By: Arabella-Cox - 6th December 2011 at 07:53
The howl is produced by the air streaming over the intake I believe – because the 301 series engined Vulcan has a larger in take the air streams over in a different pattern but doesn’t produce the howl.
558 is a 201 engined a/c – 655 is 301.
By: nuuumannn - 6th December 2011 at 01:21
You can tell the difference between ‘201 and ‘301 powered Vulcans by the size of their exhausts. ‘301s are bigger in diameter but shorter in length than the ‘201 exhausts as fitted to XH588. These are ‘301 exhausts:
By: Arabella-Cox - 5th December 2011 at 22:28
Takeoff thrust on 201’s is 17,000lbs and on 301’s is 18,000lbs and in cruise is 16,000lbs and 17,000lbs respectively.
By: efiste2 - 5th December 2011 at 22:22
Sorry my mistake, also I am I right in thinking that the 301’s dont produce the “howl” 😮
By: Blue_2 - 5th December 2011 at 21:55
but 558’s on 201’s…
By: efiste2 - 5th December 2011 at 21:44
Wow theres a depth of knowledge here…….so is the original statement correct and just one Olympus (301) is more pwerfull than a grid of F1 cars (pardon my nievity:o)
By: JagRigger - 5th December 2011 at 21:18
Edited as above !
By: MerlinPete - 5th December 2011 at 21:10
well the Vulcan produces a total of 16,000 Ibs of static thrust and that all 4 engines so 1 engine has about 4,000 Ibs of static thrust.
Each of the engines in XH558, if they are Olympus 301s, which they should be, produce 20,000lb thrust. I will let JagRigger do the sums!
Pete
By: Paul Cushion - 5th December 2011 at 21:09
4000lbs per engine?! I think it’s more like 18000lbs for an Olympus 301!
By: Arabella-Cox - 5th December 2011 at 21:07
I thought 1 engine produced 18 -20,000lbs static thrust :confused:
Edit: Snap Blue_2
By: Blue_2 - 5th December 2011 at 21:06
I thought Vulcan chucked out 18-21,000lbs static thrust per engine, depending if it had 201 or 301 engines?
By: JagRigger - 5th December 2011 at 20:42
…… which makes the original case a bit iffy
24 GP cars @ 800 hp = 19,200 hp
Of couse if the Vulcan was going a bit faster………
OK – recalculated above using 20,000 lb / engine
makes it a bit closer !
By: JagRigger - 5th December 2011 at 20:38
Bit of research gives a formula:
Pa = Ta V / 325, where –
Pa = Propulsive Power available in Horse Power, Ta = Thrust available in Pounds, and V = Velocity in Knots.
If the Vulcan is doing 250 kts, each engine is producing 15,385 Horse power 😀
By: 8674planes - 5th December 2011 at 20:23
well the Vulcan produces a total of 16,000 Ibs of static thrust and that all 4 engines so 1 engine has about 4,000 Ibs of static thrust.
By: Arabella-Cox - 5th December 2011 at 20:10
Olympus power
Easily so.
Anon.
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December 5, 2011 at 8:04 pm