RAF P-8 breaks the sound barrier

[ORAC]

Hmmm - one of those secret supersonic P-8s again….

Twitter

[KonfusedofKinloss]

A bit more research needed at the Daily Record I believe....

Scots anti-submarine plane takes off causing ‘sonic boom’ felt across UK - Daily Record

[Toadstool]

Originally Posted by KonfusedofKinloss

A bit more research needed at the Daily Record I believe....

Scots anti-submarine plane takes off causing ‘sonic boom’ felt across UK - Daily Record

Funnily enough, the report has been taken down. So many errors in the headline, never mind the article.

[NutLoose]

According to Daily Record

https://ukdefencejournal.org.uk/news...nd-sonic-boom/

[charliegolf]

Did I dream up the story/legend/myth that a VC10 crew left the climb setting on a bit long and, er, got a bit speedy?

I do dream up such scenarios... Age.

CG

[sealo0]

Originally Posted by NutLoose

According to Daily Record

https://ukdefencejournal.org.uk/news...nd-sonic-boom/

bit early for the 1st of April

[BEagle]

Did I dream up the story/legend/myth that a VC10 crew left the climb setting on a bit long and, er, got a bit speedy?

If you did, 'twas utter bolleaux!

[Top West 50]

I think I came close in a Victor B1. On high speed shallow dive without mach strut, instructor said, "look out!" Did we used to go as fast as .98? Someone will remember. Anyway, straight from training I looked out - of the window and lost track of the mach meter momentarily. Whatever the speed it recovered beautifully.

[charliegolf]

Originally Posted by BEagle

If you did, 'twas utter bolleaux!

Bit sharp! Piles at you again?

CG

[Bksmithca]

Originally Posted by sealo0

bit early for the 1st of April

I would have to agree, hard to believe a 737-800 would be capable of breaking the sound barrier

[meleagertoo]

Originally Posted by Bksmithca

I would have to agree, hard to believe a 737-800 would be capable of breaking the sound barrier

Particularly during take-off!

[Consol]

I was talking to a retired Bucaneer crew member once and I asked could go supersonic. He said it wasn't meant to but he had been supersonic in one....

[JEM60]

A D.C.8 Airliner went supersonic many years ago. Hard to believe, but it WAS true!.

[chevvron]

Originally Posted by JEM60

A D.C.8 Airliner went supersonic many years ago. Hard to believe, but it WAS true!.

I thought it was a Convair CV990; the one with 'speed pods' like the Victor had.

[Commander Taco]

Originally Posted by chevvron

I thought it was a Convair CV990; the one with 'speed pods' like the Victor had.

Nope. It was a DC8 that was later delivered to Canadian Pacific Airlines.

[tdracer]

Originally Posted by Commander Taco

Nope. It was a DC8 that was later delivered to Canadian Pacific Airlines.

It was done during the DC-8 flight test program - intentionally. Reportedly a bit of a 'one-up' jab at the 707, since even if Boeing had duplicated it, they'd still be second...

I looked at a whole lot of 747-8 flight test data showing Mach numbers above 0.99 during flutter testing (granted, not sure how accurate the instrumentation was at that speed). Never saw anything over 1.00, but surely it wouldn't have taken much to do it.

[chevvron]

But the Victor did go supersonic a few times (once with 4 Lightnings in tow) ; there was a thread on here about a year ago.

[VictorGolf]

Myth or not I heard the VC-10 supersonic story from an East African pilot. Apparently it was on an acceptance flight and the crew agreed to see "What will she do".True or not I still loved being SLF in their VC-10s.

[LOMCEVAK]

One consideration here, which has been mentioned briefly above, is true M versus indicated M. Static source errors and pitot errors are often very large in the transonic region so true M could be significantly greater or less than what is indicated. I know of one Tornado ADV trial during which the crew thought that they had remained subsonic but booms had been dropped over the Somerset levels and surrounding area!

I have seen about 0.97M in a Buccaneer (c. ISA -35C at low level) but would like to hear about someone going supersonic because tailplane power was very low at high M, hence why complete loops were not cleared in case you went too high M on the down vertical!

[Timelord]

Lomcevak, R. .k P. . . ..ps insisted he took me supersonic (indicated) ( medium level shallow dive) on a Buccaneer trip at the end of my tour despite my reluctance. What really surprised me was that he asked Scottish for clearance!