Does the F-35 making vertical flight look easy???

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popcorn

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Unread post19 Sep 2013, 09:50

munny wrote:It was a very short clip within the montage part towards the end of the video


I think it may have been the video released for the Centennial of Naval,Aviation.. IIRC someone had posted that the F-35 was being given too much prominence by the Navy and I responded,that it only had a few seconds exposure on the video :D
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Unread post19 Sep 2013, 10:24

Does it matter if the pirouette was slowed down or speeded up for the video? The manuever counts. Go here (to see part piro):

F-35B Vertical Landing + Short Take Off

RAN FAA A4G Skyhawk 1970s: https://www.faaaa.asn.au/spazsinbad-a4g/ AND https://www.youtube.com/channel/UCwqC_s6gcCVvG7NOge3qfAQ/
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Unread post19 Sep 2013, 14:30

spazsinbad wrote:Does it matter if the pirouette was slowed down or speeded up for the video? The manuever counts. Go here (to see part piro):

F-35B Vertical Landing + Short Take Off

http://www.youtube.com/watch?v=0J0czP7INMM


Nope, it will only matter in the future when it is loaded with several dozen CUDAs and executes it's famous Death Blossom maneuver
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Unread post16 Jul 2014, 00:27

A VERY EXCELLENT vonBuehler explanation by Wizzer (he must be good at it by now) about the 'control laws/incepts' for the F-35B in STOVL mode particularly PLUS the VL ease of same....

RAN FAA A4G Skyhawk 1970s: https://www.faaaa.asn.au/spazsinbad-a4g/ AND https://www.youtube.com/channel/UCwqC_s6gcCVvG7NOge3qfAQ/
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Unread post16 Jul 2014, 00:49

Just the Wizzer Audio ONLY attached now with extra bits about STOing from the various PLATforms and Ski Jump Testin'.
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F 35B STOVL Control & VLs & STOs & Ski Jumps Explained.wma [ 5.28 MiB | Viewed 4396 times ]

RAN FAA A4G Skyhawk 1970s: https://www.faaaa.asn.au/spazsinbad-a4g/ AND https://www.youtube.com/channel/UCwqC_s6gcCVvG7NOge3qfAQ/
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Unread post22 Jul 2014, 06:13

ACTIVE STICK & THROTTLE FOR F-35
16 Oct 2008 Joseph Krumenacker; NAVAIR Flight Controls / JSF Vehicle Systems

"JSF Active Inceptor System (AIS) Presentation Overview
A. Why & What of Active Inceptors:
– JSF Inceptor Overview & Architecture
– Reconfiguration for AIS Degraded Modes
– AIS Specification Issues

B. How have Active Inceptors been put to use:
– Current Uses of Active Capability
– Jetborne Advanced Modes Using Active Capability
– Lessons Learned

C. Conclusions [1Mb PDF of the 13.8Mb .PPT attached below]

• All JSF variants (CTOL, STOVL & CV) use identical AIS hardware & software.

How Is Active Capability Currently Used?
• Stick:
– Tailored STOVL pitch force characteristics
• wingborne vs. jetborne variations
• forward soft-stop(s) for vertical landing sink speed
– Pitch force feedback at higher AOA
– Roll force tailoring: left vs. right
– Roll force tailoring: CTOL vs. STOVL
– Increased force breakout for CV launch (pitch & roll)

AIS Lessons Learned
• Level 1 flying qualities for precise STOVL tasks are possible using a small, limited-displacement stick, due to the ability to set jetborne-specific stick characteristics without compromising wingborne flying qualities....

GRAPHIC: "Active Inceptor Overview
• As a system the AIS is partitioned into the following major elements – Electronics
• Processor modules, motor drives, interfaces to FCC / grips – Mechanics
• Gimbal assemblies, bearings, housings, seals & mountings"

Source: http://www.csdy.umn.edu/acgsc/mtg102/SubcommitteD/F35 AIS Krumenacker SAE 081016.ppt (13.8Mb)
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F-35 Active Inceptor Overview BAEsystems.gif
F35 AIS Krumenacker SAE 081016PPT.pdf
(1 MiB) Downloaded 6909 times
RAN FAA A4G Skyhawk 1970s: https://www.faaaa.asn.au/spazsinbad-a4g/ AND https://www.youtube.com/channel/UCwqC_s6gcCVvG7NOge3qfAQ/
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Unread post27 Jul 2014, 05:39

Sometimes I am in a rush and I missed this page (text) from the PDF above. Looks useful for SRVLs (I'll post it there also):
• Throttle:
– Variable aft & forward end-stops (e.g. STOVL mode is different from CTOL mode)
– AB gate (when STOVL system is not deployed)
– Launch gate (CV only)
– STOVL center detent (zero commanded acceleration)

– STOVL on-ground power braking force gradient

– Back-drive
• Auto-Throttle Approach (all variants)
• STOVL Decel-to-Hover
RAN FAA A4G Skyhawk 1970s: https://www.faaaa.asn.au/spazsinbad-a4g/ AND https://www.youtube.com/channel/UCwqC_s6gcCVvG7NOge3qfAQ/
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