Engine Weight Analysis

[A22Y80]

Will I be able to best estimate engine component weight from flow properties or/ geometric properties?

 

[plasgears]

It would be best to benchmark late existing models of the same or similar bypass ratio, etc. Some smart old hands may have done this already, but try getting your hands on it!

 

[rb1957]

if you're looking for very high level numbers (what typically does an engine weigh ?) Raymer "Aircraft Design" or Torenbeek "Synthesis of Subsonic Airplane Design" would be good places to start.

Jane's used to have a whole bunch of data on engines. Maybe pick something out from there, then ask the manufacturer ?

 

[KENAT]

Ah, Raymer, good suggestion.

You might be able to do web searches for engines, perhaps on manufacturer web sites.

If you give a bit more explanation on what you're doing you may get better answers.

 

[dgapilot]

The engine Type Certificate Data Sheets have dry weights. Thare are available on the FAA Regulatory and Guidance Library web site at

http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgWebcomponents.nsf/HomeFrame?OpenFrameSet

 

[A22Y80]

Thanks for all your points.

Well,I think one has to consider both mechanical and aero design constraints before sizing a component. If a manufacturer requires a high bypass turbofan engine then its weight will be a function of performance parameters ( mainly dimensionless group) like pressure ratio, efficiency.

Do you have any comments?

 

[A22Y80]

Thanks for all your points.

Well, I think one has to consider both mechanical and aero design constraints before sizing a component. If a manufacturer desire for a high bypass turbofan engine then its weight will be a function of performance parameter (mainly dimensionless group) like Fan Pressure ratio, efficiency.

Do you have any comments?