PPRuNe Forums - Search Results

Search: Posts Made By: tdracer

Showing results 1 to 4 of 4
Search took 0.00 seconds.

Forum: Tech Log

31st Aug 2014, 03:41

Replies: 40

What determines spool up time?

Views: 13,573

Posted By tdracer

As barit1 noted, it's not about aesthetics - a...

As barit1 noted, it's not about aesthetics - a ducted fan operates distinctly differently relative to an unducted fan (aka a propeller).
It all comes down to the inlet - a unducted fan (prop) sees...

Forum: Tech Log

29th Aug 2014, 17:23

Replies: 40

What determines spool up time?

Views: 13,573

Posted By tdracer

captplaystation, variable geometry - both the fan...

captplaystation, variable geometry - both the fan and the hot section - has been a wet dream of aircraft turbine engine designers for decades (variable geometry compressors have been SOP for a long...

Forum: Tech Log

15th Aug 2014, 00:55

Replies: 40

What determines spool up time?

Views: 13,573

Posted By tdracer

The latest generation of very high bypass engines...

The latest generation of very high bypass engines (such as the GEnx) are very lazy off of minimum ground idle. Tiny core, really big fan - it takes a while to get that fan spinning.

Forum: Tech Log

14th Aug 2014, 18:24

Replies: 40

What determines spool up time?

Views: 13,573

Posted By tdracer

Check Airman When you add fuel to the burner...

Check Airman

When you add fuel to the burner "too fast", you get a condition in the burner called "Thermal Choking" - in short it starts limiting the amount of airflow that the burner can flow. ...

Showing results 1 to 4 of 4