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Search: Posts Made By: Keith.Williams.
Showing results 1 to 35 of 749
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Forum: South Asia and the Far East
20th Nov 2010, 17:36
Replies: 365
Views: 123,680
Posted By Keith.Williams.

Hello Wingflex, Thank you for your feedback...

Hello Wingflex,

Thank you for your feedback on my 1000 Questions Answers & Explanations for General Navigation book.

I have checked through all of the questions in the "CIRCLES" chapter, but I...
Forum: Tech Log
16th Nov 2010, 22:53
Replies: 24
Views: 10,183
Posted By Keith.Williams.

In order to provide longitudinal stability the...

In order to provide longitudinal stability the tailplane must experience a change in angle of attack when the aircraft pitches nose up or nose down.
The greater the change in angle of attack, the...
Forum: Tech Log
15th Nov 2010, 19:47
Replies: 21
Views: 17,621
Posted By Keith.Williams.

As an aircraft accelerates through the transonic...

As an aircraft accelerates through the transonic speed range, shock waves form on the upper and lower surfaces of its wings.

A shock wave is a sudden increase in static pressure. As the air...
Forum: Tech Log
14th Nov 2010, 16:44
Replies: 21
Views: 17,621
Posted By Keith.Williams.

If you do a search for the words mach tuck under...

If you do a search for the words mach tuck under you will find numerous explanations.
Forum: Professional Pilot Training (includes ground studies)
24th Oct 2010, 23:00
Replies: 14
Views: 9,476
Posted By Keith.Williams.

Evernesky, I have received your message and...

Evernesky,

I have received your message and have sent you some examples of the more difficult DGCA calculation questions and step-by-step solutions.
Forum: Military Aviation
19th Oct 2010, 14:50
Replies: 7,458
Views: 2,399,511
Posted By Keith.Williams.

Isn't all of this simply a continuation of the...

Isn't all of this simply a continuation of the way MOD procurement has always work?

The services argue to get ships or aircraft knowing perfectly well that the new kit will not be able to do what...
Forum: Professional Pilot Training (includes ground studies)
17th Oct 2010, 18:29
Replies: 14
Views: 9,476
Posted By Keith.Williams.

No, I am Keith Williams. You can get locally...

No, I am Keith Williams.

You can get locally produced versions of the books from The English Book Store (Himalayan Books) in New Delhi.

Or you can get UK produced versions from Sterling Book...
Forum: Professional Pilot Training (includes ground studies)
17th Oct 2010, 09:55
Replies: 14
Views: 9,476
Posted By Keith.Williams.

You will find examples and further debate in the...

You will find examples and further debate in the SOUTH ASIA AND FAR EAST Forum.
Forum: Tech Log
17th Oct 2010, 09:52
Replies: 46
Views: 50,832
Posted By Keith.Williams.

Whether we are talking about propeller aircraft...

Whether we are talking about propeller aircraft or jets, there is no single speed that will provide Max endurance, Max range and Best Glide Speed."

Max endurance occurs at the speed where fuel...
Forum: Tech Log
16th Oct 2010, 15:53
Replies: 46
Views: 50,832
Posted By Keith.Williams.

When studied at ATPL level the conventional...

When studied at ATPL level the conventional explanations for best endurance and best range speeds are as follows.

Endurance is the amount of time that we can fly using the quantity of fuel that we...
Forum: Professional Pilot Training (includes ground studies)
15th Oct 2010, 08:50
Replies: 3
Views: 1,354
Posted By Keith.Williams.

The answer to your question depends upon your...

The answer to your question depends upon your reason for asking it.

This question also appears in the Tech Log Forum. As stated by BOAC in that forum by, in the real-world the solution of this...
Forum: Professional Pilot Training (includes ground studies)
7th Oct 2010, 18:45
Replies: 52
Views: 7,327
Posted By Keith.Williams.

On what basis have you reached that conclusion? ...

On what basis have you reached that conclusion?

The vast majority of the thousands of people who have passed through the flying schools and gone on to become commercial pilots each year have...
Forum: Tech Log
6th Oct 2010, 19:22
Replies: 10
Views: 2,286
Posted By Keith.Williams.

And V1 must not be less than the minimum speed at...

And V1 must not be less than the minimum speed at which we can recognize a critical engine failure, decide to go, and complete the take-off safely, with the critical engine inoperative, reaching V2...
Forum: Tech Log
4th Oct 2010, 12:13
Replies: 4
Views: 1,402
Posted By Keith.Williams.

See this thread for previous recent coverage of...

See this thread for previous recent coverage of this subject
...
Forum: South Asia and the Far East
30th Sep 2010, 21:41
Replies: 6
Views: 3,039
Posted By Keith.Williams.

Difficicult DGCA exam questions

I am in the process of producing an interactive CD ROM covering the many different kinds of calculations that are used in the Indian DGCA ATPL and CPL examinations. It will include an unlimited...
Forum: Tech Log
30th Sep 2010, 09:26
Replies: 9
Views: 2,784
Posted By Keith.Williams.

212man The crux of the matter is what...

212man

The crux of the matter is what constitutes a means of reducing ONE ENGINE INOPERATIVE stall speed.

Every large transport aeroplane that I can think of has flaps (and often slats) which...
Forum: Tech Log
29th Sep 2010, 19:23
Replies: 15
Views: 2,416
Posted By Keith.Williams.

Virtually all of the large high-by-pass turbofans...

Virtually all of the large high-by-pass turbofans fitted to commercial transport aeroplanes fit this definition.

But if you look at the majority of the engines fitted to modern fighter aeroplanes,...
Forum: Tech Log
29th Sep 2010, 17:04
Replies: 15
Views: 2,416
Posted By Keith.Williams.

No, this is not true. The BPR is the ratio...

No, this is not true.

The BPR is the ratio of the cold stream flow (which passes through the by-pass duct), to the hot stream flow (which passes through the engine core).

It is also worth...
Forum: Tech Log
29th Sep 2010, 12:03
Replies: 9
Views: 2,784
Posted By Keith.Williams.

This was the subject of quite a bit of debate...

This was the subject of quite a bit of debate among the FTOs and CAA Examiners a few years ago.

When I asked the CAA Examiners the specific question " What does provisions for obtaining a...
Forum: Professional Pilot Training (includes ground studies)
26th Sep 2010, 18:47
Replies: 6
Views: 1,060
Posted By Keith.Williams.

It's certainly true that saving fuel isn't the...

It's certainly true that saving fuel isn't the reason for using reduced thrust take-offs.

But using reduced thrust will reduce fuel flow during take-off (although admitedly not by very much).
...
Forum: Professional Pilot Training (includes ground studies)
26th Sep 2010, 16:08
Replies: 6
Views: 1,060
Posted By Keith.Williams.

That is true. But if the runway is too short to...

That is true. But if the runway is too short to take off with full fuel and all of the pax, then we need to carry a reduced fuel load (or really annoy some of the pax by leaving them behind). This...
Forum: Professional Pilot Training (includes ground studies)
26th Sep 2010, 08:59
Replies: 4
Views: 33,829
Posted By Keith.Williams.

Question 2. The diagrams are too small so...

Question 2.

The diagrams are too small so see clearly on my computer screen.

a). 1500 kg from Cargo 3 to Cargo 1.....Moves C of G forward, so it is incorrect.

b). 1000 kg from Cargo 1 to...
Forum: Professional Pilot Training (includes ground studies)
25th Sep 2010, 14:19
Replies: 4
Views: 33,829
Posted By Keith.Williams.

Question 1. The shift to the left is OK but...

Question 1.

The shift to the left is OK but you do not appear to have reduced the total mass to account for the reduced passenger numbers.

If you do thsi does it get you closer to the correct...
Forum: Tech Log
24th Sep 2010, 09:14
Replies: 12
Views: 14,244
Posted By Keith.Williams.

It's not so much a matter of overcoming drag. ...

It's not so much a matter of overcoming drag.

Power is the rate of doing work or the rate of expending energy.

Power = Force x Speed

In the case of an aircraft in flight this becomes
...
Forum: Professional Pilot Training (includes ground studies)
23rd Sep 2010, 18:03
Replies: 15
Views: 3,364
Posted By Keith.Williams.

I don't think that it will happen very often...

I don't think that it will happen very often either, even in the case of a diversion.

But if we take the instructions as printed in the (improved?) CAP 698, I have this vision of the Captain...
Forum: Tech Log
23rd Sep 2010, 12:50
Replies: 12
Views: 14,244
Posted By Keith.Williams.

For maximum specific range we need to be...

For maximum specific range we need to be operating our engines and our airframe at their maximum efficiencies simultaneously. This means getting minimum SFC and maximum TAS/Drag ratio.


As...
Forum: Professional Pilot Training (includes ground studies)
23rd Sep 2010, 12:14
Replies: 15
Views: 3,364
Posted By Keith.Williams.

Many students complain that the material in the...

Many students complain that the material in the JAR ATPL syllabus is not relevant to the real world. I believe that Aircraft Performance is one of those areas where it could and should be very...
Forum: Professional Pilot Training (includes ground studies)
23rd Sep 2010, 10:25
Replies: 8
Views: 6,499
Posted By Keith.Williams.

You can find the CD on the pooleys.co.uk website...

You can find the CD on the pooleys.co.uk website and on the transair.co.uk websites here in the UK. It is also on websites in other countries but I do not know which.

I am not trying to sell you...
Forum: Tech Log
23rd Sep 2010, 10:15
Replies: 12
Views: 14,244
Posted By Keith.Williams.

If temperature increases this will cause the air...

If temperature increases this will cause the air to expand. So if the engine RPM remains constant, the mass flow rate of air passing through it will decrease. This will decrease the thrust. In...
Forum: Tech Log
22nd Sep 2010, 20:00
Replies: 12
Views: 14,244
Posted By Keith.Williams.

DRAG AND IAS The Airspeed Indicator (ASI)...

DRAG AND IAS

The Airspeed Indicator (ASI) measures the dynamic pressure and produces an Indicated Airspeed output (IAS) that is determined by the value of that dynamic pressure. Every time the...
Forum: Professional Pilot Training (includes ground studies)
22nd Sep 2010, 17:56
Replies: 8
Views: 6,499
Posted By Keith.Williams.

I am the author of an interactive CD ROM version...

I am the author of an interactive CD ROM version of the CQB, so I am not really the right person to give advice on which of the on-line versions is the best.
Forum: Professional Pilot Training (includes ground studies)
22nd Sep 2010, 15:02
Replies: 9
Views: 1,966
Posted By Keith.Williams.

It's probably a little bit unfair to blame this...

It's probably a little bit unfair to blame this curiosity entirely on the CAA.

Integrated courses were intended to be exactly that. Students would learn a little bit in the classrooms than...
Forum: Professional Pilot Training (includes ground studies)
22nd Sep 2010, 10:19
Replies: 3
Views: 9,232
Posted By Keith.Williams.

Increasing airspeed increases the mass flowrate...

Increasing airspeed increases the mass flowrate of air going through the engine, so it requires more fuel. The Fuel Control Unit will make the necessary adjustments without pilot intervention.
...
Forum: Professional Pilot Training (includes ground studies)
22nd Sep 2010, 10:06
Replies: 8
Views: 6,499
Posted By Keith.Williams.

Your statements that: Are OK but they...

Your statements that:



Are OK but they miss the point of the question.

The key piece of information in this question is that

This means that to avoid bursting the tyre we must ensure the...
Forum: Professional Pilot Training (includes ground studies)
21st Sep 2010, 17:47
Replies: 15
Views: 3,364
Posted By Keith.Williams.

Hi Alex, I had both the 1999 version and the...

Hi Alex,

I had both the 1999 version and the 2006 version on my bookshelf. But I picked up the 1999 version.

But that amendment raises the question of why the statement was changed from
to ...
Showing results 1 to 35 of 749
 
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