FL18 - Frontline18 .:. Forum > How to make rotary engine rotate

Clan: No clan
Postings: 411

Hey guys, let's talk 'bout the rotary engines.
__________________

My own weblog

:: 1944 D-Day: Operation Overlord :: Red Orchestra: Ostfront 41-45

Clan: [BAC]
Postings: 1368

What engines?

Clan: Team Frontline18
Postings: 5411

Klick here for the basics of aicraft rotary engines.

Btw. before googeling for rotary engines: In English the Wankel engine is also called a rotary although it has nothing to do with the ones H3nry3 wants to talk about!

[Editiert von Parabellum am 01.Dec.2004 um 13:48]
__________________
Geschichte ist die L�ge, auf die man sich geeinigt hat. (Napol�on Bonaparte)

Clan: No clan
Postings: 411

As I said before, again somewhere in this forum which again, I can't find

.

When I go play BF1918, I see a moving propeller but a non-rotating engine...

What if you make the engine a second propellor?? Then it will rotate

[Editiert von [1st.] H3nry3 am 01.Dec.2004 um 19:32]
__________________

My own weblog

:: 1944 D-Day: Operation Overlord :: Red Orchestra: Ostfront 41-45

Moderator

Clan: Team Battlefield 1918
Postings: 2157

So am I to understand you want to see the rotary engine effect in BF1918 airplanes? Hmmm, never thought about that actually, although your idea of a second propellor might work. This sounds rather interresting...
__________________

Jubilation!
Jubilation2!

Clan: No clan
Postings: 411

Thnx

, but it just kinda' popped out. I saw "von Richthofen's Fliegende Zirkus" en "the Red Baron" this morning.

[Editiert von [1st.] H3nry3 am 01.Dec.2004 um 19:52]
__________________

My own weblog

:: 1944 D-Day: Operation Overlord :: Red Orchestra: Ostfront 41-45

Clan: No clan
Postings: 411

I saw some rotary engine last week, mostly the Germans used grease-oil as a fuel, but the engines could not compress it so all oil would ignite so pilots where always dirrrty.

The engines almost never could get all power because the grease-oil wasn't just powerful enough.

So say a engine which has 110hp (16.5kWh), only could spin at 10kWh equal to 66hp.

__________________

My own weblog

:: 1944 D-Day: Operation Overlord :: Red Orchestra: Ostfront 41-45

Clan: [BAC]
Postings: 93

there were made thousends of rotary engines
by junkers in WW1
__________________
hoe later op de dag, hoe minder kans op een ochtenderectie

Clan: Team Frontline18
Postings: 5411

[1st.] H3nry3 hat folgendes geschrieben:

I saw some rotary engine last week, mostly the Germans used grease-oil as a fuel, but the engines could not compress it so all oil would ignite so pilots where always dirrrty.

The engines almost never could get all power because the grease-oil wasn't just powerful enough.

Sorry, but I think you are wrong with both: These engines did use petrol, but this was supplied through the propeller shaft. As the rotating mass of a rotary engine was rather high, this shaft had to be well greased and so the fuel always took a certain amount of grease oil with it into the cylinders.
There the fuel was burned, but not the oil (with a higher combustion temperature) which left the engine together with the exhausts as a thin black spray which covered most of the planes fore fuselage within about half an hour (including the pilot!).

The reason, why rotary engines almost never had more than 110-130 hp simply was, that any increase of power would have ment an increase in engine weight and torque, making the plane extremely hard to fly.
Have a look at the Camel with a 130hp engine and you know want I mean...

__________________
Geschichte ist die L�ge, auf die man sich geeinigt hat. (Napol�on Bonaparte)

Clan: No clan
Postings: 411

Brilliant..., but can you make the engine make a more spurrty sound? Like its using a non-efficient fuel?? And some effects when the plane catches fire, can you make it leave a smoke/grease residu and a more buzz-buzz-plup sound???

And about that rotating rotating engine, making it a second propellor means that those holes in front need to be see-thru so I can see the engine through those holes.

[Editiert von [1st.] H3nry3 am 02.Dec.2004 um 11:24]
__________________

My own weblog

:: 1944 D-Day: Operation Overlord :: Red Orchestra: Ostfront 41-45

Clan: Team Frontline18
Postings: 5411

[1st.] H3nry3 hat folgendes geschrieben:

..., but can you make the engine make a more spurrty sound? Like its using a non-efficient fuel??

I'll ask our sound guys (Lexi, Hellcat, CrisMoreno).

[1st.] H3nry3 hat folgendes geschrieben:

And some effects when the plane catches fire, can you make it leave a smoke/grease residu and a more buzz-buzz-plup sound???

I'm not sure if the BF-engine can trigger a sound when catching fire, but a short smoketrail should be possible (only going right back, but not following the flight path).

[1st.] H3nry3 hat folgendes geschrieben:

And about that rotating rotating engine, making it a second propellor means that those holes in front need to be see-thru so I can see the engine through those holes.

That should be no problem, IF the model is detailed enough (i.e. if the modeller has build a complete engine and not only the cylinders visible from the outside).

A better answer?

__________________
Geschichte ist die L�ge, auf die man sich geeinigt hat. (Napol�on Bonaparte)

Clan: No clan
Postings: 411

Yup, thanks. But now I'm going to make a thread where people can say all their plans.
__________________

My own weblog

:: 1944 D-Day: Operation Overlord :: Red Orchestra: Ostfront 41-45

Clan: Kein Clan
Postings: 5428

The models all ready for rotary engines. Also in a internal beta version between 1.30 and 1.45 we had rotary engines in the Fokker DrI. This Change was the reason for the misbalance between Spad and Fokker.

Based on some serious problems with this rotary engines, we decide to hold this feature out. The desicion was made on the base that the visuall effect is rather small and the problems are not easy to solve.
__________________
Dicke Kinder sind schwerer zu kidnappen!

Clan: No clan
Postings: 411

Well it should be easy to make, a second propellor even when this propellor is hidden behind another object should be possible in the RFA2 engine.

Oh and something else, I have't seen the A7V/U version yet... This seemed to be the most used German tank in the whole Great War.
__________________

My own weblog

:: 1944 D-Day: Operation Overlord :: Red Orchestra: Ostfront 41-45

Clan: 0
Postings: 1344

[1st.] H3nry3 hat folgendes geschrieben:

...Oh and something else, I have't seen the A7V/U version yet... This seemed to be the most used German tank in the whole Great War.

[ot]
i don't think so...the A7V/U was never used in service.
in september 1918, 20 were ordered at Daimler, but by the end of the war only 1 prototype was available.
the most-used tanks of the Germans were probably captured Mark IV's (Beutepanzer IV). i think about 75 of them were used, whereas only 20 A7V where produced
[/ot]

__________________
See the most beautiful jetfighter aircraft in action.

Clan: Team Frontline18
Postings: 5411

Jep, Sentenza is absolutely right.

__________________
Geschichte ist die L�ge, auf die man sich geeinigt hat. (Napol�on Bonaparte)

Clan: Canadian Engineers
Postings: 801

Topic hat folgendes geschrieben:

How to make rotary engine rotate

Spin and repeat.

Clan: No clan
Postings: 411

Yup, guessed the same. But now I know you said it, now I'm sure of it.
__________________

My own weblog

:: 1944 D-Day: Operation Overlord :: Red Orchestra: Ostfront 41-45

Clan: No clan
Postings: 411

Parabellum hat folgendes geschrieben:

[1st.] H3nry3 hat folgendes geschrieben:

I saw some rotary engine last week, mostly the Germans used grease-oil as a fuel, but the engines could not compress it so all oil would ignite so pilots where always dirrrty.

The engines almost never could get all power because the grease-oil wasn't just powerful enough.

Sorry, but I think you are wrong with both: These engines did use petrol, but this was supplied through the propeller shaft. As the rotating mass of a rotary engine was rather high, this shaft had to be well greased and so the fuel always took a certain amount of grease oil with it into the cylinders.
There the fuel was burned, but not the oil (with a higher combustion temperature) which left the engine together with the exhausts as a thin black spray which covered most of the planes fore fuselage within about half an hour (including the pilot!).

The reason, why rotary engines almost never had more than 110-130 hp simply was, that any increase of power would have ment an increase in engine weight and torque, making the plane extremely hard to fly.
Have a look at the Camel with a 130hp engine and you know want I mean...

Sorry, a slight misunderstanding.

I forgot to say that the grease-oil was mixed with the petrol to grease to engine.
The massive G-force the engine would encounter was so powerful that "just greasing the engine" did not help. So they mixed it with the fuel, just like a two-tact combustion engine.
__________________

My own weblog

:: 1944 D-Day: Operation Overlord :: Red Orchestra: Ostfront 41-45