller]
thrust_scalar = 0.56 //Propeller thrust scalar
propeller_type= 1 //0=Constant Speed, 1=Fixed Pitch
propeller_diameter= 6.0 //Propeller Diameter, (feet)
propeller_blades= 2 //Number of propeller blades
propeller_moi= 3.78 //Propeller moment of inertia
beta_max= 0 //Maximum blade pitch angle for constant speed prop, (degrees)
beta_min= 0 //Minimum blade pitch angle for constant speed prop, (degrees)
min_gov_rpm= 0 //Miminum governed RPM
prop_tc= 0.1 //Prop time-constant
gear_reduction_ratio= 1.0

[WEIGHT_AND_BALANCE]
max_gross_weight = 1220 // (pounds)
empty_weight = 680

[Reference Speeds]
flaps_up_stall_speed=65.0 //Knots True (KTAS)
full_flaps_stall_speed=49.0 //Knots True (KTAS)
cruise_speed=150.0 //Knots True (KTAS)
max_indicated_speed=190.0

W8
[piston_engine]
power_scalar = 1.0 //Piston power scalar
cylinder_displacement= 73.75 //Cubic inches per cylinder
compression_ratio= 7.5 //Compression ratio
number_of_cylinders=6 //Number of cylinders
max_rated_rpm= 2300 //Max rated RPM
max_rated_hp= 65 //Max rated HP
fuel_metering_type= 2 //0=Fuel Injected, 1=Gravity Carburetor, 2=Aerobatic Carburetor
cooling_type= 0 //0=Cooling type Air, 1=Cooling type Liquid
normalized_starter_torque= 0.3 //Starter torque factor
turbocharged= 0 //Is it turbocharged? 0=FALSE, 1=TRUE
max_design_mp= 0 //Max design manifold pressure, (inHg)
min_design_mp= 0 //Min design manifold pressure, (inHg)
critical_altitude= 0 //Altitude to which the turbocharger will provide max design manifold pressure (feet)
emergency_boost_type= 0 //0=None, 1=Water Injection, 2=Methanol/Water injection, 3=War Emergency Power
emergency_boost_mp_offset= 0 //Additional manifold pressure supplied by emergency boost
emergency_boost_gain_offset= 0 //Multiplier on manifold pressure due to emergency boost
fuel_air_auto_mixture= 0 //Automixture available? 0=FALSE, 1=TRUE
auto_ignition= 0 //Auto-Ignition available? 0=FALSE, 1=TRUE
max_rpm_mechanical_efficiency_scalar= 1.0 //Scalar on maximum RPM mechanical efficiency
idle_rpm_mechanical_efficiency_scalar= 1.0 //Scalar on idle RPM mechanical efficiency
max_rpm_friction_scalar= 1.0 //Scalar on maximum RPM friction
idle_rpm_friction_scalar= 1.0 //Scalar on idle RPM friction

[propeller]
thrust_scalar = 0.53 //Propeller thrust scalar
propeller_type= 1 //0=Constant Speed, 1=Fixed Pitch
propeller_diameter= 6.0 //Propeller Diameter, (feet)
propeller_blades= 2 //Number of propeller blades
propeller_moi= 3.78

[WEIGHT_AND_BALANCE]
max_gross_weight = 1220 // (pounds)
empty_weight = 680 // (pounds)

[Reference Speeds]
flaps_up_stall_speed=65.0 //Knots True (KTAS)
full_flaps_stall_speed=49.0 //Knots True (KTAS)
cruise_speed=150.0 //Knots True (KTAS)
max_indicated_speed=190.0

Mike

 

[bkeske]

This might provide the info you are inquiring about.

http://www.aviationbanter.com/showthread.php?t=446

http://www.matronics.com/archive/archive-get.cgi?Tailwind-Archive.digest.vol-au

As this is a 'home built' you could put the same engine in both, thus you could have a W-8 and W-10 with the same engine specs. Per the links above, the differences were basically in the wings, 'fuselage', etc. although the W-10 was built stronger for a larger displacement engine.

 

[Lionheart]

Hey guys,

Oddly, FS doesnt look at the horse power rating, but instead it looks at the cubic inches setting. You could put in 2,000 HP and it wouldnt change the output.

To change your output performance, basically you would adjust/tune your cubic inches, prop diameter, prop pitch, number of blades, etc, and you would then be changing your overall flight performance. You can also change their power scaler and thrust scaler. Setting your power scaler on the engine to under 1.0 will usually cause the engine to be unstartable.

I did make a mistake on that prop. Should be a 3 blader on the W-10. My oops. I believe I went through 4 or 5 airfile sets, and sometimes several total revisions on 1, such as the last one to get it to where I wanted.

All in all, if you 'backup' your W-8 aircraft config (make a copy), then copy paste the W-10's engine and prop data into the W-8's config, your W-8 should then match the W-10 performance.


I didnt change weights on these either as some W-8's weigh more then W-10's (interior parts, electrical system, addons here and there), while some W-10's are stripped and have super bare interiors, no electrica system (no battery, no alternator, no big radio stack, special light weight approaches to the construction), so that the W-10's could weigh as much as or less then a W-8, so I left them the same. Its a good 'general' weight zone for them, give or take 100 pounds.



Bill

 

[bkeske]

Since it was brought up Bill, how did you derive your engine specs? Were they based on particular engines? Lyco's?

I was trying to figure it out myself (when researching fuel burn rates) and I assumed you came up with something 'generic'. I also assumed both were the same per the horsepower settings above, so I appreciate your clarification. I wasn't aware FS didn't take the HP ratings into account.

 

[Lionheart]

I have quit trying to do airfiles power sections by way of calculations. It is all so unstable that if you go to do a airfile set the 'right' way, it could take you months before its running right. (That is saying that one way is the right way, when in actuality, it is only 'another' way). What I now do with the power sections when creating a new file from a template set, is adjust the power and prop until the proper speeds, accellerations, cruise, and max speed is achieved. That is 'if' cieling is working properly.

Concerning lift, wings area, rudder max deflection, etc, that is as exact as possible, located with Aircraft Container Manger (ACM), a fantastic 'drag and drop' program for setting up the aircraft geometry section of config files.

Then comes the airfiles tuning, which is another stack of sticks, but gets me intriqued the more I learn about them.

Back to your question. No, I didnt use a specific model of engine. Steven Wittman loved Continentals, stating that they 'purr' and that even though they are 8 pounds heavier then Lycomings, that they are worth it. Also, there are so many engines being installed into Tailwinds, usually used, rebuilt engines. There is no 'standard' for a Tailwind.

As a matter of fact, the really big engine they put in the Tailwind is an inverted Buick V8, lolol... Steves own red Wittman was a V-8. Sounds awesome starting up. The movie on him at YouTube in the 'interview' shows it starting up. You have to hear that thing to believe it. And the cowling is almost the same shape. Somehow that thing fits into a nice little area. I dont know how.. (Where is the radiator?)



Bill

 

[bkeske]

Yes, I've read about the V8, albeit it was a small V8; 267 ci.

This is a GM LS1 v8 that is installed in a RV 10. It seems auto engines and experimental aircraft are 'somewhat' common.

I even ran across someone who was installing a Corvair engine into his W-8.

And yea, Wittman seemed to prefer the Continental from what I have read, although many seem to install Lycomings.

Sheesh, I knew absolutely nothing about the Tailwind before you started this project Bill. Now, I have become oddly fascinated with this bird...

 

[Lionheart]

Sheesh, I knew absolutely nothing about the Tailwind before you started this project Bill. Now, I have become oddly fascinated with this bird...

You've been bit by the bug! The next thing you know is you're dreaming about them.

If it gets worse, join up with the Yahoo group 'Tailwind' and become another fellow addict member, (over 900 and growing). They must have 20 emails aday among members, from installing windshields to V8 carburetors of choice.

Thanks for posting that one. I note the radiator on the firewall. Horse before the cart, but it seems to work. I see this one is right side up. And yes, many Tailwinders use Lycomings and some Corvairs.

If you can, get the EAA Sport Aviation issue for April 2009. Thats where I picked up my bug... arrgh.. :isadizzy:

 

[scotsman]

Thanks for this information.
Things became clear now. Let's take a look in my virtual workshop to find a 3 blade prop to continue exploring Oz-land with my new favourite.
(My dream-Tailwind would be the G-ZIPY w8 with green tinted glass canopy, Bill's new leather interior - also green - and instruments/engine from a W10)

Mike

 

[BananaBob]

Thanks for this information.
Things became clear now. Let's take a look in my virtual workshop to find a 3 blade prop to continue exploring Oz-land with my new favourite.
(My dream-Tailwind would be the G-ZIPY w8 with green tinted glass canopy, Bill's new leather interior - also green - and instruments/engine from a W10)

Mike

I can start on it tomorrow if you can wait? :ernae:

 

[scotsman]

Yipeeeeee

You da man Bob.

At a first glimpse, when Bill showed the very first WIP-pics, I considered the Tailwind as ugly. Having it flown now, it became really one of mya favourites. Combined with one of your skins it will simly be great, I think.

Thanks in advance:ernae:
Mike

 

[bushpilot]

WIP shot of my first TW repaint. Hope no one is making this same paint

Real one is sort of a hybrid of W8 and W10, although it is listed in airliners.net as W8, but the paint fits the W10 model much better. And real one has a C-reg, but has US-flag on the side so go figure...

 

[bkeske]

Very nice Bushpilot. Keep us informed when it is done, and where you might post it.

 

[BananaBob]

Nice job BushPilot, like the colors on this one, had it saved in a folder but hadn't thought about doing it, looks great!!

 

[BananaBob]

Yipeeeeee

You da man Bob.

At a first glimpse, when Bill showed the very first WIP-pics, I considered the Tailwind as ugly. Having it flown now, it became really one of mya favourites. Combined with one of your skins it will simly be great, I think.

Thanks in advance:ernae:
Mike

I have been working on it, so it will get done. :ernae:

 

[arrowmaker]

Always look for the ReadMe instructions in repaints.

It is possible to add a repaint without ReadMe's if you know how the Registry Blocks work. You can always copy/paste a Registry Block and change it to work with a new Registry.

Here's a quick glance at a typical Registry block in the Tailwind;


*EDIT: The line '[fltsim.2] below should have 'must be at last number in order: important...

[fltsim.2] <<Must be last number in order; Important
title=Tailwind W8 03 <<< Must be different from rest
sim=Tailwind_W8
model=Skirts <<< This tells which model to use, (this plane has a skirts model).
panel=
sound=
texture=G-BGBD <<< This is the name of the texture folder you're installing
kb_checklists=
kb_reference=
atc_id=G-BGBD <<<New N-Number Registry
ui_manufacturer=Tailwind
ui_type="W8" <<<Model Type
ui_variation="G-BGBD" <<< Give the repaint a name to find it by in FS
prop_anim_ratio=1.03
ui_thumbnailfile=G-BGBD.jpg <<<For seperate JPG's in FSX if not in Texture folder
description="blah blah blah"


And thats how its done. :d

Easy peasy...

Bill

One thing which people may also like to add is a publisher line:

ui_variation="N1006Y"
ui_createdby="Lionheart Creations"
prop_anim_ratio=1.03

I do this for all aircraft cfg. files that don't include it. I just don't like having any aircraft in my hangar with a publisher/creator listed as unknown.

 

[n4gix]

One thing which people may also like to add is a publisher line:

ui_variation="N1006Y"
ui_createdby="Lionheart Creations"
prop_anim_ratio=1.03

I do this for all aircraft cfg. files that don't include it. I just don't like having any aircraft in my hangar with a publisher/creator listed as unknown.

I kept adding these two lines

ui_typerole="Single Engine Prop"
ui_createdby="Lionheart Creations Ltd."

in whenever I'd send in an update of the 2d panels, but it kept getting taken out again... :isadizzy:

 

[bushpilot]

C-FRDF paint is now uploaded to SOH library.

Blue interior and icebox full of Dr Pepper I experimented on doing fur seats, but it didn't look right because of the reflective/shiny nature of the seats.

Pilot seems to be a fan of a certain winged creature

 

[bkeske]

Fantastic, nice job.

 

[bushpilot]

Thanks! Glad you like it.

 

[Wombat_VC]

Just trying out something. Could not resist it. Hope Bill doesn't mind. No idea if a VC version is possible though.