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F35 C first deck landing

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F35 C first deck landing

Old 8th Nov 2014, 19:54
  #61 (permalink)  
 
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The F-35A emergency hook was tested very early on with AA-1 before it was destroyed by live fire testing some years ago now. There will be some info on this forum about the emergency hook. I'll post more soon. This very long link (could be shortened but life too short) will download a 12.5Mb PDF with this info in it:

http://www.google.com.au/url?sa=t&rc...56643336,d.aGc

“...AA-1 also completed a series of cable engagements to verify the design of the tail hook before its retirement after 90 flights....” Flight Testing the F-35 — Mark Ayton spoke with Jon Beesley, Lockheed Martin's Chief Test Pilot, before his retirement."
A now unavailable PDF from ESCO had the info and pics about this testing: http://esco.zodiac.com/downloads/doc...s_summer10.pdf

This PDF may be elsewhere now under a different URL.



Last edited by SpazSinbad; 8th Nov 2014 at 20:13. Reason: Pic x 2
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Old 8th Nov 2014, 20:21
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Stroll to this forum thread for more info: http://www.pprune.org/military-aviat...s-go-whoa.html

OLD F-35C Hook Design (AHS) Arrest Hook System


Last edited by SpazSinbad; 8th Nov 2014 at 20:28. Reason: hURL
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Old 8th Nov 2014, 22:00
  #63 (permalink)  
 
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The original of this photo was rotated 42 degrees hence the odd top right corner. It is useful because it shows the 4 sheaves on port side of USS Nimitz for the four cross deck pendants/wires with the vacant sheave between No.3 & No.4 for the Barricade (when required). This is the first arrest of CF-03 on 03 Nov 2014.






Original Pic below here: http://www.navy.mil/view_image.asp?id=187317
BIG PIC: http://www.navy.mil/management/photo...-ZZ999-037.JPG (1Mb)
"141105-O-ZZ999-037 PACIFIC OCEAN (Nov. 6, 2014) An F-35C Lightning II carrier variant joint strike fighter makes an arrested landing aboard the aircraft carrier USS Nimitz (CVN 68). The F-35 Lightning II Pax River Integrated Test Force from Air Test and Evaluation Squadron (VX) 23 is currently conducting initial at-sea trials aboard Nimitz. (U.S. Navy photo courtesy of Lockheed Martin by Andy Wolfe/Released)"

Last edited by SpazSinbad; 8th Nov 2014 at 22:14. Reason: Ist arrest txt add + pic LSO
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Old 8th Nov 2014, 22:49
  #64 (permalink)  
 
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OK, so the answer is that it's been tested and it works? That's really all I was asking for. Thank you and forgive me for wading through all the links and pretty diagrams.

So, the C model hook issues won't apply to the A model hook with any land-based cables. Is that right? And before you say it, yes I understand the difference - I flew plenty of airframes with hooks too.
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Old 8th Nov 2014, 22:50
  #65 (permalink)  
 
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Good to see the 'C' finally aboard the boat, lets hope the testing continues smoothly and swiftly!

-RP
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Old 8th Nov 2014, 22:56
  #66 (permalink)  
 
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I assume the hook on the 'A' has a less arduous task than that of the 'C', with the hook of the 'A' being designed for emergency use only? Assuming the less demanding nature of a RHAG engagement as opposed to a deck landing, I also assume the hook has to meet significantly lower loads and stresses?

-RP
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Old 8th Nov 2014, 23:00
  #67 (permalink)  
 
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Yeah, RP. Different hook, different cables. But emergency use often means "last chance" doesn't it? Sometimes no bolt option so it needs to be solid. That's why I was asking the question.
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Old 8th Nov 2014, 23:08
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I have never seen any issues with the F-35A emergency hook. The design was tested and verified with AA-1 (what is left out is that AA-1 went to Edwards for wet runway/brake testing so 'emergency hook function' was needed). If there were any I'll imagine we would know about it (as we seem to be aware of most negative things). Meanwhile a slideshow of good pics is here:

F-35C Carrier Tests | SLDInfo












Last edited by SpazSinbad; 9th Nov 2014 at 12:33. Reason: brak + xtra pic td
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Old 8th Nov 2014, 23:17
  #69 (permalink)  
 
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I agree, CM, emergency use certainly would have to include the 'last chance' scenario. I was thinking more along the lines of the extra length a runway allows for slowing the aircraft, rather than the short, abrupt stop that a deck landing entails. I guess when that is factored into the hook design, whilst it still has to be suitably robust, it allows a less demanding set of design requirements?

-RP
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Old 9th Nov 2014, 00:13
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Recent F-15C at a FOB: [no pics this time :-( ] http://www.usafe.af.mil/shared/media...-XB934-315.JPG





48th AEG takes critical step to validate NATO FOB 25 Apr 2014
Airman 1st Class Dana J. Butler 48th Fighter Wing Public Affairs


“4/25/2014 - SIAULIAI AIR BASE, Lithuania -- Airmen from the 48th Air Expeditionary Group recently took a trip to Amari Air Base, Estonia, to engage and certify the aircraft arresting system, taking a critical step toward validating the new NATO Forward Operating Base....


Two F-15C Eagles... staged at each end of the runway took turns engaging the barrier by taxiing at about 130 miles per hour with their tail hook lowered so as to hook onto the cable, which gradually slowed the aircraft to a safe, complete stop,...


According to Nicholson, the Air Force requires barrier engagement tests every 12 months if not engaged by a plane in a one-year time span. "The initial certification of the aircraft arresting system involves taking an active aircraft and approaching the cable at a designated speed based on the weight of the aircraft; it engages the cable, which will stop the aircraft in around 1,000 feet," said Nicholson....”
http://www.usafe.af.mil/news/story.asp?id=123408579


Old BAK-9 gear used to stop A4Gs in about 1,000-1,200 feet in short field arrest at NAS Nowra [usually one was part of OFS Operational Flying School] (except when on empty drops - no wheels - it was a bit shorter).

Last edited by SpazSinbad; 9th Nov 2014 at 06:04. Reason: JPG URL is GO! to a BIG PIC slow to download
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Old 9th Nov 2014, 00:18
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Dingle Dangle Dongle F-16 hook looks similar to F-35A emergency hook:
http://www.aerospaceweb.org/question...tailhook-1.jpg



Last edited by SpazSinbad; 9th Nov 2014 at 06:05. Reason: dongle
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Old 9th Nov 2014, 13:23
  #72 (permalink)  
 
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CF-05 at Optimum Angle of Attack (orange light - nosewheel): http://www.sldinfo.com/wp-content/up...2014/11/47.gif


F-35C Opt AoA: VX-23 'Salty Dogs' F-35C Update - LCDR Ken “Stubby” Sterbenz
VX-23 Ship Suitability Department Head - Paddles Monthly - Sept 2010
"...[The F-35C] will fly an on-speed AOA of 12.3 at 135-140 KCAS [Optimum AofA or Donut]. Due to the fact that flap scheduling is completely automatic, the cockpit was designed without a flaps switch...."
http://www.hrana.org/documents/Paddl...tember2010.pdf (1.3Mb PDF)


Last edited by SpazSinbad; 9th Nov 2014 at 13:39. Reason: AoA Optimum Quote
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Old 9th Nov 2014, 20:02
  #73 (permalink)  
 
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Isn't the F-15 a handsome jet? Nice picture.
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Old 9th Nov 2014, 21:31
  #74 (permalink)  
 
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Courtney,

My thoughts exactly.

Stealth has made a habit of making earlier-gen aircraft look dated (there's something 'VW Corrado' about the Tornado F.3, for instance...) but the Eagle remains a fine-looking bird.

C_C
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Old 9th Nov 2014, 21:46
  #75 (permalink)  
 
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The most honest aircraft I ever flew, CC.
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Old 9th Nov 2014, 22:29
  #76 (permalink)  
 
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On the presumption it's a recent pic, I'd say I'm getting my money's worth out of that particular jet given its BUNO of 1984.

Last edited by West Coast; 9th Nov 2014 at 23:52.
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Old 9th Nov 2014, 22:32
  #77 (permalink)  
 
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Can you ever see yourself being at the controls of another fast jet in the future, CM?

How big is the market for test pilots of military hardware?
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Old 9th Nov 2014, 23:51
  #78 (permalink)  
 
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I'll have a look up on the F-15 hook - pity about the gas bags though. Meanwhile on a thread about F-35C catting & flappin' as one newshound wag put it.... here are some nice outside helo views (SAR?) of current NIMITZ F-35C ops.


Last edited by SpazSinbad; 9th Nov 2014 at 23:52. Reason: UbendURL
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Old 10th Nov 2014, 03:58
  #79 (permalink)  
 
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Don't forget this hook and cable gig...

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Old 10th Nov 2014, 04:34
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Alternate without the yabba - just soothing crab music - click on the lower right rectangle to go to full screen:


Last edited by SpazSinbad; 10th Nov 2014 at 04:40. Reason: txt
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