Author Topic: Engine torque  (Read 901 times)

Offline SgtPappy

  • Silver Member
  • ****
  • Posts: 1174
Engine torque
« on: February 09, 2011, 08:34:53 PM »
First, I apologize in advance if this has been stated before, but I can't find the exact thread I was looking for. I remember one of the devs mentioned in a thread that the game was coded so that even if the player shot the throttle from 0 - 100%, the MAP lags so to avoid damage. I assume this damage is incurred by the huge sudden torque that can flip the plane.

Can one of the devs confirm or deny this?

If this is confirmed, would it be possible to have the full effect modeled so I can actually flip my plane upon t/o?  :P
I am a Spitdweeb

"Oh I have slipped the surly bonds of earth... Put out my hand and touched the face of God." -J.G. Magee Jr.

Offline Mar

  • Gold Member
  • *****
  • Posts: 2204
Re: Engine torque
« Reply #1 on: February 09, 2011, 09:07:46 PM »
Possible to go from 0 to WEP instantly, not possible to damage your plane via any means other than crashing, getting shot, or over-G. The torque from going to 0 to WEP is not enough to flip the plane (in AH at least).
𝒻𝓇𝑜𝓂 𝓉𝒽𝑒 𝓈𝒽𝒶𝒹𝑜𝓌𝓈 𝑜𝒻 𝓌𝒶𝓇'𝓈 𝓅𝒶𝓈𝓉 𝒶 𝒹𝑒𝓂𝑜𝓃 𝑜𝒻 𝓉𝒽𝑒 𝒶𝒾𝓇 𝓇𝒾𝓈𝑒𝓈 𝒻𝓇𝑜𝓂 𝓉𝒽𝑒 𝑔𝓇𝒶𝓋𝑒

  "Onward to the land of kings—via the sky of aces!"
  Oh, and zack1234 rules. :old:

Offline SgtPappy

  • Silver Member
  • ****
  • Posts: 1174
Re: Engine torque
« Reply #2 on: February 09, 2011, 09:29:50 PM »
Yea I know, but there are accounts of when pilots forgot and screwed up, or were just very careful.

I.e. an excerpt from John Stanaway's "P-38 Lightning Aces of the Pacific and CBI":
"...the P-38 could use virtually full power from brakes off thanks to the neutralised torque of its props... The pilot in the single-engined P-51 had no such advantage, and therefore had to gradually feed on the power in order to avoid the vicious swing associated with excessive prop torque on take-off."

In AH, we can easily slam the throttle forward and hit WEP regardless of the plane as long as we hit the rudder as well. Of course, IRL, planes dont flip over on torque in general but they do swing much. Spitfire XIV pilots were advised not to use full power on take-off as that would have produced much torque and that a lower setting was enough.
« Last Edit: February 09, 2011, 09:31:31 PM by SgtPappy »
I am a Spitdweeb

"Oh I have slipped the surly bonds of earth... Put out my hand and touched the face of God." -J.G. Magee Jr.

Offline hitech

  • Administrator
  • Administrator
  • *****
  • Posts: 12425
      • http://www.hitechcreations.com
Re: Engine torque
« Reply #3 on: February 10, 2011, 09:54:50 AM »
1. it is not torque that causes the plane to yaw during take off, it is primary slip stream / vortex that does, and that becomes max when the throttle is completely forward.

2. Torque does not change drastically between low rpm and high rpm but I do not have precise torque curves on the engines. Just because the prop is revving up, it does not change the torque.

3. In a real plane you do not have 1 button to go from 0 to max so we ramp it over about 1 sec.

HiTech

Offline VonMessa

  • Plutonium Member
  • *******
  • Posts: 11922
Re: Engine torque
« Reply #4 on: February 10, 2011, 10:01:57 AM »
Just be glad that there aren't any cross-winds  :aok

Oh the ground loop whines we would have  :D
Braümeister und Schmutziger Hund von JG11


We are all here because we are not all there.

Offline Mirage

  • Nickel Member
  • ***
  • Posts: 375
Re: Engine torque
« Reply #5 on: February 10, 2011, 06:35:00 PM »
1. it is not torque that causes the plane to yaw during take off, it is primary slip stream / vortex that does, and that becomes max when the throttle is completely forward.

2. Torque does not change drastically between low rpm and high rpm but I do not have precise torque curves on the engines. Just because the prop is revving up, it does not change the torque.

3. In a real plane you do not have 1 button to go from 0 to max so we ramp it over about 1 sec.

HiTech
HiTech, why is it that for those who are using mouse and keyboard, that the throttle buttons - & = do not increas MP when held down like the Prop RPM buttons?
Kommando Nowotny

I/Jg-301Gelb Zehn |

Offline SgtPappy

  • Silver Member
  • ****
  • Posts: 1174
Re: Engine torque
« Reply #6 on: February 10, 2011, 09:34:14 PM »
Ah yes, thanks Hitech.

I should say slipstream instead, as torque refers to the engine's mechanical spinning force;  a force marked in the Sopwith Camel.

So then I rephrase my question: in addition to the 1 second lag (simulating a throttle-up), is there any other kind of time delay that prevents the engine from being revved up quickly to avoid a strong slipstream-induced tip?

Also, what Mirage posts is also interesting.
I am a Spitdweeb

"Oh I have slipped the surly bonds of earth... Put out my hand and touched the face of God." -J.G. Magee Jr.