|Oct 11, 2012, 06:39 PM|
What is the Velocity of the pumped air in an EDF?
I am using an E-Flite DeltaV 15 EDF on 3S Lipo and it Absorbs 300 Watts from the Lipo. E-Flite says the velocity of the air in the tailpipe is 71 mph.
Is there a mathematical method of calculating the exhaust velocity from knowing the Watts and the density of air? Is another factor needed?
The density of air is 1.29 gms per liter.
|Oct 11, 2012, 09:50 PM|
Joined Jun 2012
There is no formula for this, only tools to measure it. and your exhaust velocity ( efflux ) is changed by your exhaust tube exit diameter.
For more info on this look at the last couple of pages of the Change sun 10blade 70mm fan.
There is a bunch of engineers talking about that right now.
|Oct 11, 2012, 10:05 PM|
Check out some of these threads:
|Category||Thread||Thread Starter||Forum||Replies||Last Post|
|Discussion||Ducted Fan & Velocity of the air in tailpipe.||Texas Buzzard||Modeling Science||65||Oct 22, 2012 12:54 PM|
|For Sale||100 psi Robart Air Pump with built in Gauge||CedarTree||Aircraft - General - Miscellaneous (FS/W)||1||Sep 03, 2012 07:18 AM|
|Question||Hypothetical question - what happens if you run an EDF with the duct removed?||LMF5000||Power Systems||5||Mar 11, 2012 08:56 AM|
|what is the airspeed velocity of an unladen swallow?||roguewolf||Parkflyers||36||Oct 25, 2003 12:12 AM|
|WHAT is the airspeed velocity of an unladen... SlowStick?||eBird||Parkflyers||55||Aug 18, 2003 02:28 PM|