Re: HS Trident

Date:         16 Jun 97 21:35:38 
From:         Steve Lacker <>
Organization: applied research laboratories
References:   1
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Dimitrios Tombros wrote:
> Are there any HS Tridents still flying (airliner or military)? Why did
> this aircraft which was so similar to B727 have so little success? Was
> it some kind of construction or operational problem or just bad
> marketing?

Two words: Hideously underpowered. They were so under-powered that the
final Tridents built actually had 4 engines- a small "booster" engine
was added in a pod at the base of the tail. Normal takeoff/climb
performance was not great, and I'm sure that hot/high performance was
nonexistant. The 727, in contrast, was considered a real hot-rod for its
day, not only because it had plenty of power but because of its flap
system. By modern standards, the 727 is no longer a hot-rod (the 757 set
a new standard in that area...) but its not a slouch either. Just look
at the other thread on cruise speeds, for example.

Stephen Lacker
Applied Research Laboratories, The University of Texas at Austin
PO Box 8029, Austin TX 78713-8029