But apart from that...
Ecce Homo! Loquitur...
Thread Starter
But apart from that...
Flight International 10-16 June: The Great Survivor (article on MRA4):
.....One well-publicised recent change to the aircraft was the introduction of a stability augmentation upgrade, achieved by computer modification and actuators, as an original speed trim system failed to work as well as expected. "We've added an inner loop [computer system] that works the elevator really hard, so the pilot thinks he's got a 'golden arm', says Harland. "It's making very rapid, very small corrections to the elevator, so the aircraft stays at the same place on the horizon without wavering around"
Also exposed during the flight test programme and the final stability element to be tackled, Harland says that the aircraft's stall "is not as pronounced as the certification agents would like it to be", a potential problem for an aircraft which could spend part of it's operational life hunting for submarines at an altitude of 200ft.
"Using the same angle of attack sensors and gyros we've added the capability to warn the pilot that he is approaching a stall, by shaking the stick. If he persists in pulling the nose back we also have a stick pusher". Software releases have been made during this year, and Harland says, "the pilots are pretty pleased with that, it's virtually carefree [handling] because it allows prompt recovery from the stall."
The aircraft's aileron rigging has been adjusted, so that the port and starboard ailerons do not move by the same amount, avoiding the onset of adverse yaw. BAE also has yet to prove some changes on roll authority, and is to investigate whether it needs to add more vortex generators/stall fences on the outer wing to provide additional lift in a slower speed regime..........
----------------------------------------------------
Elsewhere in the issue:
Thales to offload Searchwaters: Thales is in discussion with possible users of surplus maritime search radars acquired for the UK's BAE Systems Nimrod MRA4 surveillance aircraft, with remanufactured Lockheed P-3 Orions having emerged as lead candidates for the system. The UK Ministry of Defence ordered 21 Searchwater 2000 MR radars for it's MRA4 fleet in 19996, but has so far signed for a production order of just 9 of the aircraft. It also has options to productionise its three development aircraft.
P-8A power-on set for this week: Boeing plans to reach the power-on milestone for the US Navy P-8A Poseidon this week...... Boeing is developing the 737-800ERX based P-8A to enter service in 2013 to replace the Lockheed P-3C Orion fleet, although the schedule could be accelerated by one year....
.....One well-publicised recent change to the aircraft was the introduction of a stability augmentation upgrade, achieved by computer modification and actuators, as an original speed trim system failed to work as well as expected. "We've added an inner loop [computer system] that works the elevator really hard, so the pilot thinks he's got a 'golden arm', says Harland. "It's making very rapid, very small corrections to the elevator, so the aircraft stays at the same place on the horizon without wavering around"
Also exposed during the flight test programme and the final stability element to be tackled, Harland says that the aircraft's stall "is not as pronounced as the certification agents would like it to be", a potential problem for an aircraft which could spend part of it's operational life hunting for submarines at an altitude of 200ft.
"Using the same angle of attack sensors and gyros we've added the capability to warn the pilot that he is approaching a stall, by shaking the stick. If he persists in pulling the nose back we also have a stick pusher". Software releases have been made during this year, and Harland says, "the pilots are pretty pleased with that, it's virtually carefree [handling] because it allows prompt recovery from the stall."
The aircraft's aileron rigging has been adjusted, so that the port and starboard ailerons do not move by the same amount, avoiding the onset of adverse yaw. BAE also has yet to prove some changes on roll authority, and is to investigate whether it needs to add more vortex generators/stall fences on the outer wing to provide additional lift in a slower speed regime..........
----------------------------------------------------
Elsewhere in the issue:
Thales to offload Searchwaters: Thales is in discussion with possible users of surplus maritime search radars acquired for the UK's BAE Systems Nimrod MRA4 surveillance aircraft, with remanufactured Lockheed P-3 Orions having emerged as lead candidates for the system. The UK Ministry of Defence ordered 21 Searchwater 2000 MR radars for it's MRA4 fleet in 19996, but has so far signed for a production order of just 9 of the aircraft. It also has options to productionise its three development aircraft.
P-8A power-on set for this week: Boeing plans to reach the power-on milestone for the US Navy P-8A Poseidon this week...... Boeing is developing the 737-800ERX based P-8A to enter service in 2013 to replace the Lockheed P-3C Orion fleet, although the schedule could be accelerated by one year....
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Searchwater is a damn good radar -
dunno about having magic pixies wiggling the ailerons and playing arm wrestle with the pilots, but the radar's top notch...
...Even if the IFL bears an uncanny resemblance to the beast in the Lunar modules that generated all those alarms as Eagle got maxed out by the landing radar....I never could understand why we AEOps - ooops - WSOps now - had to memorise what 1508 meant, when a few more characters would allow - say - TITSUP to be displayed.
dunno about having magic pixies wiggling the ailerons and playing arm wrestle with the pilots, but the radar's top notch...
...Even if the IFL bears an uncanny resemblance to the beast in the Lunar modules that generated all those alarms as Eagle got maxed out by the landing radar....I never could understand why we AEOps - ooops - WSOps now - had to memorise what 1508 meant, when a few more characters would allow - say - TITSUP to be displayed.
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The aircraft's aileron rigging has been adjusted, so that the port and starboard ailerons do not move by the same amount, avoiding the onset of adverse yaw.
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Wow, well I never, who would of thought that differential aileron could be used to prevent adverse yaw, they'll be having the leading edge of the upgoing aileron projecting below the wing next, they might even get the pilot to co-ordinate movement of his foot rests with that of the yoke.
What's the betting that some Warton Wunderkinde is working on getting rid of ailerons all together by relying on activley twisting the wing structure on command from the pilot's yoke movements, at least it'll give him something to do between pies.
What's the betting that some Warton Wunderkinde is working on getting rid of ailerons all together by relying on activley twisting the wing structure on command from the pilot's yoke movements, at least it'll give him something to do between pies.
Ecce Homo! Loquitur...
Thread Starter
What's the betting that some Warton Wunderkinde is working on getting rid of ailerons all together by relying on activley twisting the wing structure on command from the pilot's yoke movements
I believe this now referred to in BAE as "Adaptive Wing Technology".
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The UK Ministry of Defence ordered 21 Searchwater 2000 MR radars for it's MRA4 fleet in 19996, but has so far signed for a production order of just 9 of the aircraft. It also has options to productionise its three development aircraft.
watp,iktch
You should read the full story in `Flight Int`, and then relate it to the thread about `management drivel`!
A well publicised problem about long.stab- upped the gains-should have been sorted years ago.`golden-arm` ?should be a `golden -rivet` up your a%$£!
Stalling- now got a `stick -pusher`- should have been...........years ago ; every Cessna has a buzzer,or a big red light,or horn,if that don`tell you,a clip around the ear from the `ginger-beer` should do the trick ! A few more `wedges` on the leading edges should do the trick.
Adverse aileron yaw;should hav.............ago..err, doesn`t every Tiger Moth have differential ailerons,err who made the TM ? ERR ,De H, makers of the Comet,father of the Nimrod; A bigger slip-ball would help ,or another `clip` around the ear!
Icing--Couldn`test the system at full power on the ground,so the answer is `more jubilee` clips`(at BAe markups,probably £1000 a time.
Why did they stop at the Azores and Bermuda on the way to Tennessee for icing- Why not Tank to Canada in the first place...that would prove that system...or maybe BAe couldn`t put their faith in ???????
No wonder it`s only 92 rpt 92 months behind schedule if a few minor problems seem to tax their collective brain-power ,and MoD deserve the biggest kick in the A%^$ FOR ALLOWING IT TO GO ON FOR SO LONG!!!!
A well publicised problem about long.stab- upped the gains-should have been sorted years ago.`golden-arm` ?should be a `golden -rivet` up your a%$£!
Stalling- now got a `stick -pusher`- should have been...........years ago ; every Cessna has a buzzer,or a big red light,or horn,if that don`tell you,a clip around the ear from the `ginger-beer` should do the trick ! A few more `wedges` on the leading edges should do the trick.
Adverse aileron yaw;should hav.............ago..err, doesn`t every Tiger Moth have differential ailerons,err who made the TM ? ERR ,De H, makers of the Comet,father of the Nimrod; A bigger slip-ball would help ,or another `clip` around the ear!
Icing--Couldn`test the system at full power on the ground,so the answer is `more jubilee` clips`(at BAe markups,probably £1000 a time.
Why did they stop at the Azores and Bermuda on the way to Tennessee for icing- Why not Tank to Canada in the first place...that would prove that system...or maybe BAe couldn`t put their faith in ???????
No wonder it`s only 92 rpt 92 months behind schedule if a few minor problems seem to tax their collective brain-power ,and MoD deserve the biggest kick in the A%^$ FOR ALLOWING IT TO GO ON FOR SO LONG!!!!
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Nothing as flash and up to date as Sinclair ZX81 I suspect, although the wobbly ram pack issue seemed to have been incorporated....
...but a HUGE improvement in comparison to trying to reprogram ESM.... that thing should have come with a mini hifi (to play 'lift music' at you while you waited - sometimes until the wheels chirped!)
Dave
...but a HUGE improvement in comparison to trying to reprogram ESM.... that thing should have come with a mini hifi (to play 'lift music' at you while you waited - sometimes until the wheels chirped!)
Dave
