Clydenairways
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Posts: 1099
Joined: Thu Jan 11, 2007 8:27 am

Hosepipe Assisted AN24 Startup?

Thu Jul 08, 2010 9:49 am

Never saw anything like this before, the guy is pointing a hosepipe at the engine during startup.
Is this really for cooling during startup as the photo comment suggests?

http://www.airliners.net/photo/Iraero/Antonov-An-24RV/1737483/L/
 
WrenchBender
Posts: 1662
Joined: Wed Feb 04, 2004 5:59 am

RE: Hosepipe Assisted AN24 Startup?

Fri Jul 09, 2010 5:33 pm

Probably just doing a water wash on the engines. We were required to do a desalination rinse on our aircraft if operated within a certain distance and altitude of salt water at the end of every flying day.

WrenchBender
Silly Pilot, Tricks are for kids.......
 
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HAWK21M
Posts: 29867
Joined: Fri Jan 05, 2001 10:05 pm

RE: Hosepipe Assisted AN24 Startup?

Sat Jul 10, 2010 10:36 am

Waterwash in progress.The Water Aimed at the Engine Inlet & not the Propeller.
regds
MEL.
I may not win often, but I damn well never lose!!! ;)
 
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kanban
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Joined: Sun Jan 06, 2008 1:00 am

RE: Hosepipe Assisted AN24 Startup?

Sun Jul 11, 2010 2:01 am

I think the photographer's comments...Chita is not near a marine environment... it would appear the an AN-24 is difficult to start at 41C (106 F)... had a truck like that had to cool the starter on hot days
 
musang
Posts: 788
Joined: Sun Apr 08, 2001 4:11 am

RE: Hosepipe Assisted AN24 Startup?

Thu Jul 15, 2010 9:59 pm

Assuming ITT (or TIT or whatever Antonovs use) is the limiting start parameter on a hot day, is it an attempt to get the water into the compressor and all the way down the gas path to keep the temp below limit?

musang
 
dandaire
Posts: 62
Joined: Fri Jul 11, 2008 9:16 am

RE: Hosepipe Assisted AN24 Startup?

Fri Jul 23, 2010 12:29 pm

It looks like an attempt to increase the mass flow of air into the engine by cooling the air with water, something like the water injection on the spey engines fitted to the BAC 1-11.
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