Search found 38 matches

by nfield
Tue May 25, 2004 1:15 am
Forum: Technical/Operations
Topic: 757 Wake Turbulence
Replies: 30
Views: 12383

RE: 757 Wake Turbulence

Having spent many a happy hour outside the Green Man pub - only 1/4 mile from touchdown <acronym title="London - Heathrow (LHR / EGLL), United Kingdom">LHR</acronym> 27L - I can confirm that 757's seem to have the worst wake turbulence. It sounds like a gigantic sheet of paper being ripped up and yo...

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by nfield
Thu Apr 29, 2004 2:29 am
Forum: Technical/Operations
Topic: Jet Engine Compressor Blades
Replies: 9
Views: 8757

RE: Jet Engine Compressor Blades

Hi, Expratt, thanks - that'll be why I notice some polishing marks on the blended blades. You would have thought that the aerodynamics would suffer, but I understand that compressor blades are not really designed as aerofoils.

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by nfield
Thu Apr 29, 2004 1:49 am
Forum: Technical/Operations
Topic: Jet Engine Compressor Blades
Replies: 9
Views: 8757

RE: Jet Engine Compressor Blades

Hi, Aloges, it is actually a rotor of high temperature nickel alloy and not titanium, so is weights about 40kg.

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by nfield
Thu Apr 29, 2004 12:33 am
Forum: Technical/Operations
Topic: Jet Engine Compressor Blades
Replies: 9
Views: 8757

Jet Engine Compressor Blades

I am now the proud owner of an authenticated <acronym title="Royal Air Force (United Kingdom)">RR</acronym> Olympus - No4 <acronym title="America West Airlines (USA)">HP</acronym> compressor disk, complete with blades. I notice that the blades are not all of uniform shape. Some have sharp, square ed...

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by nfield
Tue Mar 30, 2004 1:53 am
Forum: Military Aviation & Space Flight
Topic: Lockheed F104 T Tail
Replies: 10
Views: 5342

Lockheed F104 T Tail

Why did Lockheed design the Starfighter with a "T" tail? I understand that the masking of the elevator by the fuselage at high AOA leads to pitch-up which might not be recoverable. Just about every other jet fighter has elevators low down on the fuselage.

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by nfield
Tue Mar 16, 2004 12:43 am
Forum: Technical/Operations
Topic: Vertical Fin Shapes
Replies: 10
Views: 2552

Vertical Fin Shapes

I've noticed that high performance aircraft (above Mach 1) often have trapezoidal fins where both base angles are less the 90 degrees. Anyone know the aerodynamic reasons? <br><center><font color="#EEEEEE" size="1" face="ARIAL, Helvetica, Geneva"><a href="/open.file/532163/L/" target="_blank">View L...

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by nfield
Wed Jan 28, 2004 8:06 pm
Forum: Technical/Operations
Topic: Concorde Wing Detail
Replies: 2
Views: 2497

Concorde Wing Detail

Anybody know the purpose of the broken line running about 1m in from the leading edge? Maybe a "don't tread beyond" limit. <br><center><font color="#EEEEEE" size="1" face="ARIAL, Helvetica, Geneva"><a href="/open.file/444695/L/" target="_blank">View Large</a> <a href="/open.file/444695/M/" target="_...

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by nfield
Thu Dec 18, 2003 11:40 pm
Forum: Military Aviation & Space Flight
Topic: Wright Patterson AFB
Replies: 10
Views: 4606

RE: Wright Patterson AFB

Many thanks, Broke, for such a comprehensive reply. What a brilliant collection - sounds like I'll be needing two days at least.

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by nfield
Thu Dec 18, 2003 1:02 am
Forum: Military Aviation & Space Flight
Topic: Wright Patterson AFB
Replies: 10
Views: 4606

Wright Patterson AFB

Anyone know if the US Airforce Museum is open, as a number of airliners.net photos seem to indicate that the museum is closed. I'll be in the US next year and would make a special trip to Ohio if I could be sure of viewing what looks like a fantastic collection. In particular B36, B47, B52, XB70, SR...

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by nfield
Sat Nov 15, 2003 2:01 am
Forum: Technical/Operations
Topic: TU-144 Vs Concorde
Replies: 11
Views: 40062

RE: TU-144 Vs Concorde

Hi, Vc10, what are the aerodynamics behind the small canards. I guess they generate vortices - but the rudder seems a long way back and the vortex off the main wings must be large in comparison!

thanks

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by nfield
Sat Nov 01, 2003 1:50 am
Forum: Civil Aviation
Topic: Most Beautiful Airline Livery
Replies: 94
Views: 26357

RE: Most Beautiful Airline Livery

The most beautiful livery lives on the most beautiful aircraft - nuff said <br><center><font color="#EEEEEE" size="1" face="ARIAL, Helvetica, Geneva"><a href="/open.file/446129/L/" target="_blank">View Large</a> <a href="/open.file/446129/M/" target="_blank">View Medium<br><IMG SRC="/photos/small/9/...

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by nfield
Sat Nov 01, 2003 1:34 am
Forum: Civil Aviation
Topic: Concorde Retirement Homes Announced
Replies: 37
Views: 4953

RE: Concorde Retirement Homes Announced

I do not understand why the US needs two Concordes on the East Coast. In particular G-BOAD, the Transatlantic record breaker should not go to the US Intrepid (a rusting hulk with very poorly preserved exhibits). The aircraft on the deck are in a very poor state and Concorde does not belong in a mili...

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by nfield
Tue Oct 28, 2003 11:54 pm
Forum: Civil Aviation
Topic: Concorde: Last Great Thing Britain Has Done?
Replies: 49
Views: 5857

RE: Concorde: Last Great Thing Britain Has Done?

I'd say that on an emotional level the man in the street has certainly been affected by the demise of Concorde. Many millions of Londoner's have experienced the unique and beautiful sight of her from holding over Ockham to line up and approach at Heathrow. I'd watch hundreds of people on Clapham sta...

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by nfield
Wed Oct 15, 2003 1:34 am
Forum: Technical/Operations
Topic: Engine Name Designations
Replies: 8
Views: 3491

RE: Engine Name Designations

Thanks for the informative responses
Nick

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by nfield
Mon Oct 13, 2003 6:38 pm
Forum: Technical/Operations
Topic: Engine Name Designations
Replies: 8
Views: 3491

Engine Name Designations

Anyone know why RR jet engines are named after UK rivers (Avon, Spey, Trent...and so on), except the RB211? Also, how do manufaturers arrive at the final number designation eg: RB211-535?

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by nfield
Tue Oct 07, 2003 7:34 am
Forum: Civil Aviation
Topic: AF Vs BA Concorde Service
Replies: 34
Views: 5298

RE: AF Vs BA Concorde Service

Listen, all that matters is that the most beautiful, graceful aircraft ever to exist is being taken out of the sky - there's no point bitching about who's to blame, they know who they are. All that's left after 24th October is tedious c**p - you won't see <acronym title="London - Heathrow (LHR / EGL...

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by nfield
Fri Sep 26, 2003 6:55 pm
Forum: Civil Aviation
Topic: Concordeski Comeback?
Replies: 20
Views: 5239

RE: Concordeski Comeback?

JmChladek should not worry about bashing the French, its largely Airbus who are to blame for Concorde's premature retirement. Thus denying us a few more years of witness to one of the pinnacles of aviation. <acronym title="British Airways">BA</acronym> would have continued with her a little longer w...

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by nfield
Fri Sep 26, 2003 1:23 am
Forum: Civil Aviation
Topic: What's More Important 707 Or Concorde?
Replies: 71
Views: 5677

RE: What's More Important 707 Or Concorde?

Concorde, of course - "Toady's" superb words sum up my exact feelings (and those of thousands of others). Just ask the 100's of people who turn-up every day to watch her land and take-off at <acronym title="London - Heathrow (LHR / EGLL), United Kingdom">LHR</acronym>. I'm not just talking about "ge...

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by nfield
Thu Sep 18, 2003 10:22 pm
Forum: Technical/Operations
Topic: Overbanking Tendency - C172
Replies: 19
Views: 7646

RE: Overbanking Tendency - C172

Lockheed Dragon Lady (<acronym title="easyJet (United Kingdom) and United Feeder Service (USA)">U2</acronym>) pilots will know all about this. At high altitude, with thin air, the "coffin corner" of the flight envelope is approached and turns have to be made very carefully. The wing on the outside c...

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by nfield
Thu Sep 11, 2003 12:37 am
Forum: Technical/Operations
Topic: AN-225 Design Feature
Replies: 16
Views: 7245

RE: AN-225 Design Feature

A Google search uncovered this at http://www.aeronautics.ru/archive/vvs/an225-01.htm Outsize loads that cannot fit into the capacious cabin (including Buran and Energiya components) are carried 'piggyback', the load supported on two main attachments above the center section. These supports and other...

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by nfield
Mon Sep 08, 2003 10:17 pm
Forum: Civil Aviation
Topic: 6 Engine Prop Plane In BOS?
Replies: 6
Views: 16517

RE: 6 Engine Prop Plane In BOS?

You mean THE Antonov 225, I think there is only one and it would be a long way from home. On the other hand it woud be real great if you had seen one of these (10 engines in total!) - but sadly a piece of history <br><center><font color="#EEEEEE" size="1" face="ARIAL, Helvetica, Geneva"><a href="/op...

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by nfield
Sat Sep 06, 2003 1:04 am
Forum: Civil Aviation
Topic: BA Considering Countermeasures For Airliners
Replies: 24
Views: 3486

RE: BA Considering Countermeasures For Airliners

It would be interesting to see a 747 ejecting chaff and flares over Hounslow/Staines

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by nfield
Thu Aug 28, 2003 11:05 pm
Forum: Technical/Operations
Topic: Concorde Heathrow Take-off
Replies: 4
Views: 2041

Concorde Heathrow Take-off

Last Saturday (23rd August) at 10:50, I was at the end of <acronym title="London - Heathrow (LHR / EGLL), United Kingdom">LHR</acronym>, 27R on the A3044, waiting for the Concorde flight outbound to Barbados (late again!). 27R was the landing runway, so Concorde had to be squeezed into a gap in the ...

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by nfield
Mon Aug 11, 2003 9:03 pm
Forum: Civil Aviation
Topic: BA Concordes, Where Are They?
Replies: 6
Views: 3585

RE: BA Concordes, Where Are They?

Thanks, Gordon, I can't remember the number of times I have seen that Trident and never looked at the hanger behind!

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by nfield
Sat Aug 09, 2003 10:29 pm
Forum: Civil Aviation
Topic: BA Concordes, Where Are They?
Replies: 6
Views: 3585

BA Concordes, Where Are They?

Does anybody know the whereabouts of BOAA and BOAB - according to the Concorde SST site they are at Heathrow but I've not seen either of them. I know they have been withdrawn from service - have they been secretly flown out to their last resting place(s)?

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by nfield
Fri Jul 11, 2003 1:48 am
Forum: Technical/Operations
Topic: DC10/MD11/Tristar Tail Fin Extension
Replies: 3
Views: 3363

DC10/MD11/Tristar Tail Fin Extension

Anyone know the purpose of the tail fin extension above the No2 engine on these aircraft?

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by nfield
Wed May 28, 2003 12:47 am
Forum: Technical/Operations
Topic: Concorde Nose Wheel
Replies: 5
Views: 3585

Concorde Nose Wheel

Anyone know what the bar across the nosewheel does? On another tack, the individuals at <acronym title="British Airways">BA</acronym> senior management are totally soleless - Concorde must be the most amazingly beautiful flying machine ever built and still going twice as fast as any other airliner a...

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by nfield
Tue Mar 04, 2003 2:15 am
Forum: Technical/Operations
Topic: Anyone Has Flown The Aeronca?
Replies: 16
Views: 7628

RE: Anyone Has Flown The Aeronca?

Well, sort of, a scale model of a Champ with 8ft wing span and a 90 4 stroke up front. I can vouch for the need to coordinate rudder with aileron - aileron only and it turns the wrong way!

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by nfield
Thu Feb 13, 2003 9:40 pm
Forum: Military Aviation & Space Flight
Topic: Lockheeed SR71 Inlets
Replies: 8
Views: 6146

RE: Lockheed SR71 Inlets

Hi, Minuteman, I always understood that turbojets would not run on supersonic airflow. I have since located the following, <a href="http://www.dcr.net/~stickmak/JOHT/joht20airprop.htm," target="_blank">http://www.dcr.net/~stickmak/JOHT/joht20airprop.htm,</a> and quote "In a turboramjet engine a turb...

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by nfield
Thu Feb 13, 2003 3:06 am
Forum: Military Aviation & Space Flight
Topic: Lockheeed SR71 Inlets
Replies: 8
Views: 6146

Lockheeed SR71 Inlets

I have read much about the A12/YF12A/SR71 family, in particular the amazingly complex inlet plumbing for the J58's. However, I have never been able to understand how more than half the thrust can originate from the inlets at cruise Mach. Does it suck itself through the air?

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by nfield
Fri Feb 07, 2003 2:51 am
Forum: Aviation Hobby
Topic: Telescopic Aerials
Replies: 8
Views: 3278

RE: Telescopic Aerials

Did it work? - I found that a simple cheap telescopic was marginally better than a rubber duck (until you poke it into an eye by mistake!)

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by nfield
Tue Feb 04, 2003 1:59 am
Forum: Technical/Operations
Topic: Engine Nacelle Location
Replies: 9
Views: 4734

Engine Nacelle Location

This may seem a silly question, but what are the aerodynamic considerations which cause aircraft designers to locate podded engines on nacelles which are forward of the wing and below the leading edge. I can think of the practical aspects, like engine access, but you would have thought that dangling...

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by nfield
Thu Jan 30, 2003 3:03 am
Forum: Military Aviation & Space Flight
Topic: Does This Mean What I Think It Means?
Replies: 9
Views: 4265

RE: Does This Mean What I Think It Means?

I think its fair to say that anyone who has ever seen a Vulcan do an airshow display (male or female) won't forget it for the rest of their lives. Good power to weight and enormous lift make for amazing manoeuvrability from such a large aircraft. The only more exciting aircract display I've ever see...

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by nfield
Wed Jan 22, 2003 11:40 pm
Forum: Military Aviation & Space Flight
Topic: B52 Flight Characteristics
Replies: 13
Views: 12520

B52 Flight Characteristics

Is it my imagination or do Boeing B52's fly slightly nose down? Is the reason that tandem main gear prevents rotation at take-off, therefore the main wing has a lot of positive incidence compared with conventional aircraft.

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by nfield
Wed Jan 22, 2003 11:21 pm
Forum: Civil Aviation
Topic: What Makes The Aircraft Rotate?
Replies: 29
Views: 6956

RE: What Makes The Aircraft Rotate?

Some aircraft can't rotate, like the Boeing B47 and B52 which have tandem main gear. If you look at the B47, it sits on the ground nose-up in a semi-rotated position anyway. However B52s sit level and take off flat, looks really odd.

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by nfield
Fri Dec 20, 2002 8:34 pm
Forum: Military Aviation & Space Flight
Topic: Coffin Corner
Replies: 10
Views: 15215

RE: Coffin Corner

Many thanks to Zauberfloete, Broke and EssentialPowr for such detailed and informative answers, Nick

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by nfield
Tue Dec 17, 2002 8:20 pm
Forum: Military Aviation & Space Flight
Topic: Coffin Corner
Replies: 10
Views: 15215

Coffin Corner

Can anyone explain the meaning of the phrase Coffin Corner? I've heard it mentioned in connection with the B47 Stratojet at altitude. What is it and what do you do to get out of it?

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by nfield
Fri Dec 13, 2002 9:32 pm
Forum: Military Aviation & Space Flight
Topic: F4 Phantom Aerodynamics
Replies: 4
Views: 8633

F4 Phantom Aerodynamics

Does anyone know where I can go for a detailed description of why the F4 is the shape it is? Still an impressive machine now, but, some features do not seem to have been repeated on other military fast jets. 1) Extremely anhedral tail plane, with the aerofoil section seemingly upside down! 2) Dihedr...

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