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B-727 JATO

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B-727 JATO

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Old 23rd Feb 2015, 17:09
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B-727 JATO

http://aviationtrivia.********.com/2...oeing-727.html
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Old 23rd Feb 2015, 17:12
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Link edited by PPRuNe...
Not working.
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Old 23rd Feb 2015, 17:13
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The link doesn't open but I'm guessing it's Mexicana
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Old 23rd Feb 2015, 17:24
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Yah, guess PPRuNe doesn't like the link for some reason, but yes it's about Mexicana's JATO equipped 727's.
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Old 23rd Feb 2015, 17:29
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https://m.youtube.com/watch?v=G7LErwBNobU

Hopefully this one works
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Old 23rd Feb 2015, 17:35
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Mexicana jato turns up a video - low quality unfortunately.

I faintly recall some Swearingen Metros had a rocket in the tail to help out in case of engine failure.
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Old 23rd Feb 2015, 18:12
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Pity dH didn't use JATO on the Trident 3 instead of that odd boost engine that sometimes caught fire rather than providing thrust.
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Old 23rd Feb 2015, 18:21
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Me, soft spot also. First passenger jet I ever flew in. Sat with two American businessmen. Never forgot conversation; one lived in Florida and an alligator had just ate his poodle. The other lived in New York and said it was less dangerous.
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Old 23rd Feb 2015, 18:27
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henry,
Any details about the rocket motors themselves ?
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Old 23rd Feb 2015, 18:45
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Pity dH didn't use JATO on the Trident 3 instead of that odd boost engine that sometimes caught fire rather than providing thrust.
It was sometimes reluctant to start, but I don't think that ever happened SSD.
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Old 23rd Feb 2015, 18:50
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JATO?

RATO Surely.
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Old 23rd Feb 2015, 19:02
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I heard the plastic compressor blades sometimes melted!
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Old 23rd Feb 2015, 19:11
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I flew a Danair one that had been fitted. The cbs were still there and there was a huge plank on the upper fuselage - a repair after a large fire...
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Old 23rd Feb 2015, 19:46
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there was a huge plank on the upper fuselage - a repair after a large fire...
from Flight:
Gear retraction on runway during touch and go landings, resulted
in fire when Jato bottles ignited.
My recollection is that the reinforcement along the top of the fuselage was from the rebuild carried out by American Jet Industries who spliced on the tail section from another 727. Doesn't seem to be anything on Google I can find immediately.
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Old 23rd Feb 2015, 20:39
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Old 23rd Feb 2015, 20:55
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I flew a Danair one that had been fitted. The cbs were still there and there was a huge plank on the upper fuselage
G-BMLP if memory serves, could be wrong, it's been a while.
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Old 23rd Feb 2015, 21:01
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I would consider the best use of additional trust to be in the moment of roll, where the difference between airspeed and the flow of the additionel trust is biggest :-/
Since used in the moment of lift (terrible time to experience a misfire BTW!), are the angled direction considered giving lift as well as trust?

Beside: A terrible between-the-line message to the passengers: This plane is almost impossible to get in the air :-o
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Old 23rd Feb 2015, 21:12
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SSD - Oddly enough the Trident 3 test aircraft was fitted with a rocket motor. It was installed vertically on the # 2 engine bulkhead. The idea was that in the event of a deep stall developing firing the rocket would pitch the nose down. I do not know if it was ever used.
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Old 23rd Feb 2015, 22:38
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Back when I first started at Boeing, I talked with a few engineers that had been involved in the 727 JATO installation. They seemed to consider the JATO a 'rule bender' - said that when they flight tested them the difference in aircraft performance was barely noticeable.

JATO bottles are commonly used on C130's operating on the Greenland icecap to get the aircraft up and away in a hurry .
A few years back, I was at Greenland Kangerlussuaq airport doing some 747-8 flight testing. The first day we were there it wasn't cold enough to do the testing we were planning so we pretty much got the day off. Wondering around town there were literally hundreds of used JATO bottles sitting round - set up as impromptu fences/barriers, big ashtrays, etc.

Apparently JATO bottles are not considered reusable...
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Old 24th Feb 2015, 00:03
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tdracer,
The Arado 234 used RATO packs, which were dropped with 'chutes after take-off and re-used.
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