Blind take off in fog experiments.
Thread Starter
Join Date: Apr 2005
Location: Australia
Posts: 1,421
Likes: 0
Received 0 Likes
on
0 Posts
Blind take off in fog experiments.
In the Fifties I think a BAC One-Eleven was used for the first of Cat 3 landing experiments at Heathrow in thick fog. About that time trials took place on the practicability of blind take offs using a device called a PVD (Para Visual Direction?) I understand it was a device that showed you if you were tracking correctly during the take off run in zero visibility.
Does anyone have any information on the use of the PVD?
Does anyone have any information on the use of the PVD?
Join Date: Jul 2003
Location: ex Brooklands now Shropshire
Age: 62
Posts: 128
Likes: 0
Received 0 Likes
on
0 Posts
If it was the 50's then It didn't involve the VC-10 or 1-11 due to the fact that they first flew in 1962 and 1963 respectivly. Not sure what It was though. Sorry!!.
M5DND
M5DND
Per Ardua ad Astraeus
Join Date: Mar 2000
Location: UK
Posts: 18,579
Likes: 0
Received 0 Likes
on
0 Posts
Quite right m5 - it was, I think, the BLEU Varsity that trialled the units. We are looking, however, to find which - if any - a/c had them fitted operationally? I would guess the aagggh!! TRIDENT (there, I said the word
) did?
) did?
Gnome de PPRuNe
Done a quick bit of reading - it was the Hatfield product (could this be aviation's variation on "the Scottish play" theme?) that made the first fully automatic landing by commercial aircraft in fog at Heathrow in 1966 - John Cunningham was part of the crew. Aircraft was G-ARPB. Sorry, don't know nuffing about the take off kit that A37575 mentions.
The DH Trident was one of the earliest commercial aircraft to be equipped with PVD (Para-Visual Display).
A device resembling a horizontal striped barber's pole, it uses the ILS localiser signal to assist centre-line guidance during low-viz take-offs. The stripes remain stationary so long as the aircraft is on the runway centre-line. If the aircraft deviates, the stripes appear to move in the direction of the runway centre-line, helping to guide the pilot back to the middle of the runway.
A device resembling a horizontal striped barber's pole, it uses the ILS localiser signal to assist centre-line guidance during low-viz take-offs. The stripes remain stationary so long as the aircraft is on the runway centre-line. If the aircraft deviates, the stripes appear to move in the direction of the runway centre-line, helping to guide the pilot back to the middle of the runway.
Join Date: Dec 2001
Location: Nottingham UK
Age: 84
Posts: 5,575
Likes: 0
Received 0 Likes
on
0 Posts
This topic was previously discussed here:-
http://www.pprune.org/forums/showthread.php?t=240962
http://www.pprune.org/forums/showthread.php?t=240962
Join Date: Oct 1999
Location: Swindon, Wilts,UK
Posts: 567
Likes: 0
Received 0 Likes
on
0 Posts
Did the Varsity have an observers position in the Belly? When I was an apprentice at Aberporth in the Late 70's early 80's The fire training hulk was a twin in RAE colours with BLIND LANDING EXPERIMENTAL UNIT down the side and afore mentioned window just aft of the nose wheel. It was burned out and scrapped shortly after I finished my time there. A shame it wasn't placed with a museum considering it probably had more historic value than the examples that have been preserved.
