Wikipedia:Picture peer review/Turbofan Labelled

Turbofan Engine, Labelled

An animation of a turbofan engine. This is a 2-spool, high-bypass turbofan typical of those found on modern passenger aeroplanes. Turbofan engines provide good thrust at speeds at up to approximately Mach 1.6, at higher speeds turbojet engines are more effective whilst turboprop engines are more effective at low speeds.
1. Nacelle
2. Fan
3. Low pressure compressor
4. High pressure compressor
5. Combustion chamber
6. High pressure turbine
7. Low pressure turbine
8. Core nozzle
9. Fan nozzle

This animation is of an interesting subject which is relevant to many peoples' lives and provides insights into the engines function. I would be keen to improve it to get it to a featured picture standard, in my opinion this is of similar quality to some of the animations I have previously seen as featured pictures...

As the original creator (with the source Blender file) I would like some really critical comments so I can perfect it!

Creator: Richard Wheeler (Zephyris)

Nominated by: - Zephyris _Talk 19:03, 11 February 2009 (UTC)[reply]

Comments

Biggest problem I can see is the lack of indication of where the actual combustion is going on. Noodle snacks (talk) 04:48, 12 February 2009 (UTC)[reply]
- On my computer, the rotation of the engine's turbines and fan appear to be rotating clockwise. The final LP turbine is correct, however the other turbine vanes aft of the combustion chamber should be rotated. This engine configuration would not operate. Otherwise, really nice animation. —Preceding unsigned comment added by 71.12.180.54 (talk) 18:54, 16 February 2009 (UTC)[reply]
- That was my thought -- not sure how hard it will be to draw a combustion chamber but right now the airflow seems to go straight through from the compressor to the turbine stages without anything in between. The arrows do turn from blue to pink, but it's not clear why just by looking at it. This page shows three different designs for combustion chambers. Fletcher (talk) 13:19, 12 February 2009 (UTC)[reply]
  - Mmm, good suggestion. I think I could do some kind of particle effect there for flames...- Zephyris _Talk 15:02, 12 February 2009 (UTC)[reply]
    - One other possible point of confusion in the caption is that this diagram shows a high-bypass turbofan, but the caption notes turbofans can reach Mach 1.6. That may be true, but wouldn't be true of the model you are actually showing, right? As i understand it the high bypass models are used only into the transonic range; supersonic aircraft would use either low-bypass models or turbojets. Fletcher (talk) 15:14, 12 February 2009 (UTC)[reply]
      - That's a good point, the caption is slightly misleading...- Zephyris _Talk 23:35, 13 February 2009 (UTC)[reply]

Updated version; flame effects in combustion area, tweaked turbine shape to match the "classic" turbine and improved the labels and made them non-language specific.
- I prefer the original method of positioning the numbers, all the lines going everywhere is distracting in the new version. Noodle snacks (talk) 09:04, 17 February 2009 (UTC)[reply]

Seconder

The angles of the turbine blades are not appropriate to the air flow - except of the last turbine. All but last turbines would cause a reverted air flow. Cf. http://www1.rolls-royce.com/history/publications/jet_engine/section01.htm for real turbine details ;nosh:

right3

Blade angles corrected, not sure how I missed that! I also went back to the simpler labelling scheme... - Zephyris _Talk 18:17, 7 March 2009 (UTC)[reply]
- Looks good with the simpler labelling and correct blade orientation – nice work! :-) --Red Sunset 12:31, 8 March 2009 (UTC)[reply]
  - There exists low-bypass turbofans that reach more than Mach 1,6. You can confidently change the label to say that they can be used for speeds surpassing Mach 2 (e.g. the EJ200).- Jasón (talk) 22:11, 7 March 2010 (UTC)[reply]