Originally Posted by Fishtailed
(Post 9733639)
We'd just put loads of new FTI SUMS stuff on an ADV at Conningsby and it swept the wings with flaps down- didn't fly for years:{
Leon, that stick's never been in an aircraft:8 Jayviator, have you got an NHC? |
Well, I followed what GR4techie said and guess what? it worked! so now I can put them into the max reheat position, combat is another matter, the same technique does not seem to work but I am not to bothered about that, I am happy to have it in max reheat.
Thank you GR4techie for that most helpful info! I am still curious about those other controls on the throttles though! |
Originally Posted by zero1
(Post 9732726)
The leading edge of the fin was the HF-SSB antenna that connect the HF feed to the airframe ( I would need to see a photo to confirm). The photo of the CSAS is standard together with the AFDS (autopilot).
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Originally Posted by Jayviator
(Post 9741669)
Well, I followed what GR4techie said and guess what? it worked! so now I can put them into the max reheat position, combat is another matter, the same technique does not seem to work but I am not to bothered about that, I am happy to have it in max reheat.
Thank you GR4techie for that most helpful info! I am still curious about those other controls on the throttles though! |
Originally Posted by Photoplanet
(Post 9759983)
-For Combat, is it not required to lift the throttle at its forward limit, then push it forward further? It has been many years since I worked on the Tornado F3 at Leuchars, but lifting the throttle lever seems to ring a bell...
Not in the GR1/4. Leon mentioned rocking a switch on the end of the throttles to select which radio, but that wasn't the case with the GR, the sector is on the stick. The red button on the stick top when fitted to the GR was (is) the bomb release button. |
I remember back in my early engineering days studying the Tornado's CSAS, It's an analog fly by wire system with mechanical reversion in the pitch plane. It was a marvel of analog engineering with a lot of fail tolerant/graceful degradation and analog voting to eliminate transients and nuisance warnings. Douglas had a similar but not nearly as elegant system they called Stability and Control Augmentation System which was used on the YC-15 prototype and was the baseline for the C-17 design before they switched to a digital quadruplex fly-by-wire system during the middle of the C-17's development.
And you might try lifting the throttle handles to move them to the "combat" position. |
KenV
The Tonka was a joy! FBW and fully integrated TFR Nav/Attack. :D A strange thing with the T.Birds is that they seem to have a different pitch response from the rear seat control input. Certainly, I found that circuit work from the back seat of the T.Bird required a greater degree of finesse to avoid a stable PIO. ;) A regular thing was the combination of degraded system approaches for training. A back seat, 67 wing, mech-mode, PAR was a good one!:ok: Of course, rollers (touch and go) from the rear are fun with no forward visibilty, as is demo dive/strafe, in the old jets with no forward sighting! OAP |
Ahh yes, the joys of backseat strafe - a careful selection of canopy rivet vs bush of the day.
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Originally Posted by Just This Once...
(Post 9760261)
Ahh yes, the joys of backseat strafe - a careful selection of canopy rivet vs bush of the day.
OAP |
I never realised that the system was actually regularly degraded to Mech Mode in flight. I thought it was a last resort and was a pig to fly in that mode!
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Originally Posted by Dark Helmet
(Post 9760694)
I never realised that the system was actually regularly degraded to Mech Mode in flight. I thought it was a last resort and was a pig to fly in that mode!
OAP |
I heard Mech mode described as flying a whale
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Ah well, The CSAS could be degraded in flight to TRAINING Mech Mode which was not as bad as full Mech Mode. That was only practiced in the sim.
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Timelord
As I recall, the "training" entry into mech mode allowed the full up and running CSAS system to provide the mech mode system functionality, while keeping the CSAS system still powered but not contributing anything more than mech mode. This allowed the CSAS to remain effectively undisturbed although, as I understood it, giving mech mode function. I do not recall a "not as bad as" factor? Can you refresh me?:ok: OAP |
I think that you still have the rudder in Training Mech Mode whereas genuine Mech mode is just the tailerons.
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^ yep, hence 20kt x-wind limit for trg mech mode and 10kt limit for real.
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I'm confused by some of the later posts on "mech mode". I never flew a Tornado but my understanding of the system was that only the pitch plane had mechanical reversion. Is "mech mode" something different?
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Mech mode is mechanical control rods (complete with disconnects and crushable strut) between the stick and the tailerons, so providing roll and pitch. Normally the roll axis is augmented by spoilers so the reversion to mech mode looses some roll authority well as the rudder.
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Great replies Guys. :ok: I always thought the CSAS was a very good system. Apart from BITE failures, it was very reliable. I think I only had one or two minor in-flight degrades in nearly 1500 hours. :ok:
OAP |
Speaking as someone who spent many hours rigging the mechanical run, can anyone tell me if there was there ever a consideration to make Tornado fully FBW? Given the reliability of the quadruplex system, was it an opportunity missed to remove all mechanical runs?
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