F-35 and Airshows

Discuss the F-35 Lightning II
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geforcerfx

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Unread post25 Sep 2018, 00:55

the Canadian performance was posted a few pages back.
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steve2267

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Unread post25 Sep 2018, 02:03

geforcerfx wrote:the Canadian performance was posted a few pages back.


That's what I thought.
Take an F-16, stir in A-7, dollop of F-117, gob of F-22, dash of F/A-18, sprinkle with AV-8B, stir well + bake. Whaddya get? F-35.
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strykerxo

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Unread post25 Sep 2018, 04:41

At mark 1:40s there is a slight bobble, is this the plane departing and the FCS controlling or the pilot compensating.
Sorry, if already commented on.
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citanon

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Unread post25 Sep 2018, 05:53

marsavian wrote:The Canada CIAS2018 full display with a close-up of the excellent yaw control at low speed and high AoA at 5mins 10secs.



They need to come up with a snappy name for what's becoming the F35 signature move.
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Unread post25 Sep 2018, 07:40

strykerxo wrote:At mark 1:40s there is a slight bobble, is this the plane departing and the FCS controlling or the pilot compensating.
Sorry, if already commented on.

IF the aircraft departs at such a high airspeed at that time we are all in trouble - head for them thar hills yonder....
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gta4

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Unread post25 Sep 2018, 11:40

citanon wrote:
marsavian wrote:The Canada CIAS2018 full display with a close-up of the excellent yaw control at low speed and high AoA at 5mins 10secs.



They need to come up with a snappy name for what's becoming the F35 signature move.


I believe that is called J turn
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strykerxo

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Unread post25 Sep 2018, 20:20

spazsinbad wrote:
strykerxo wrote:At mark 1:40s there is a slight bobble, is this the plane departing and the FCS controlling or the pilot compensating.
Sorry, if already commented on.

IF the aircraft departs at such a high airspeed at that time we are all in trouble - head for them thar hills yonder....


I have seen the bobble in other videos, it just looks abnormal. Maybe not departing, but a hiccup.
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marsavian

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Unread post25 Sep 2018, 21:20

It's probably the FCS adjusting automatically as they have tweaked the software so there are no uncontrollable surprises. Even recovery from stall is graceful and ends in horizontal flight. The F-35 can be flown with abandon.
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Unread post25 Sep 2018, 21:34

How do you know it isn't just the pilot letting off backpressure to reduce AoA?
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Gums

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Unread post25 Sep 2018, 21:50

Salute!

Yes, Mars, likely FLCS control laws re: pitch or roll rates.

And as Spurts observes, pilots still matter.

Could also just be pilot easing off the controls if he didn’t like rates.

The VooDoo I flew a hundred years ago had a stick pusher that moved the stick forward using 28 pounds or s and normally would jerk the stick outta your hand. It activated on both pitch rate and AoA.

Viper rate limiters were very obvious.

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lbk000

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Unread post26 Sep 2018, 01:40

strykerxo wrote:At mark 1:40s there is a slight bobble, is this the plane departing and the FCS controlling or the pilot compensating.
Sorry, if already commented on.

I first noticed it in Flynn's PAS routine, it almost looked like he was being sloppy with the maneuvers at first, such that he had to put in corrections. But I seem to recall someone noting that the F-35's FCS is designed such that it flies on rails, precisely going where the VVI is pointing, so I wouldn't be surprised if the aircraft is just making a rapid "fishtail" to cancel out any residual rate and arrive at optimal AoA as quickly as it can when exiting a maneuver.

I personally think the "bumps" make the F-35's demos look crisp compared to other aircraft.
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geforcerfx

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Unread post26 Sep 2018, 05:16

SO the first Canadian video was his practice flight, the P-51 hadn't arrived yet and he was basically just out practicing maneuvers getting his airspace down.

here is the same camera guy and the full demo
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Unread post26 Sep 2018, 06:18

Looks like the PARIS Airshow graphic: https://edition.cnn.com/2018/09/25/poli ... index.html
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sferrin

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Unread post27 Sep 2018, 23:14

geforcerfx wrote:SO the first Canadian video was his practice flight, the P-51 hadn't arrived yet and he was basically just out practicing maneuvers getting his airspace down.

here is the same camera guy and the full demo


(1:22) DAMN son. :shock: That little slide there at 2:55 is pretty sweet too.
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Unread post14 Oct 2018, 08:27

1995/2003 F-16A/B flight manual p.61 this thread: viewtopic.php?f=22&t=24622&p=401261&hilit=Difficult#p401261

OUT OF 1984 USAF F-16A/B Flight Manual PDF (10.6 Mb) http://aviationarchives.blogspot.com/20 ... anual.html
"A copy of the USAF Flight Manual TO 1F-F16A-1 for the General Dynamics F-16A/B Fighting Falcon USAF/EPAF aircraft. This manual is dated 10 December 1984."

PDF: http://www.filefactory.com/file/1bsudsm ... SAF%29.pdf
OR
(best download speed): https://www.docdroid.net/bTPbYhQ/f-16ab ... l-usaf.pdf (10.6Mb)
A4G Skyhawk: www.faaaa.asn.au/spazsinbad-a4g/ & www.youtube.com/channel/UCwqC_s6gcCVvG7NOge3qfAQ/videos?view_as=subscriber
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