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Forum: Tech Log
15th Jan 2016, 23:57
Replies: 21
Views: 5,589
Posted By Blip

Take off performance: Drag at 160 kt = 190 N...

Take off performance:

Drag at 160 kt = 190 N
10 nm = 18520 m
Energy = 3,518,800 Joules per light.

3,518,800 J / 9.8 / 75,000 kg = 4.79 m per light.
2 x 4.79 x 3.281 = 17 ft

So after 10 nm...
Forum: Tech Log
15th Jan 2016, 23:44
Replies: 21
Views: 5,589
Posted By Blip

OK I've done some simple calculations which...

OK I've done some simple calculations which reveal the region of numbers we're talking about here.

CD = 1.17
Diameter = 0.23 m
TAS = 250 kt
Force = 465 N
Distance = 55,000 m (30 nm)
Energy =...
Forum: Tech Log
13th Jan 2016, 23:05
Replies: 21
Views: 5,589
Posted By Blip

Thank you Chu Chu. That's exactly what I was...

Thank you Chu Chu. That's exactly what I was asking for. And thank you to all the others who contributed constructively to the discussion.

By the way I did a walk around the other day and...
Forum: Tech Log
12th Jan 2016, 20:27
Replies: 21
Views: 5,589
Posted By Blip

RAT 5 Indeed! Note in my original post I...

RAT 5

Indeed! Note in my original post I said I was wanting to quantify the energy WASTED by having the lights extended.

At the moment it is standard company procedure to have them extended...
Forum: Tech Log
12th Jan 2016, 03:56
Replies: 21
Views: 5,589
Posted By Blip

B737NG retractable landing light drag.

I'm trying to calculate the extra drag created while the retractable landing lights are extended.

Ultimately I'm wanting to calculate the extra work and hence energy wasted by having these...
Forum: Tech Log
17th Nov 2015, 10:20
Replies: 5
Views: 3,288
Posted By Blip

Australian ATC holding fuel

Recently the promulgated ATC holding requirements at various capital city airports in Australia became no longer mandatory but rather "advisory" only.

Can someone please show me where I can find...
18th Nov 2013, 17:11
Replies: 17
Views: 6,411
Posted By Blip

A bit late.......15 nov. YSSY

I flew into Sydney that morning and decided to carry 60 mins holding fuel. Why? I'm now in the habit of going to the BOM home page and clicking on the forecast released to the general public for the...
23rd Aug 2013, 23:01
Replies: 73
Views: 21,271
Posted By Blip

Nick Xenophon

Conserve
Conservation
Conservative
There's the irony.

Here's one example where mainstream politically "conservative" is in my mind radical and ridiculous (worthy of ridicule).

Perpetual...
23rd Aug 2013, 09:47
Replies: 73
Views: 21,271
Posted By Blip

I don't want to take this thread off topic. ...

I don't want to take this thread off topic.

Have a look for yourself.

Policy Highlights and Policy Detail | Australian Greens (http://greens.org.au/initiatives-and-policies)

I may not agree...
23rd Aug 2013, 07:19
Replies: 73
Views: 21,271
Posted By Blip

I'm sorry but I can't let a derogatory statement...

I'm sorry but I can't let a derogatory statement like that go without reply.

I have no doubt that this world would be a much much better place if there were more "feral Greenies" a less mainstream...
16th Apr 2013, 11:57
Replies: 49
Views: 7,782
Posted By Blip

I'm sorry Chuck Ellsworth but I have to disagree...

I'm sorry Chuck Ellsworth but I have to disagree quite strongly with your assertion about the usefulness of using the far end of the runway as the new aiming point once the flare has begun, and...
Forum: Questions
15th Apr 2013, 11:44
Replies: 7
Views: 3,317
Posted By Blip

SLOP (Strategic Lateral Offset Procedure)

There are two things about this concept that don't make sense to me.

1. Why do the rule makers allow only three offset values to choose from. 1, 2, or 3 nm. And why exact whole numbers i.e 2.0...
Forum: Tech Log
4th Sep 2012, 03:11
Replies: 58
Views: 10,136
Posted By Blip

I fly the B737 but I imagine the speedbrakes on...

I fly the B737 but I imagine the speedbrakes on the A320 have approximately the same performance. i.e. they reduce the lift/drag ratio by about 30% when fully extended.

Some observations that I...
Forum: Tech Log
25th Jun 2012, 23:35
Replies: 29
Views: 6,143
Posted By Blip

On the contrary, de facto. A ridiculous...

On the contrary, de facto.

A ridiculous requirement such as this deserves a ridiculous solution. This is assuming that the dispatch fuel requirement is in fact required in flight, which as many...
Forum: Tech Log
25th Jun 2012, 04:22
Replies: 29
Views: 6,143
Posted By Blip

Why not make your alternate the destination and...

Why not make your alternate the destination and your destination the alternate?

Take off with minimum fuel, fly a little low and fast, then you are sure to arrive at your destination with less...
Forum: Tech Log
4th Jan 2011, 02:58
Replies: 48
Views: 8,185
Posted By Blip

I was in the B737-800 sim the other day. Low...

I was in the B737-800 sim the other day.

Low vis take-off at MTOW (79 t) and 15 kt quartering tailwind. ( 10 kt TW, 10 kt XW). Engine failed shortly after V1. (They're mean aren't they!) :)

No...
Forum: Tech Log
4th Dec 2010, 13:08
Replies: 11
Views: 3,787
Posted By Blip

Sorry guys but I still don't really get it....

Sorry guys but I still don't really get it. Checkboard sort of makes sense to me but I don't know how that logic is deduced from the information in the Ops manual as I quoted it.

BOAC both ILS...
Forum: Tech Log
2nd Dec 2010, 02:43
Replies: 11
Views: 3,787
Posted By Blip

B737 Transformer Rectifier failure and ILS Appraoches

I'm trying to get my head around the concept of isolating the TR units during an ILS approach. It applies to both the classic and the NG B737.

From the B737-800 Operations Manual:

The cross tie...
Forum: Tech Log
19th Feb 2010, 09:52
Replies: 69
Views: 16,354
Posted By Blip

Sorry 9.G but I must correct you there. What you...

Sorry 9.G but I must correct you there. What you mean to say is " IT SHOULD be pointless to discuss the case of a GA below DA IMHO. as it's self-explanatory Cheers"

Unfortunately the fact that...
Forum: Tech Log
12th Feb 2010, 10:13
Replies: 26
Views: 4,393
Posted By Blip

So can someone explain why low by-pass ratio...

So can someone explain why low by-pass ratio engines produce so much black smoke?

B-707, B-727, B-52! come to mind.

Thanks.
Forum: Tech Log
12th Feb 2010, 10:00
Replies: 69
Views: 16,354
Posted By Blip

Oh dear indeed mm43! Are proposing we just make...

Oh dear indeed mm43! Are proposing we just make it up as we go along??

Last time I checked the WLG 34 ILS chart it indicated that CIRCLE-TO-LAND was "NA". What does that say to a B737 or B767 crew...
Forum: Tech Log
12th Feb 2010, 08:08
Replies: 69
Views: 16,354
Posted By Blip

This issue has been raised a number of times in...

This issue has been raised a number of times in the past here in pprune if you look back far enough and each time I have been amazed by those people that dismiss this issue.

In my opinion, your...
Forum: Tech Log
18th Oct 2009, 23:34
Replies: 19
Views: 7,190
Posted By Blip

misd-agin. It looks to me you are quoting normal...

misd-agin. It looks to me you are quoting normal glide figures, not all-engine-out figures which is what this thread is about. I might be wrong though. Can you confirm either way please?

galaxy...
Forum: Tech Log
8th Oct 2009, 09:39
Replies: 19
Views: 7,190
Posted By Blip

Don't mean to answer my own question because I am...

Don't mean to answer my own question because I am no way certain of the physics involved however...

If rate of climb (or descent) is determined by power produced by engines, and the power is...
Forum: Tech Log
8th Oct 2009, 08:25
Replies: 19
Views: 7,190
Posted By Blip

Estimating dead-stick glide performance.

I've been thinking about this for a while and just want to confirm my suspicions.

Flying B737-400.
Flaps Up.
210 knots.
Rate of descent = 1000 fpm.
Flight-Idle thrust fuel flow = 350 kg/h...
Showing results 1 to 25 of 306
 


 
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