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Search: Posts Made By: Gravelbelly
Showing results 1 to 35 of 43
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Forum: Military Aviation
12th Jul 2012, 13:00
Replies: 16
Views: 6,130
Posted By Gravelbelly

Good luck buying an APG-77 - it's a 1990s design...

Good luck buying an APG-77 - it's a 1990s design running 90s/00s hardware, the F-22 production line is done, the last radar will have been completed a couple of years back, and the F-22 Common...
Forum: Military Aviation
7th May 2012, 12:35
Replies: 32
Views: 15,506
Posted By Gravelbelly

You say the nicest things :8 It's somewhat...

You say the nicest things :8

It's somewhat dated - I can remember being given one with a cutaway, so that we could drive it through a demo for the 1985?/86? Paris and Farnborough airshows (I was...
Forum: Military Aviation
19th Apr 2012, 12:22
Replies: 1,802
Views: 387,398
Posted By Gravelbelly

Errr... I think that is JF's point - STOVL...

Errr... I think that is JF's point - STOVL aircraft can launch and recover in sea states that would stop CATOBAR flying
Forum: Military Aviation
15th Mar 2012, 12:59
Replies: 43
Views: 11,451
Posted By Gravelbelly

I rather suspect that CosmicComet is not a native...

I rather suspect that CosmicComet is not a native English speaker :rolleyes:

Tell you what, why don't you write a lucid, grammatically correct, and relevant article in Spanish, and we'll get a...
Forum: Military Aviation
20th Feb 2012, 12:30
Replies: 11
Views: 2,923
Posted By Gravelbelly

Helimeet 86 or something? As a young TA lad,...

Helimeet 86 or something?

As a young TA lad, I was one of the two pipers who played at the dinner on the Saturday night; IIRC the "free bar" provided by Boeing had its budget of £3k blown on the...
Forum: Military Aviation
17th Feb 2012, 12:08
Replies: 19
Views: 3,893
Posted By Gravelbelly

:D Avoiding your suggestion of "first...

:D

Avoiding your suggestion of "first strikes" (hmmm - decapitation)...

Let's see. Every major city, most large towns have massive casualties and are rendered economically useless. EMP effects...
Forum: Military Aviation
9th Feb 2012, 08:37
Replies: 215
Views: 55,586
Posted By Gravelbelly

No, I'm not. JFZ is correct when he says "all...

No, I'm not. JFZ is correct when he says "all other things being equal, bigger is better"; the problem is that they generally aren't equal. Engineering is about tradeoffs and optimizations - you...
Forum: Military Aviation
8th Feb 2012, 08:41
Replies: 215
Views: 55,586
Posted By Gravelbelly

It depends :) What radar mode are you...

It depends :)

What radar mode are you operating in? What tradeoffs have you made between pulse duration, duty ratio, scan speed? What tradeoffs have you made in antenna setup for sidelobe...
Forum: Military Aviation
7th Feb 2012, 17:03
Replies: 215
Views: 55,586
Posted By Gravelbelly

True - I was focussing on the "Tx power ** 4"...

True - I was focussing on the "Tx power ** 4" bit. You can do cute stuff with the same-sized antenna to give you better directional gain (see "not all of the elements will radiate with the same...
Forum: Military Aviation
7th Feb 2012, 12:42
Replies: 215
Views: 55,586
Posted By Gravelbelly

Errrr.... for clarity. Radar range (in the...

Errrr.... for clarity.

Radar range (in the physics sense) is driven by the total power output of the transmitter, the reflectivity of the target, and the sensitivity of the receiver - not by the...
Forum: Military Aviation
1st Feb 2012, 12:44
Replies: 215
Views: 55,586
Posted By Gravelbelly

What, you mean like the Tiger helicopter? ...

What, you mean like the Tiger helicopter?

:ok:
Forum: Military Aviation
1st Feb 2012, 12:39
Replies: 215
Views: 55,586
Posted By Gravelbelly

That's an interesting statement, seeing as the...

That's an interesting statement, seeing as the Typhoon AESA programme is fifteen years old if you count AMSAR. Amusingly, Thomson-CSF (at the time, now Thales) has been a partner in GTDAR for most of...
Forum: Military Aviation
21st Nov 2011, 13:44
Replies: 27
Views: 5,245
Posted By Gravelbelly

Mach Two - I was working on the project at the...

Mach Two - I was working on the project at the time....

...apparently, with the Germans narked at workshare (the FCS, engines, radar, and airframe all by now being British-led) they took on the...
Forum: Military Aviation
11th Oct 2011, 13:10
Replies: 31
Views: 8,638
Posted By Gravelbelly

There were a fair few ASICs across the design -...

There were a fair few ASICs across the design - and some got completed earlier than others. While the design started around then, some of the processors didn't get completed for another couple of...
Forum: Military Aviation
10th Oct 2011, 22:00
Replies: 31
Views: 8,638
Posted By Gravelbelly

Rubbish, it was the 1990s (I was there designing...

Rubbish, it was the 1990s (I was there designing it, I can assure you that we were pushing the boundaries of what the ASIC foundries could offer us in 1995) and that was just Tranche 1. The Tranche 2...
Forum: Military Aviation
1st Sep 2011, 22:24
Replies: 78
Views: 10,340
Posted By Gravelbelly

The US didn't give the death sentence to Robert...

The US didn't give the death sentence to Robert Hanssen, Aldrich Ames, Jonathan Pollard, or the Walkers - and their crimes were far more serious.
Forum: Military Aviation
6th Mar 2011, 19:44
Replies: 37
Views: 8,386
Posted By Gravelbelly

You did indeed - I carelessly assumed you were...

You did indeed - I carelessly assumed you were part of the ill-informed "A-S was an afterthought bolt-on" brigade, and not (clearly) far more aware of the ins and outs of the project management than...
Forum: Military Aviation
4th Mar 2011, 13:39
Replies: 37
Views: 8,386
Posted By Gravelbelly

...And I was under the impression that AST.403...

...And I was under the impression that AST.403 and SR(A) 414 explicitly involved a replacement for the Jaguar...



While I agree that the primary driver was to support A-A, I don't think that...
Forum: Military Aviation
3rd Mar 2011, 22:35
Replies: 37
Views: 8,386
Posted By Gravelbelly

Your time on the project was presumably after...

Your time on the project was presumably after mine. I started work as a design engineer on the Typhoon radar in 1990, about the time the development contract was signed (the bid team in our...
Forum: Military Aviation
18th Feb 2011, 15:02
Replies: 98
Views: 16,847
Posted By Gravelbelly

As a young UOTC officer cadet in 1986, I managed...

As a young UOTC officer cadet in 1986, I managed to get on a sport parachuting course at Weston-on-the-Green, and was accommodated in the Officers' Mess at Brize Norton. Reasonably early on the first...
Forum: Military Aviation
2nd Nov 2010, 21:20
Replies: 16
Views: 2,544
Posted By Gravelbelly

...OK, I'll bite. Note smilies. :) :) :) ...

...OK, I'll bite. Note smilies.

:) :) :)

Perhaps it's because "salt spray" is a near-permanent reality for the large chunks of metal in the grey funnel line, and their aircraft; and because...
Forum: Military Aviation
17th Oct 2010, 13:12
Replies: 13
Views: 2,985
Posted By Gravelbelly

Your suggestion is worthy - but who will employ...

Your suggestion is worthy - but who will employ the "independent" SME? Where will they gain their experience? By way of example, when you engage a surveyor to value a house before you buy it, for...
Forum: Military Aviation
17th Oct 2010, 12:45
Replies: 13
Views: 2,985
Posted By Gravelbelly

Nice bumper-sticker arguments, but a bit...

Nice bumper-sticker arguments, but a bit simplistic.



MIL-STD kit has an increased temperature range over commercial or industrial electronics standards. Your unhardened little walkie-talkie...
Forum: Aviation History and Nostalgia
10th Sep 2010, 16:37
Replies: 44
Views: 13,338
Posted By Gravelbelly

! 11-PDP a ni deppart m'I ! pleH (Sorry -...

! 11-PDP a ni deppart m'I ! pleH

(Sorry - little-endian in-joke)
Forum: Aviation History and Nostalgia
8th Sep 2010, 23:52
Replies: 44
Views: 13,338
Posted By Gravelbelly

If I still worked at Crewe Toll, I could tell you...

If I still worked at Crewe Toll, I could tell you - there used to be one on a stand in one of our staircase landings (there was a Blue Parrot on our floor, IIRC).

24 inches is at the upper end of...
Forum: Military Aviation
13th Jul 2010, 00:11
Replies: 25
Views: 8,377
Posted By Gravelbelly

To be fair again, you could blame the Germans for...

To be fair again, you could blame the Germans for spending years arguing about it and constantly pushing the contract signature to the right. We got the contract to build the radar demonstrator in...
Forum: Military Aviation
12th Jul 2010, 20:39
Replies: 25
Views: 8,377
Posted By Gravelbelly

In a vague attempt for accuracy (with the...

In a vague attempt for accuracy (with the unlikely effect of improving Messybeast PR), it should be pointed out that PHOENIX was a GEC product. Yes folks, there was a competition between Ferranti and...
Forum: Military Aviation
11th Jan 2010, 23:26
Replies: 25
Views: 5,986
Posted By Gravelbelly

AIUI, two Ferranti LTMs were deployed with Royal...

AIUI, two Ferranti LTMs were deployed with Royal Artillery FOO parties on Op CORPORATE. One of the LTMs was destroyed by its own tac party when they thought they were about to be captured; the other...
Forum: Military Aviation
1st Dec 2009, 21:39
Replies: 87
Views: 19,095
Posted By Gravelbelly

My apologies. My size 8s waded in when someone...

My apologies. My size 8s waded in when someone offered the following opinion; I thought it better to reply before anyone took it seriously.



In a spirit of fairness, I could make a slightly...
Forum: Military Aviation
1st Dec 2009, 16:29
Replies: 87
Views: 19,095
Posted By Gravelbelly

Confession - I've spent over twenty years as a...

Confession - I've spent over twenty years as a software engineer; over a decade of that was developing avionics software for fighter radars.



Except that we're not talking about civilian...
Forum: Military Aviation
13th Nov 2009, 08:17
Replies: 14
Views: 2,156
Posted By Gravelbelly

Hasn't this been done before in the "US to deploy...

Hasn't this been done before in the "US to deploy JDAM-equipped Super Tucanos" thread (http://www.pprune.org/military-aircrew/382112-us-deploy-jdam-equipped-super-tucanos-2.html#post5168952)?
...
Forum: Military Aviation
28th Sep 2009, 21:04
Replies: 38
Views: 5,071
Posted By Gravelbelly

Except it's not just medics - it's RMP, Royal...

Except it's not just medics - it's RMP, Royal Engineers, Royal Artillery. Try telling the FOO, or the Combat Engineer, that they aren't as far forward as the infantry they're supporting, or carrying...
Forum: Military Aviation
27th Sep 2009, 21:59
Replies: 38
Views: 5,071
Posted By Gravelbelly

Read the following: Precision Voting...

Read the following:
Precision Voting (http://www.michaelyon-online.com/precision-voting.htm)
Look at the pictures. End of patrol, women still carrying all their own kit.

See also:
Night Into...
Forum: Military Aviation
4th Sep 2009, 11:14
Replies: 28
Views: 7,792
Posted By Gravelbelly

Except.... this rather interesting PPT would seem...

Except.... this rather interesting PPT would seem to indicate that the Tucanos are being bought as a much cheaper way to expand FAC training (because a lot more people suddenly need it), rather than...
Forum: Military Aviation
30th Aug 2009, 20:53
Replies: 44
Views: 24,476
Posted By Gravelbelly

In the early 1990s, as a young STAB infantry...

In the early 1990s, as a young STAB infantry officer, I volunteered for a trawl that was looking for exercise umpires for the Belize battlegroup. Of course, the VC10 flights ran midweek, and the...
Showing results 1 to 35 of 43
 
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