Antonov An-12 questions
Thread Starter
Joined: Sep 2007
Posts: 89
Likes: 0
From: UAE & Africa
Antonov An-12 questions
Any An-12 crews here who can answer a couple of definitive questions;
1) Does the An-12 have reversible propellers?
2) Does the aircraft use Water Methanol injection?
1) Does the An-12 have reversible propellers?
2) Does the aircraft use Water Methanol injection?
Joined: Jun 2007
Posts: 180
Likes: 0
From: In this very moment of a short life.
Thats a negative on both, though in temps above +30c the blades do go past BETA by a small ammount. The BETA mode is very effective, as its a constant speed engine. FYI the Chinese built An-12 has a pressurised hull and reverse.
Last edited by Siguarda al fine; 5th December 2009 at 06:55.
Thread Starter
Joined: Sep 2007
Posts: 89
Likes: 0
From: UAE & Africa
Thanks a stack Saf!
The aircraft commander was showing me the propeller control mounted above the pilot's windshield that locks out the two inner engine's props for landing. I think it's called a 'VPR' and it seems to be an important checklist item. I guess it would come down fast if all four propellers went into 'flat' pitch over the threshold.
The aircraft commander was showing me the propeller control mounted above the pilot's windshield that locks out the two inner engine's props for landing. I think it's called a 'VPR' and it seems to be an important checklist item. I guess it would come down fast if all four propellers went into 'flat' pitch over the threshold.
Joined: Jun 2007
Posts: 180
Likes: 0
From: In this very moment of a short life.
During the approach phase engines 1 and 4 are reduced to FLT IDLE and 2 and 3 are used to regulate the ROD. This is to avoid the 2 and 3 props discing at low power and reducing or even cutting off the airflow over the the elevator. The prop controls you were shown were the BETA switches which are operated by the FE upon touch down.
