F35's cleared for flight!!
Discussion
Mave said:
Eric Mc said:
How does the F-35 avoid ingesting hot gases in the hover (or the |Harrier for that matter)?
The jet from the lift fan or cold nozzles acts as a "jet screen"- the plume reduces the forward migration of the hot gases.Eric Mc said:
How does the F-35 avoid ingesting hot gases in the hover (or the |Harrier for that matter)?
With difficulty if the wind changes direction!
Above shows the "box" formed by the strakes [or gun fairings if you have any guns that it] that allow a pressurised area to develop under the puffer jet as it approaches terra firma.
This works best in a straight vertical landing as the effect reduces with forwards motion.
Clever stuff but obviously all those parts need to be tucked away and all that adds weight.
EskimoArapaho said:
Word from Marham is that the existing runway and concrete surfaces aren't suitable for the F-35's VTOL party trick.
I don't know what wittering and Cottesmore were like but certainly when the harriers were on 41sqn at Coningsby they used a "harrier pad" which was a specific concrete surface that was the only place used for VTOL. Edited as wittering is clearly withering on my spell check.....
Edited by ecsrobin on Sunday 20th July 23:29
ecsrobin said:
I don't know what withering and Cottesmore were like but certainly when the harriers were on 41sqn at Coningsby they used a "harrier pad" which was a specific concrete surface that was the only place used for VTOL.
I'll try to find out more. It seems to have come as a bit of a surprise.EskimoArapaho said:
Word from Marham is that the existing runway and concrete surfaces aren't suitable for the F-35's VTOL party trick.
Is this the existing existing runway?No seriously, I had heard that Marham was up for resurfacing any time soon ish ish
Has that one happened, is the 'existing' one about to get another new surface?
I hope against all my expectations that this blarry aeroplane is worth it
This issue is separate to the recent/current Marham resurfacing. It's to do with the hot exhaust destroying 'regular' airbase runway surfaces, and also - due to the chance of damage from the sh*t thrown up from anything but a perfectly engineered surface - complicating any forward deployment.
Found more here: http://aviationweek.com/defense/opinion-f-35b-vert... -
(The comments aren't very positive. Is it too late to get our money back; Sale of Goods Act?)
Found more here: http://aviationweek.com/defense/opinion-f-35b-vert... -
(The comments aren't very positive. Is it too late to get our money back; Sale of Goods Act?)
EskimoArapaho said:
This issue is separate to the recent/current Marham resurfacing. It's to do with the hot exhaust destroying 'regular' airbase runway surfaces, and also - due to the chance of damage from the sh*t thrown up from anything but a perfectly engineered surface - complicating any forward deployment.
Found more here: http://aviationweek.com/defense/opinion-f-35b-vert... -
(The comments aren't very positive. Is it too late to get our money back; Sale of Goods Act?)
This has been known about for several years or more it's not new news. I can't seriously believe this is 'shock news' to anyone at Marham. The USN came up with a defined concrete pad criteria some time ago. Has to be be a massive single poor with no edges within a set radius and of high temp resistant concrete. Found more here: http://aviationweek.com/defense/opinion-f-35b-vert... -
(The comments aren't very positive. Is it too late to get our money back; Sale of Goods Act?)
It's why the USMC or RN/RAF won't ever be operating the F-35b from austere forward bases other than in the STORVL mode, which begs the questions - why bother with the stupid thing.
But, we are where we are.
aeropilot said:
This has been known about for several years or more it's not new news. I can't seriously believe this is 'shock news' to anyone at Marham.
Well, I presume the message took time to filter down to the poor grunt(s) affected. 
And they only found out they were getting the F-35 about a year ago, so the grunts probably weren't paying as close attention to the details as you. They were more worried about whether their job was disappearing for good.
EskimoArapaho said:
aeropilot said:
This has been known about for several years or more it's not new news. I can't seriously believe this is 'shock news' to anyone at Marham.
Well, I presume the message took time to filter down to the poor grunt(s) affected. And they only found out they were getting the F-35 about a year ago, so the grunts probably weren't paying as close attention to the details as you. They were more worried about whether their job was disappearing for good.
A Train?Interesting video clip from Farnborough - Spanish Harrier display, and the camera angle reveals the path of the jet efflux from the aft nozzles and the nose puffer jet
https://www.youtube.com/watch?v=ecpCPdUGnWk
Watching it makes me sad that thanks to the bloody stupid decision to virtually give ours away we can no longer do this ( not to mention any 'savings' made being gobbled up by having to operate Tornadoes with tanker support over Syria etc. instead of Harriers from a carrier just offshore )
https://www.youtube.com/watch?v=ecpCPdUGnWk
Watching it makes me sad that thanks to the bloody stupid decision to virtually give ours away we can no longer do this ( not to mention any 'savings' made being gobbled up by having to operate Tornadoes with tanker support over Syria etc. instead of Harriers from a carrier just offshore )
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