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Search: Posts Made By: the coyote
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Forum: Rotorheads
26th Aug 2020, 13:36
Replies: 550
Views: 442,768
Posted By the coyote

10 degrees nose down for 1 second on takeoff in...

10 degrees nose down for 1 second on takeoff in the 139 is a standard profile and should be so rehearsed to be second nature, and definitely no big deal in the dark.

As professional pilots in...
Forum: Rotorheads
14th Dec 2019, 22:40
Replies: 38
Views: 16,009
Posted By the coyote

Never take your brain and common sense out of the...

Never take your brain and common sense out of the equation.
There's a rule mandating PC1 at some places, but there's also a rule saying thou shalt not cause damage or hazard with your downwash. Pick...
Forum: Rotorheads
14th Dec 2019, 20:54
Replies: 38
Views: 16,009
Posted By the coyote

Well explained JimL. In our A139 HEMS...

Well explained JimL.

In our A139 HEMS operations, all the hospital landing sites that mandate PC1 are surveyed with the appropriate approach/departure tracks and (almost always variable)...
Forum: Rotorheads
31st May 2019, 12:01
Replies: 58
Views: 25,619
Posted By the coyote

A quick training technique is to get the student...

A quick training technique is to get the student to do complete pedal turns with only one foot on the pedals.
Forum: Rotorheads
29th May 2019, 13:06
Replies: 58
Views: 25,619
Posted By the coyote

Without casting any judgement on this incident, I...

Without casting any judgement on this incident, I think that the window when pilots are about 500-1500 hours is the most dangerous. Confidence is up, but you simply don't know what you don't know.
...
Forum: Rotorheads
5th Apr 2019, 15:34
Replies: 12
Views: 3,195
Posted By the coyote

Transient limit is 106% for up to 10 seconds. ...

Transient limit is 106% for up to 10 seconds. Did it exceed that? Sometimes it might take a second or three to sort itself out. In older non-digital and non-verbal aircraft, it most likely wouldn't...
Forum: Rotorheads
30th Mar 2019, 12:12
Replies: 13
Views: 2,195
Posted By the coyote

He or she who uses NVG and doesn't regularly have...

He or she who uses NVG and doesn't regularly have a look under them for such lighting is a fool...or poorly trained.
Forum: Rotorheads
30th Mar 2019, 04:02
Replies: 55
Views: 21,839
Posted By the coyote

No one is immune from human error. Those that...

No one is immune from human error. Those that have, and those that will if they do it for long enough.
Forum: Rotorheads
10th Mar 2019, 03:31
Replies: 46
Views: 14,030
Posted By the coyote

One can stretch the fuel a long way by shutting...

One can stretch the fuel a long way by shutting one engine down too.
Forum: Rotorheads
26th Dec 2017, 02:34
Replies: 33
Views: 11,172
Posted By the coyote

If you fly a black hole approach without absolute...

If you fly a black hole approach without absolute attention to the numbers then you are simply asking for trouble. In my view it is 10% eyeball and 90% instrument. Plot a distance to run/altitude...
Forum: Rotorheads
15th Aug 2017, 05:28
Replies: 10
Views: 2,343
Posted By the coyote

I fail to understand why the pilot didn't roll...

I fail to understand why the pilot didn't roll the throttle off and cushion it onto the ground. Poor training I guess.
Forum: Rotorheads
9th Jun 2017, 04:29
Replies: 92
Views: 25,611
Posted By the coyote

He'd be buggered if that little screen went...

He'd be buggered if that little screen went black.....
Forum: Rotorheads
14th Apr 2017, 13:42
Replies: 1,868
Views: 1,137,317
Posted By the coyote

Al-bert It refers to a generation of pilots...

Al-bert

It refers to a generation of pilots that have grown up using automation.

Youtube: Children of Magenta (https://www.youtube.com/watch?v=pN41LvuSz10)

A presentation well worth watching...
Forum: Rotorheads
6th Apr 2016, 22:00
Replies: 29
Views: 9,144
Posted By the coyote

Probably because they cost about as much as the...

Probably because they cost about as much as the aircraft don't they?
Forum: Rotorheads
4th Jan 2016, 12:14
Replies: 72
Views: 9,046
Posted By the coyote

Geoffersincornwall, I understand your dilemma. ...

Geoffersincornwall, I understand your dilemma. But I'll take going against the checklist over a good chance of flying into a mountain any day. Alarm bells ring for me if a pilot is letting the...
Forum: Rotorheads
4th Jan 2016, 04:09
Replies: 72
Views: 9,046
Posted By the coyote

Of the 3 fire warnings in flight I have had, all...

Of the 3 fire warnings in flight I have had, all were found to be false indications from detector and wiring faults. Still I would have to find good reason not to act on a fire warning and shut it...
Forum: Rotorheads
11th Mar 2015, 00:34
Replies: 282
Views: 67,498
Posted By the coyote

I am not questioning that the technique might or...

I am not questioning that the technique might or might not work.



I find that impossible to believe. Hawkeye0001, how long were you established in VRS for, and what was your ROD when you...
Forum: Rotorheads
18th Dec 2013, 10:47
Replies: 11
Views: 2,816
Posted By the coyote

Well done. From an armchair critics view, I...

Well done. From an armchair critics view, I would have thought a different heading to give a good hover reference off the boom of the crane would have made it easier and safer, even if out of wind. ...
Forum: Rotorheads
30th Mar 2013, 10:20
Replies: 40
Views: 6,514
Posted By the coyote

As we know, the recovery from VRS requires...

As we know, the recovery from VRS requires airspeed. But in VRS, the rotor disc may not respond to cyclic inputs as you would expect, and in fully developed VRS, you may have little or no control...
Forum: Rotorheads
22nd Jul 2012, 22:12
Replies: 29
Views: 3,902
Posted By the coyote

Why not keep the RRPM where it needs to be given...

Why not keep the RRPM where it needs to be given the situation you are in?

What does the flare do? Yes, it increases RRPM (very helpful), yes it decreases speed (even more important), but the...
Forum: Rotorheads
17th Jul 2012, 18:47
Replies: 149
Views: 25,732
Posted By the coyote

Get some good professional help. Anxieties are...

Get some good professional help. Anxieties are common and curable.
Forum: Rotorheads
13th Jul 2012, 05:15
Replies: 60
Views: 26,663
Posted By the coyote

Sad news, bodies of all three have been found. ...

Sad news, bodies of all three have been found. RIP.

Sydney Morning Herald (http://news.smh.com.au/breaking-news-world/bodies-of-png-chopper-crash-victims-found-20120713-220i4.html)
Forum: Rotorheads
24th Feb 2012, 08:47
Replies: 18
Views: 3,352
Posted By the coyote

Decredenza, Your basic picture is for...

Decredenza,

Your basic picture is for autorotation, not powered flight.

The entire rotor disc area is used because that is what determines the disc loading. Lift is produced by changing the...
Forum: Rotorheads
23rd Feb 2012, 10:26
Replies: 18
Views: 3,352
Posted By the coyote

A: Math is good B: No idea, sorry!! By...

A: Math is good
B: No idea, sorry!!

By my numbers a Bell 412 at 11900 lbs gross weight and rotor diamter of 46 feet will have a downwash velocity of 38.8 fps or 2330 fpm.

An S76 at 11700 lbs...
Forum: Rotorheads
23rd Feb 2012, 09:23
Replies: 18
Views: 3,352
Posted By the coyote

Hi there, I calculate it as: Disk...

Hi there,

I calculate it as:

Disk loading (in lbs per square foot) X 210 and then take the square root.

This gives the average downwash velocity in feet per second.

By my numbers:
Showing results 1 to 25 of 269
 


 
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