F-35C Lands at Lakehurst For Testing

[spazsinbad]

I think this illustration comes from an older version of the PDF mentioned many times on this thread. Graphic illustrates some other forces at work on the aircraft during arrest.

[alloycowboy]

Here is one for you spazsinbad, although you might need a Richard's Red after watching it.

NIGHT CARRIER LANDINGS , (Rock & Rolling Deck)

http://www.youtube.com/watch?v=bcxv2qBOXJw&feature=related

[spazsinbad]

Thanks, it is a great story and illustration of USN NavAv today. As mentioned earlier the CO does the right thing by the junior pilot. And let us hope that the F-35 DAS and HMDS issues are fixed to allow better night vision for night carrier landings as indicated elsewhere in this forum for the F-35B & F-35C.

[spazsinbad]

Back on page 3 of this thread about 'hook design issues and fixes' it perhaps is not clear exactly where the F-35C hook is located etc. From: http://www.codeonemagazine.com/images/m ... 7_6698.jpg

[spazsinbad]

Another 'carrier approach view' graphic showing wire numbers from:
http://www.globalsecurity.org/military/ ... erdeck.gif

[neptune]

.. And let us hope that the F-35 DAS and HMDS issues are fixed to allow better night vision for night carrier landings as indicated elsewhere in this forum for the F-35B & F-35C.

Sensor Fusion is the greatest "Hat Trick" that the F-35 has going for it! The individual systems on the "teens" have been evolved into one of the best day/ night visualation displays that exists in technology today. DAS(IR), EOTS and SAR fused into a 360 deg. field of view will give the aviator the clearest, brightess most informational display for landing on an a/c carrier that has ever existed or...... they can let JPALS and the auto-land function flying today in the "test" F-18 for the X-47B make the landing for them. Either way, "Coming Aboard" in the F-35 is going to be the best that aviation has ever achieved. Wish I could be there,

One hopes that the recent landings on the Wasp have "ship tested" JPALS with the "Bee" and further tests at PAX and Edwards will refine any additonal requirements for "auto-landing" on all F-35s.

[marksengineer]

I'm learning much. Interesting that the tailhook points are as different as the aircraft they are installed on. Think that since it's a time-limited part they would have standardized on one for all aircraft. Must be that the operating parameters are different enough to preclude that. Since the initial design failed wonder if they would test the different points from the F-18, F-14, etc.. on the F-35 to see which if any works while they're manufacturing the new design?

Think a telescoping hook would be a very complicated design. Whatever would power the extension and retraction would need either hoses or cables attached to the device and a means of isolating the cylinder or ball screw from the bending forces in the hook. A better solution may be to extend the hook whatever distance the airframe can accomodate. At most that probably would not buy you more than a hundreth of a second more for the cable to rise.

[spazsinbad]

Yes, the telescopic hook has many drawbacks but if we are talking about feet then perhaps there is an inkling of merit (depending on the actual hook length - but still a bad idea as I think I indicated? On previous page: "...I guess a telescopic hook would make the entire hook structure unnecessarily bendy so it is not a good idea eh....") Different aircraft have different length hooks and placement, all to buy time people are saying for the wire to spring back to some height above deck. I cannot say because my eye/brain does not work that quickly. Will be fascinating to see not just still photos of a hook/wire engagement but a super slomo video. I'll look.

Anyhoo, without being privy to USN aircraft maintenance manuals (but I'll look) AFAIK the hook is use limited. When an A4G hook reached the arrest limit (all recorded in aircraft logbooks) it would be replaced by a new one and the old one would disappear faster than a in a blink of an eye. There are (or used to be) plenty of old/new/used hooks for sale online.

Another bad idea I have is to mount the hook attachment point in reverse of present position. That way when the hook extends it will be offset aft by whatever the diff. ??? They don't pay me anough. Perhaps mounting the hook that way (on a strong pivot of course) it may be possible to then extend the hook length forward. I must be 'Heath Robinson II" (the Rube Goldberg of his day).

http://www.chrisbeetles.com/gallery/ima ... 3231-b.jpg

[spazsinbad]

A look at the A-4 Hook + text from an ex-A4G maintainer who had to: “...reproduce a radius on the toe of the hook with a 'rasp' after frequent contact with the deck wore it to a knife edge which, to the consternation of the 'Stokers' responsible for the 'trap', were required to replace arrestor wires which had been cut.”

http://www.arcforums.com/forums/air/ind ... 9830&st=60

http://i278.photobucket.com/albums/kk10 ... 530509.jpg

[spazsinbad]

Great overview of all the 'bibs & bobs' of NavAv (in the USN). At around the 13 minute 35 second mark there is a short segment zoomed showing the arrestor wire being snagged. I'll try to get a screenshot. One of wire support (+ LSOs).... then wire snag. Now a wire trampled.

Flight Deck Safety Awareness Video Guide From: NavalSafetyCenter | Dec 15, 2011

http://www.youtube.com/user/navalsafety ... w_bgL1MwUQ

"The Naval Safety Center has provided a printed magazine on flight-deck safety for many years. A few years ago, we produced this video to be used in the training of flight-deck personnel. Although a few years old, the information still is valid and is a good tool as a refresher for those familiar with flight-deck operations or for new people not accustomed to the flight deck. This video has been distributed on CD-ROMs for several years, but it is now being made available on the internet."

[spazsinbad]

Wire Trample Video Clip at one/eigth speed from above video + screenshot of trample instant. Right click on the attached .WMV video screen (when playing) to select 'ZOOM' 'full screen' for the full CineRama Experience.

Now on Utube also:

Arrestor Wire Trample Behaviour HD at one/8th Speed

http://youtu.be/Y-jVVj73Xg0

[spazsinbad]

F-35 Lightning II Program Status and Fast Facts 01 Nov 2011

http://f-35.ca/wp-content/uploads/2011/ ... 1-2011.pdf

"* As of Oct. 31, F-35C jets had executed 59 successful catapult launches and three arrestments." QUE?

[popcorn]

F-35 Lightning II Program Status and Fast Facts 01 Nov 2011

http://f-35.ca/wp-content/uploads/2011/ ... 1-2011.pdf

"* As of Oct. 31, F-35C jets had executed 59 successful catapult launches and three arrestments." QUE?

Those have to be the 3 arrestments made during early tests BEFORE the decision was made to redesign the tailhook.

[spazsinbad]

OLD wire tech with supports and a familiar story perhaps.

AM-1 Mauler: http://www.codeonemagazine.com/gallery_ ... em_id=1614
The Martin AM-1 carrier-based ground attack aircraft entered Navy service in 1948 after some teething problems during development. The Mauler had four 20 mm cannons and fifteen underwing and fuselage hardpoints for weapons. In 1950, the 151 aircraft built were reassigned to Naval Reserve squadrons, as the Navy had chosen the AD Skyraider as its primary carrier attack aircraft. Fifteen Maulers designated AM-1Q were later modified for electronic warfare. The Mauler was retired in 1953.

BIG PIC: http://www.codeonemagazine.com/images/m ... 7_8609.jpg

[spazsinbad]

An arrest video at one-eigth speed. Tried to slow it down more without success. Anyway this arrest would be an 'ideal' example with the main wheels not touching the arrested wire before the hook gets there. As one can imagine though there are many, many variations from 'taxi 1' (main wheels or all wheels touchdown before number one wire to then 'taxi' to an arrest) to main wheels hitting or touching down before the arrest wire or subsquent arrest wire to cause perhaps a 'trample' issue but - whatever.

Same video - same speed - Utube:

Arrestor Wire Arrest 1/8th speed

http://www.youtube.com/watch?v=pCzO4G8wbXk