sovietjet
Posts: 2549
Joined: Sat Mar 15, 2003 12:32 am

An-124/225 Engines

Wed Sep 17, 2003 5:47 am

I've heard several times that an An-124 or -225 runs its engines at max for a couple of minutes when it's on the runway before takeoff. Why do they do that?
 
N243NW
Posts: 1597
Joined: Thu Jul 24, 2003 4:29 am

RE: An-124/225 Engines

Wed Sep 17, 2003 6:16 am

I've never heard that. Do they "run up" one or two engines at a time, or do all of them run up at once? The latter would put an enormous strain on the brakes, I assume. I don't even know why a jet run-up would be necessary. I'm curious as well.
-N243NW (My 100th post!) Big grin

[Edited 2003-09-16 23:17:50]
B-52s don't take off. They scare the ground away.
 
POSITIVE RATE
Posts: 2121
Joined: Sun Sep 16, 2001 11:31 am

RE: An-124/225 Engines

Wed Sep 17, 2003 11:56 am

I've seen in-cockpit footage of an AN-225 taking off and the pilots applies FULL power to all 6 engines at once. The jetblast behind is very severe and would probably damage a plane lined up behind it.
 
Alessandro
Posts: 4962
Joined: Wed Sep 12, 2001 3:13 am

RE: An-124/225 Engines

Wed Sep 17, 2003 1:00 pm

Depends on the temperature outside the airplane I guess?
From New Yorqatar to Califarbia...
 
SSTjumbo
Posts: 2579
Joined: Sun Jun 17, 2001 3:29 am

RE: An-124/225 Engines

Wed Sep 17, 2003 1:47 pm

In my enthusiastic passenger experience, I took off from O'Hare 31R enroute San Francisco, and we applied full throttle before rolling (UA 747-200). Coming back, the pilot flying a UA 747-400 decided to take off to the north, whatever runway that is, though I know it's comparitavely short, and we pretty much made a casual takeoff without any rnwy run-up. In conclusion, I don't know why they do or don't do it.
I don't know, so this is my signature.
 
ConcordeBoy
Posts: 16852
Joined: Thu Feb 01, 2001 8:04 am

RE: An-124/225 Engines

Thu Sep 18, 2003 3:59 am

Forgive my ignorance: but what type of engines are on the AN225 and what are their trust ratings?
Faire du ciel le plus bel endroit de la terre c'est impossible sans Concorde!
 
sovietjet
Posts: 2549
Joined: Sat Mar 15, 2003 12:32 am

RE: An-124/225 Engines

Thu Sep 18, 2003 4:13 am

6 ZMKB Progress Lotarev D-18T turbofans each engine makes 51,590 pounds of thrust. Total thrust is 309,540 for the An-225. The An-124 has 4 D-18s.

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