A Wonderful Sunday
without operative datum shift
Oh, Q Cam, K gear.
Datum shift was a simple system which was nothing more than a bit of bike chain connecting part of the main undercarriage to the tailplane 'Hobson Motor' input system. As the landing gear extended, the CG move forward and the 'datum shift' chain automatically applied compensating nose-up tailplane incidence. Simple, and clever, like much of Mr Folland's finest!
Cam K varied the tailplane input value from the control column in a non-linear manner, so that the aircraft was less twitchy at small control deflexions whilst giving sufficient pitch control for landing; Q feel sensed dynamic pressure to increase stick force at high TAS. There was also a 'scissor restrictor' to prevent idiot senior officers pump-handling the control column so violently that the TPI became out of phase relative to the control column. A complete waste of time.....
All the analogue magic, cogs, springs and bits of chain of the well-loved G-nat longitudinal control system would these days be simple digital tweaks in a FBW system.
Then there was Fuse 13.....
Last edited by BEagle; 9th Feb 2013 at 21:31.
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Never did get to fly the Gnat; legs too long!
Victor B1a
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Memory Retention.
BEagle and Fantom,
Yippy, I love it.
BEagle did you nick your pilots notes?
Fantom prey do not go silent.
The oxygen (LOX) was indeed contained in a cryogenic sphere painted white. It was somewhere down the back.
I was amused when I did have a wet start and two ground crew did indeed put a shoulder each under the nose adopting the knees bend position and straightening up. Problem solved.
What might the OH&S tossers say to that?
keep 'em lit and stay safe.
Davey.
Per Ardua Ad Superanuation
Yippy, I love it.
BEagle did you nick your pilots notes?
Fantom prey do not go silent.
The oxygen (LOX) was indeed contained in a cryogenic sphere painted white. It was somewhere down the back.
I was amused when I did have a wet start and two ground crew did indeed put a shoulder each under the nose adopting the knees bend position and straightening up. Problem solved.
What might the OH&S tossers say to that?
keep 'em lit and stay safe.
Davey.
Per Ardua Ad Superanuation
Victor B1a
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Dressing.
Courtney,
Father once told me that ones choice of dress could be accomadated by ones tailor if he were a good one.
As for datum shift the whole gizmo was out somewhere in left field. Still it worked when one stuck to the cx. list.
Stay safe,
D.
Per Ardua Ad Lunchtime
Father once told me that ones choice of dress could be accomadated by ones tailor if he were a good one.
As for datum shift the whole gizmo was out somewhere in left field. Still it worked when one stuck to the cx. list.
Stay safe,
D.
Per Ardua Ad Lunchtime
Victor B1a
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Fuse13
bEagle et al,
I had forgotten fuse 13. It would make a great title for a story just like Catch 22.
Anyone out there ever remove fuse 13?
He He, A good way to get yourself posted to the right seat in a Victor B1a tanker. A truly frightful experience.
D.
Keep 'em lit.
I had forgotten fuse 13. It would make a great title for a story just like Catch 22.
Anyone out there ever remove fuse 13?
He He, A good way to get yourself posted to the right seat in a Victor B1a tanker. A truly frightful experience.
D.
Keep 'em lit.
BEagle did you nick your pilots notes?
The Reds once removed Fuse 13 and obtained very high roll rates. Normally the max aileron with gear up was 12°, limited by a protection circuit which included Fuse 13. Without the fuse, the full 15° was available, hence the astonishing formation twinkle rolls of the day!
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I vaguely remember watching TV programme sometime back about the Yellow Jacks ... where the pilot (might have even been Lee Jones) talked about the first time they did the Fuse 13 thing to improve the twinkle ... the banter went something like ... "we had the girls at Boscombe Down look at it for us ... but we just carried on".
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Dog Tired
Thanks BOAC. Yes it was Mod 399 I was thinking of.
Two more memories: remember the fire warning test? In front of your right knee, I think. My to-be brother-in-law was on the same course as I and he tested the fire sys then discharged the agent instead of cancelling the test. Poor show because it reqd eng change. After tea and biscuits with the boss, he was sent on his way and did the VERY SAME thing next trip.
I was climbing out and my man shouted 'emergency descent'. So, over on one's back, pull like anything and buffet down. In the de-brief he complimented my handling but added we could have achieved a higher rod with anything less than climb thrust, which I had left on.
Two more memories: remember the fire warning test? In front of your right knee, I think. My to-be brother-in-law was on the same course as I and he tested the fire sys then discharged the agent instead of cancelling the test. Poor show because it reqd eng change. After tea and biscuits with the boss, he was sent on his way and did the VERY SAME thing next trip.
I was climbing out and my man shouted 'emergency descent'. So, over on one's back, pull like anything and buffet down. In the de-brief he complimented my handling but added we could have achieved a higher rod with anything less than climb thrust, which I had left on.
Victor B1a
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That fuse.
BEagle,
I know. We all knew. Not to be attempted with full slipper tanks. Something to do with inertia perhaps.
I was unaware there was a prize for ground school at Valley. It is now perfectly
clear, given your posts, that I survived in a state of blissful ignorance.
Lucky me.
Keep them all lit,
D
I know. We all knew. Not to be attempted with full slipper tanks. Something to do with inertia perhaps.
I was unaware there was a prize for ground school at Valley. It is now perfectly
clear, given your posts, that I survived in a state of blissful ignorance.
Lucky me.
Keep them all lit,
D
Victor B1a
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One's Knees in the G-nat
Might you recall the fun one could have selecting a stud on the radio. If one could not count the studs by memory and moved the stick to have a look the machine could roll with considerable effect.
The G-nat was all to do with counting clicks .The go stop lever was close by the flaps. air brakes/ U/C using the same little lever. One only had to count to five. I think as one felt the clicks one was very happy. Eyes were out of the office where they,did indeed, belong.
D
Only straight and level if you lack brains.
The G-nat was all to do with counting clicks .The go stop lever was close by the flaps. air brakes/ U/C using the same little lever. One only had to count to five. I think as one felt the clicks one was very happy. Eyes were out of the office where they,did indeed, belong.
D
Only straight and level if you lack brains.
Victor B1a
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The Office.
Looks a bit different. Anybody got a shot of the famous black and yellow bung ( Port side above the go/stop levers)?
Davey.
Davey.
How on earth did you work out Joyce and Milligan?
I am interested. Do tell.
I am interested. Do tell.
Truth to tell I did not consciously go beyond the simple comparison of like with like, both being subtle, convoluted and arch-absurdist genii. (Especially Joyce, of course.)
Tickled tho' Davey that you happen to have samples of both
close to hand. (Tickled pink? Hug alternative?)
Spike once replied to my request for an autograph. He appeared on
TV with the Australian presenter Peter Luck. Luck said in conclusion "Well thanks for coming in Spike. What note should we end on?"
Spike sticks mug up closer to camera, pulling idiot face -
"A twenty dollar note! And send it to Spike Milligan at 393 Orange Grove Road, Woy Woy."
So I grabbed an envelope, wrote down the address, enclosed a note -
Dear Spike . .. . . . Your appeal for funds did not fall on deaf ears. Only yesterday I passed an audiogram. Please send your moniker in the enclosed SAE, then same may be stuck in battered copy of 'Puckoon'.
And an answer came directed in a writing unexpected - "Stick this in your Puck . . . Spike."
ps Another Sundee has passed here eastside, full of the pleasures of intercourse with family, friends, and a flier or two.
pps Seeing as how you are a relatively new sand-groper you might not yet have heard too many of the stories attached to the deep-seated suspicion in which eastern-staters have been held, dating back not long after the early days of settlement. Read Xavier Herbert's 'Disturbing Element' for some insights.
Pardon this digression from matters in hand. Dad used to describe the tight cockpit as needing a shoehorn to get in and a packet of salts to get out.
did the VERY SAME thing next trip.
(Bill Bailey DVDs been having a good airing at our place lately.)
Last edited by Fantome; 10th Feb 2013 at 15:40.
Victor B1a
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Odd One
Yes indeed, things in odd places.
I loved that tiny cockpit. Everything was a mere move of the hand away. Some machine.
D.
Anyone know where I might buy one?
I loved that tiny cockpit. Everything was a mere move of the hand away. Some machine.
D.
Anyone know where I might buy one?