PPRuNe Forums - View Single Post - Hawker Siddeley Trident 3B and its fourth "booster" engine
Old 14th Apr 2023, 14:57
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Central Scrutinizer
 
Join Date: Apr 2014
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Originally Posted by blind pew
Since no one has answered re operation iirc
it was started on taxi out and had to be warmed up for around a minute. Then a selection was made on a toggle switch into the take off mode. Once the throttles were opened up on take off then it too developed take off thrust. Think it generally ran for around a minute then cut out.
Might had shut down latest at noise cut back from throttle position.
‘Don’t know anything about cooling period.
Couldn’t be restarted as as mentioned lubricated by total oil loss system like speedway bikes.
Two notable incidents with lack of performance on the 3..one out of Malaga where they diverted into Madrid having lost an engine but didn’t check WAT limits (approach climb)..and were forced into a go around by ATC but continued flying downhill..skipper realised and besides flying down a valley accelerated and cleaned up to get onto the front side of the drag curve.
The second was a night take off out of Malta where they took some approach lights out then flew below 50ft radio altitude with the stick shake going until they were able to accelerate. Whoever put the books together added 1km to the available runway length. Got the jump seat from a skipper who had been a copilot on that flight and said what a fabulous bit of flying he had witnessed.
On the T2 we had water injection.
Very interesting. Thanks a lot for these!
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