Throttle sweet spot for cruising

Its probably mentioned somewhere else but I find that setting throttle to a specific power setting can actually reverse yaw direction or even neutralise it altogether without touching pedals leaving only stick pressure to attend controls for them long flights. Maybe I am wrong but just saying.

 

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Have checked for doubled axis?

 

S!

yes. I clear category in all and axis settings with updates. Its probably a CH rudder thing (might go with MFG xwind). Its not bad just not cut out for the 109 without hurting my feet..

 

 

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I believe the 109 used an actual airfoil as the vertical stabilizer. Below a certain speed, the engine should pull your plane left, above it, the tail should start overcompensating in neutral rudder position and actually push your nose right.

 

IIRC the sweet-spot where both forces canceled each other out was around 500 kph indicated, but I'd have to test fly the plane to make sure.

I believe the 109 used an actual airfoil as the vertical stabilizer. Below a certain speed, the engine should pull your plane left, above it, the tail should start overcompensating in neutral rudder position and actually push your nose right.

 

Interesting trivia: The Spanish built a copy of the Bf-109G with a Hispano Suiza 12Z engine in place of the original DB-605 (as no DB engines could be obtained). Unfortunately the Hispano Suiza's propeller rotates the opposite direction to that of the DB-605 and the Spanish neglected to change the airfoil of the 109's tail, resulting in a plane with totally unmanageable yaw on takeoff. I can't imagine that it was much easier once you were flying at speed either- the pilots must have developed a very strong left leg.

(as no DB engines could be obtained)

Not at all, they intended from start to use the Hispano Suiza engine :smilewink:. Airframes also were delivered without tail fins as they must redesign them from scratch, original ones would had been worthless. HS engine just didn't achieve the intended results so finally, almost ten years later, they had an opportunity to get some Merlin engines (initially intended only for Spanish built Heinkel) and so used them.

 

 

S!

Edited November 22, 2016 by Ala13_ManOWar

hang on, 109s used 51s engine? how is it possible?

 

 

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hang on, 109s used 51s engine? how is it possible?

 

 

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The Spanish made 109's.

Take a look at the Bouchon on the VEAO development list. These are Spanish 109s, and there are still a few flying today I believe. They certainly starrred in the 1970s film "The Battle of Britain"

 

https://en.wikipedia.org/wiki/Hispano_Aviaci%C3%B3n_HA-1112

the michael caine one?

 

 

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Yep, that's the one. Take a close look at the exhausts on the 109s and you'll see they're not where they should be. They exit higher up on the cowls. The He-111s were also ex-Spanish air force too.

He doesn't have to look at exhaust, the whole effin' nose of the plane looks so wrong and out of place, that one can recognize Spanish built 109s from miles away :D

Its probably mentioned somewhere else but I find that setting throttle to a specific power setting can actually reverse yaw direction or even neutralise it altogether without touching pedals leaving only stick pressure to attend controls for them long flights. Maybe I am wrong but just saying.

 

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I believe that it was 1.2 ata? Works for me.

Throttle sweet spot for cruising

 

it differs but I meant in principle thats why I mean "throttle" not "ata". Like you slowly retard to get needle on opposite side then increase slowly till its on the ball in the middle.

 

also, economy setting 1.05/2000 is better to save fuel. Its really dynamic but I hope somebody gets charts from model.

 

 

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Edited November 22, 2016 by WildBillKelsoe

another solution for non combat ferry flights imho is to use the trim special tabs extreme to get one leg in offsetting instead of two. I think I need to invest in mfg xwind. this in no way tarnishes CH but I like coordinated flying and keeping ball centered as it has many benefits compared to yawy or slipping flight.

 

 

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it differs but I meant in principle thats why I mean "throttle" not "ata". Like you slowly retard to get needle on opposite side then increase slowly till its on the ball in the middle.

 

also, economy setting 1.05/2000 is better to save fuel. Its really dynamic but I hope somebody gets charts from model.

 

 

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You'll find charts on Kurfurst's page, I believe : http://www.kurfurst.org/#engines

 

Economy settings are actually 1.15ata for 2000rpm, normal cruise 1.35ata at 2400rpm, combat & climbing 1.45 ata at 2600rpm and emergency is 1.8ata at 2800rpm with mw50

 

EDIT : actual chart : http://www.kurfurst.org/Engine/DB60x/DB605_datasheets_DB.html , at bottom

Edited November 23, 2016 by Whisper

Thanks whisper.

 

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