What if

Odds & Sods (aka Non Modelling) => Got any good Links put them here => Topic started by: Leading Observer on October 17, 2020, 02:49:11 am

Title: Supersonic Harrier testbed
Post by: Leading Observer on October 17, 2020, 02:49:11 am
Over on FB TSR Joe posted this link [url][https://www.britmodeller.com/forums/index.php?/topic/234964499-hawker-siddeley-harrier-xv798-supersonic-harrier-evaluation//url]
Title: Re: Supersonic Harrier testbed
Post by: sideshowbob9 on October 17, 2020, 02:51:24 am
^ I had no knowledge of this! Thanks for the link!  :thumbsup:
Title: Re: Supersonic Harrier testbed
Post by: Hobbes on October 17, 2020, 02:59:21 am
Lest you think there was a plan to make a supersonic version of the P.1127 Harrier: that aircraft was used to test plenum chamber burning (PCB), i.e. afterburning in the nozzles of a VTOL engine like the Pegasus. The tests were all on a gantry, AFAIK, so the Harrier never flew with this engine.

The project was part of the BAe P.1216 (https://en.wikipedia.org/wiki/British_Aerospace_P.1216) development.
Title: Re: Supersonic Harrier testbed
Post by: Leading Observer on October 17, 2020, 03:59:11 am
Lest you think there was a plan to make a supersonic version of the P.1127 Harrier: that aircraft was used to test plenum chamber burning (PCB), i.e. afterburning in the nozzles of a VTOL engine like the Pegasus. The tests were all on a gantry, AFAIK, so the Harrier never flew with this engine.

The project was part of the BAe P.1216 (https://en.wikipedia.org/wiki/British_Aerospace_P.1216) development.

In the real world that may have been true. On here...
Title: Re: Supersonic Harrier testbed
Post by: Nick on October 17, 2020, 04:09:13 am
I haven't been to Weston on Mud for a very long time. I went to one model show there and the Helicopter Museum back in 2007. It must have changed a bit in that time.
Title: Re: Supersonic Harrier testbed
Post by: zenrat on October 17, 2020, 04:11:41 am
Tided up your brackets. (https://www.britmodeller.com/forums/index.php?/topic/234964499-hawker-siddeley-harrier-xv798-supersonic-harrier-evaluation)

Title: Re: Supersonic Harrier testbed
Post by: Hobbes on October 17, 2020, 04:12:40 am
XV798 isn't at Weston any more, it's being restored at the moment at the Hucknall Flight Test Museum.
Title: Re: Supersonic Harrier testbed
Post by: Doug K on October 17, 2020, 04:20:23 am
There was a section of Francis K Masonís Harrier book which covered this. It was amazing to see the images of the test Ed with full PCB running. Basically 2 downward afterburners!

Another project killed by the RAFís reluctance to let go of their big runways...
Title: Re: Supersonic Harrier testbed
Post by: zenrat on October 17, 2020, 04:24:07 am
Britmodeller is a PitA because to makes me disable my adblocker.  Grrrrrr.

I have in my head an image of a Harrier taking off vertically on full afterburner screaming up into the sky on pillars of fire.
Title: Re: Supersonic Harrier testbed
Post by: Rheged on October 17, 2020, 05:25:23 am
I have in my head an image of a Harrier taking off vertically on full afterburner screaming up into the sky on pillars of fire.

A Biblical quote from Exodus  seems to suit this well.  As they trekked through the wilderness, they were led by "A pillar of smoke by day and a pillar of fire by night".   
Title: Re: Supersonic Harrier testbed
Post by: PR19_Kit on October 17, 2020, 09:02:31 am
There's a BS100 engine, complete with those monster front nozzles, on a stand at the FAA Museum at Yeovilton. Compared to a 'normal' Pegasus  engine it's HUGE!
Title: Re: Supersonic Harrier testbed
Post by: JayBee on October 17, 2020, 09:09:19 am
I have in my head an image of a Harrier taking off vertically on full afterburner screaming up into the sky on pillars of fire.

A Biblical quote from Exodus  seems to suit this well.  As they trekked through the wilderness, they were led by "A pillar of smoke by day and a pillar of fire by night".

Not a great idea as it was only the rear nozzels that would have had the PCB, the front ones being cold air, so you would have had an aircraft doing giant cartwheels in the sky!  :rolleyes:
Title: Re: Supersonic Harrier testbed
Post by: PR19_Kit on October 17, 2020, 09:39:20 am
The BS100 engine had PCB on the front nozzles, that's why they were so massive.
Title: Re: Supersonic Harrier testbed
Post by: joncarrfarrelly on October 17, 2020, 02:48:33 pm
As Kit sez, the BS100 is a monster with forward PCB.

(https://live.staticflickr.com/65535/50498568678_6d224cc656_o.jpg)
Title: Re: Supersonic Harrier testbed
Post by: NARSES2 on October 18, 2020, 06:52:54 am
I was going to ask why the different coloured bands, but they explain why  :thumbsup:

Love the drip trays, well I assume that's what they are ?
Title: Re: Supersonic Harrier testbed
Post by: Nick on October 20, 2020, 05:50:37 am
Nice photo. Is that just the workshop stand and not the actual engine testing frame?