Screensaver worthy Lightning shots

Discuss photos, special paintschemes and serial numbers of the F-35
  • Author
  • Message
Offline
User avatar

jetblast16

Forum Veteran

Forum Veteran

  • Posts: 610
  • Joined: 23 Aug 2004, 00:12
  • Location: USA

Unread post19 May 2019, 21:04

DxblLYSUwAAwZyU.jpg


DxblJo1UUAASqNM.jpg


ppwhg4pawfkcwrvx1xwh.jpg
Have F110, Block 70, will travel
Offline
User avatar

jetblast16

Forum Veteran

Forum Veteran

  • Posts: 610
  • Joined: 23 Aug 2004, 00:12
  • Location: USA

Unread post20 May 2019, 00:15

F-35_AAM_Launch.png
Have F110, Block 70, will travel
Online
User avatar

white_lightning35

Senior member

Senior member

  • Posts: 396
  • Joined: 18 Sep 2016, 03:07
  • Location: Home of nuclear submarines, engines, and that's about it.

Unread post20 May 2019, 03:10

jetblast16 wrote:
DxblLYSUwAAwZyU.jpg


DxblJo1UUAASqNM.jpg


ppwhg4pawfkcwrvx1xwh.jpg

I have a question: why is the f-35's landing gear so long compared to some other planes? I was looking at the f-22 and I couldn't help but notice how much shorter its landing gear is. Apologies if this is a dumb question.
Offline

SpudmanWP

Elite 5K

Elite 5K

  • Posts: 8381
  • Joined: 12 Oct 2006, 19:18
  • Location: California

Unread post20 May 2019, 03:43

The gear needs to be tall enough to wheel 2k class weaponry into the main bay.

Add to that the needed travel length involved in STOVL & Carrier ops.
"The early bird gets the worm but the second mouse gets the cheese."
Offline
User avatar

spazsinbad

Elite 5K

Elite 5K

  • Posts: 23089
  • Joined: 05 May 2009, 21:31
  • Location: ɐıןɐɹʇsn∀¯\_(ツ)_/¯
  • Warnings: -2

Unread post20 May 2019, 05:42

How woodjcha like to be an LSO wotchin' this fing cummin' atcha? HEAD for the HILLS Varmints! Max Arrest Landing WOT?!

More about gears for landing here: viewtopic.php?f=60&t=53476&p=377110&hilit=SCRIBD#p377110

PDF download: F-35 Landing Gear COMPLEX & ROBUST prn.pdf (140Kb)

download/file.php?id=25473 + 2 page extra PDF attached below now....
__________________________________________________________________________________

F-35C Drop Test F-35 Structural Design, Development, & Verification pp2.pdf (0.6Mb)
__________________________________________________________________________________

Nuther landing gears link: F-35 landing gear: viewtopic.php?f=60&t=52449
Attachments
F-35CmaxLandStoreArrestDropTestTIF.jpg
F-35C Drop Test F-35 Structural Design, Development, & Verification pp2.pdf
(597.72 KiB) Downloaded 119 times
RAN FAA A4G Skyhawk 1970s: https://www.faaaa.asn.au/spazsinbad-a4g/ AND https://www.youtube.com/channel/UCwqC_s6gcCVvG7NOge3qfAQ/
Offline
User avatar

spazsinbad

Elite 5K

Elite 5K

  • Posts: 23089
  • Joined: 05 May 2009, 21:31
  • Location: ɐıןɐɹʇsn∀¯\_(ツ)_/¯
  • Warnings: -2

Unread post25 May 2019, 16:18

F-35A USAF external weapons Al Dhafra AB, UAE May 2019: http://www.airforcemag.com/Features/Pub ... 0sized.jpg
Attachments
F-35A USAF external weapons Al Dhafra AB, UAE May 2019.jpg
RAN FAA A4G Skyhawk 1970s: https://www.faaaa.asn.au/spazsinbad-a4g/ AND https://www.youtube.com/channel/UCwqC_s6gcCVvG7NOge3qfAQ/
Offline

zhangmdev

Enthusiast

Enthusiast

  • Posts: 89
  • Joined: 01 May 2017, 09:07

Unread post25 May 2019, 17:07

white_lightning35 wrote: I have a question: why is the f-35's landing gear so long compared to some other planes? ...


http://www.internetlooks.com/f35bbf02wasp.jpg

Clearance for the Three-Bearing Swivel Nozzle during short takeoff, I think.
Offline
User avatar

spazsinbad

Elite 5K

Elite 5K

  • Posts: 23089
  • Joined: 05 May 2009, 21:31
  • Location: ɐıןɐɹʇsn∀¯\_(ツ)_/¯
  • Warnings: -2

Unread post25 May 2019, 18:51

zhangmdev wrote:
white_lightning35 wrote: I have a question: why is the f-35's landing gear so long compared to some other planes? ...

http://www.internetlooks.com/f35bbf02wasp.jpg
Clearance for the Three-Bearing Swivel Nozzle during short takeoff, I think.

The F-35B in STO mode FLIES OFF the deck - it does not rotate but lifts off in that attitude - so plenty of clearance AFAIK.
Attachments
F-35BwaspSTOflyOff.jpg
RAN FAA A4G Skyhawk 1970s: https://www.faaaa.asn.au/spazsinbad-a4g/ AND https://www.youtube.com/channel/UCwqC_s6gcCVvG7NOge3qfAQ/
Offline

zhangmdev

Enthusiast

Enthusiast

  • Posts: 89
  • Joined: 01 May 2017, 09:07

Unread post25 May 2019, 20:02

viewtopic.php?f=57&t=24438&start=75

It needs certain AoA to liftoff, short legs cannot provide enough clearance, like this one

https://www.airteamimages.com/pics/210/210778_800.jpg

F-35 landing gear looks very close to that of Lockheed ASTOVL Configuration 141B, X-35's looks even longer.
http://www.codeonemagazine.com/f35_arti ... tem_id=137
http://www.codeonemagazine.com/images/m ... 7_8729.jpg
Offline
User avatar

spazsinbad

Elite 5K

Elite 5K

  • Posts: 23089
  • Joined: 05 May 2009, 21:31
  • Location: ɐıןɐɹʇsn∀¯\_(ツ)_/¯
  • Warnings: -2

Unread post25 May 2019, 23:02

zhangmdev wrote:http://www.f-16.net/forum/viewtopic.php?f=57&t=24438&start=75
It needs certain AoA to liftoff, short legs cannot provide enough clearance, like this one
https://www.airteamimages.com/pics/210/210778_800.jpg
F-35 landing gear looks very close to that of Lockheed ASTOVL Configuration 141B, X-35's looks even longer.
http://www.codeonemagazine.com/f35_arti ... tem_id=137
http://www.codeonemagazine.com/images/m ... 7_8729.jpg

What am I or others supposed to glean from the first URL? The JPG URL shows a 'short leg Chinese conventional fighter rolling down the runway on three wheels taking off' I presume. It will rotate the nose UP & then fly away. You missed the procedure for the F-35B STO. The attitude you see is the attitude it has when it flies off the deck in STO configuration. The F-35B does not rotate to get airborne (unlike conventional aircraft). F-35B is in the take off attitude you see in photo.

Then there is a 'wall of text' at the second URL. What is important to this discussion there? Then the last URL for the JPG graphic shows an ASTOVL drawing (with canard?) which is how relevant (we can see the landing gear of the F-35B)?
______________________________________

Three STO techniques described: viewtopic.php?f=22&t=53673&p=382315&hilit=clearance+STOVL+test#p382315
Jumping Jack Flash
July 2014 unknown author AIR International F-35 Special Edition

"..."...There are three ways to conduct a short take off (STO) in the F-35B: stick STO, button STO – and auto STO. “That’s a completely automated way to STO the aircraft off the flight deck. You punch in a distance and the aircraft will auto rotate to its optimal fly-out condition. It’s all based on distance: we know where the aircraft is spotted [before it starts its take-off run] and where it should start its actual rotation,” explained Rusnok. “Unlike a Harrier, which launches off the end of the ship flat, the F-35 rotates at about 225 feet from the bow, sits on two wheels until it gets to the end of the ship and actually takes off, a much different process to a Harrier. From a pilot perspective, you lose some sight of the front of the ship; in a Harrier you can see all the deck. But that’s all part of optimising a 35,000lb aeroplane to get off the ship compared to the Harrier, which is only 16,000 to 25,000lb.”

With stick STO the pilot controls the take-off by pulling back on the stick, holding it there and then rotating to the optimal pitch angle to fly off. In button STO, the pilot uses a trim switch which rotates the aircraft when pushed in, activating it when the aircraft passes the yellow STO rotation line positioned 225 feet from the bow of the ship.

“That was a temporary marking applied on the flight deck for this trial and is now being permanently installed on the ship with lighting,” explained Rusnok. “It’s based on optimising the performance of the aircraft and its flying qualities, so we can get the aeroplane off with the maximum amount of nozzle clearance and performance. The STO line is our visual cue to either pull the stick aft or hit the button; or if you’re on automated STO you should start seeing the aeroplane’s flight controls moving by the line, otherwise the pilot can intervene and pull back on the stick. We’ve never had to intervene.”...

...One of the big test points for DT I was to ensure adequate nozzle clearance in all the different test conditions. The engine nozzle swings down and back up during the take-off in accordance with inputs from the aircraft control laws.

“It’s all automated,” said Rusnok. “The pilot is not in the loop whatsoever – either they’re pushing the button and letting the aeroplane do its own thing or pulling back on the stick to help it. Monitoring systems cue when something is wrong, so you have to rely on them to keep you safe because the flight controls are being moved unbelievably quickly.”

Maj Rusnok said the take-off was very much like that ashore, with very little sink off the end of the deck. “The aeroplane is ridiculously powerful in STOVL mode. Just raw, unadulterated power.”..."

Source: AIR International F-35 Special Edition July 2014
RAN FAA A4G Skyhawk 1970s: https://www.faaaa.asn.au/spazsinbad-a4g/ AND https://www.youtube.com/channel/UCwqC_s6gcCVvG7NOge3qfAQ/
Offline
User avatar

spazsinbad

Elite 5K

Elite 5K

  • Posts: 23089
  • Joined: 05 May 2009, 21:31
  • Location: ɐıןɐɹʇsn∀¯\_(ツ)_/¯
  • Warnings: -2

Unread post25 May 2019, 23:22

SCROLL DOWN the page at my link for STO technique above for more info and a PDF about it. More articles in PDF below.

F-35B STO & CVF Ski Jump INFO 30NOV17 PRN pp172.pdf download/file.php?id=26013 (11Mb)
Blue Sky OPS
26 April 2012 AIR International F-35 Lightning II

"...F-35B Take-off Options
The F-35B STOVL variant has a range of take-off options using different modes to suit the basing. Take-offs from a ship, with either a flat deck or one with a ski jump, are also possible with a mode for each scenario. These are short take-off scenarios that can be achieved at speeds as low as 50kts with a deck or ground run of no more than a 200ft (60m). In the same mode, a take-off as fast as 150 knots is possible if the weight of the aircraft requires that speed. If the aircraft is light it can take off at a slow speed and faster when heavy.

Take-off at speeds as low as 5, 10, 15, 20kts (9, 18, 27 and 36km/h) are also possible, each of which is effectively a vertical take-off while moving forward. There are different ways of rotating the aircraft in STOVL mode, including the usual ‘pull on the stick’. Other ways are by pressing a button or programming a ground distance required after which, the aircraft control law initiates the rotation and selects the ideal angle for climb-out...."

Source: http://militaryrussia.ru/forum/download ... p?id=28256 [12.5Mb F-35LightningII.PDF]
RAN FAA A4G Skyhawk 1970s: https://www.faaaa.asn.au/spazsinbad-a4g/ AND https://www.youtube.com/channel/UCwqC_s6gcCVvG7NOge3qfAQ/
Offline

quicksilver

Elite 2K

Elite 2K

  • Posts: 2614
  • Joined: 16 Feb 2011, 01:30
  • Warnings: 1

Unread post25 May 2019, 23:28

SpudmanWP wrote:The gear needs to be tall enough to wheel 2k class weaponry into the main bay.

Add to that the needed travel length involved in STOVL & Carrier ops.


X2
Offline

zhangmdev

Enthusiast

Enthusiast

  • Posts: 89
  • Joined: 01 May 2017, 09:07

Unread post26 May 2019, 00:12

spazsinbad wrote:What am I or others supposed to glean from the first URL? The JPG URL shows a 'short leg Chinese conventional fighter rolling down the runway on three wheels taking off' I presume. It will rotate the nose UP & then fly away. You missed the procedure for the F-35B STO. The attitude you see is the attitude it has when it flies off the deck in STO configuration. The F-35B does not rotate to get airborne (unlike conventional aircraft). F-35B is in the take off attitude you see in photo.

Then there is a 'wall of text' at the second URL. What is important to this discussion there? Then the last URL for the JPG graphic shows an ASTOVL drawing (with canard?) which is how relevant (we can see the landing gear of the F-35B)?

<...>


There are a couple of images of F-35B STO with quite high AoA in the first link. The point of the second image is if J-31 has a Three-Bearing Swivel Nozzle pointing downward, it would have no clearance to rotate and takeoff. The drawing of ASTOVL has a line drawn to show how the nozzle limit the angle it can rotate and how long and where the main landing gear should be. The 'wall of text' is just where that image comes from.

F-35B's design is unique, when the "doors" are open, nozzle is pointing downward, horizontal tails deflected at extreme position, with very high AoA, ground clearance is not a concern when designing the landing gear? Perhaps not a major limiting factor, but no effect at all?

https://i2.wp.com/www.defensemedianetwo ... C828&ssl=1
Offline
User avatar

spazsinbad

Elite 5K

Elite 5K

  • Posts: 23089
  • Joined: 05 May 2009, 21:31
  • Location: ɐıןɐɹʇsn∀¯\_(ツ)_/¯
  • Warnings: -2

Unread post26 May 2019, 01:29

I'm hoping you can realise that being cryptic is not helpful. Always best to leave clues for the reading use of an URL either copy/pasting a text quote from the URL page - or mention pictures on the page or post pictures - you get the picture?

Whatever the AoA that the F-35B Flies off the deck or runway at in STOVL mode was tested to extremes (according to the CLAW and weight of aircraft with all other variables). Did you read the three STO methods? A zoom lens photo of a STO is always dramatic whilst this was a test flight and we don't know the circumstances (unless you have those details?).

I'm not following your point about J-31 having a swivel nozzle - it does not have one so was designed as such? I'm hoping you see how I wasted my time reading 'the wall of text' when you could have mentioned the image was relevant somehow.

The ASTOVL drawing shows complete deflection which is NOT used for an F-35B STO. The first photo you used (which I uploaded next) shows the approximate angle of the 3BSN).
" 'zhangmdev' said: ... ground clearance is not a concern when designing the landing gear?..."

I agree. Ground clearance IS a concern under all circumstances when designing an aircraft, particularly for moving decks.
RAN FAA A4G Skyhawk 1970s: https://www.faaaa.asn.au/spazsinbad-a4g/ AND https://www.youtube.com/channel/UCwqC_s6gcCVvG7NOge3qfAQ/
Offline

SpudmanWP

Elite 5K

Elite 5K

  • Posts: 8381
  • Joined: 12 Oct 2006, 19:18
  • Location: California

Unread post26 May 2019, 06:01

STOVL takeoffs at rotation leave very little room between the nozzle and the deck. Now imagine that with a few 500 or 1000 lb JDAMs on the wing.
Attachments
2019-05-25 21_59_22-F-35B Ship Suitability Testing - YouTube.png
"The early bird gets the worm but the second mouse gets the cheese."
PreviousNext

Return to F-35 Spotting & Photography

Who is online

Users browsing this forum: No registered users and 1 guest