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Search: Posts Made By: rjsquirrel
Showing results 1 to 35 of 218
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Forum: Rotorheads
27th Jul 2017, 21:10
Replies: 212
Views: 116,957
Posted By rjsquirrel

sasless said, "As I read it....Geoffers and...

sasless said, "As I read it....Geoffers and Fareastdriver have arrived at two different causes already. Both very experienced Pilots and professionals and each has carefully considered a lot of...
Forum: Rotorheads
23rd Apr 2017, 20:53
Replies: 488
Views: 209,886
Posted By rjsquirrel

Sultan, the Yemen "self-crashing" Osprey was a...

Sultan, the Yemen "self-crashing" Osprey was a national embarrassment, you just are immune.
Forum: Rotorheads
23rd Apr 2017, 17:30
Replies: 488
Views: 209,886
Posted By rjsquirrel

I enjoy all the sniping about schedule here, as...

I enjoy all the sniping about schedule here, as if the aircraft for the year 2030 will be decided by 5 months in 2017!
I do note that the fans of tilt rotors don't specify the tremendous difficulty...
Forum: Rotorheads
19th Apr 2017, 17:03
Replies: 2,047
Views: 1,308,109
Posted By rjsquirrel

They add up quite nicely. It has been previously...

They add up quite nicely. It has been previously posted that the surface winds were 220 deg at 19 to 21 knots. (Bellmullet 220 at 19Kt, Mace Haed at 230 at 21kt), just about right to create the...
Forum: Rotorheads
16th Apr 2017, 20:50
Replies: 57
Views: 22,954
Posted By rjsquirrel

Sultan says, "No one knows if Sikorsky can even...

Sultan says, "No one knows if Sikorsky can even fix the apparent flaw in the 97 design." Hmmm. I heard that unlike tilt rotors, JMR is not supposed to be disposable. Perhaps foolishly, the US Army...
Forum: Rotorheads
2nd Apr 2017, 16:44
Replies: 2,047
Views: 1,308,109
Posted By rjsquirrel

I am told that 92 HUMS data is downloadable...

I am told that 92 HUMS data is downloadable regardless, unlike the reported shortfall of other HUMS systems. Also, the 92 HUMS is said to have hundreds of parameters, including those normally part of...
Forum: Rotorheads
17th Mar 2017, 00:14
Replies: 2,047
Views: 1,308,109
Posted By rjsquirrel

Looking carefully, their path shows a bee-line...

Looking carefully, their path shows a bee-line for Blackrock from takeoff. And their last call said they thought they were approaching Blacksod. One possible explanation of this whole thing is...
Forum: Rotorheads
15th Mar 2017, 20:54
Replies: 2,047
Views: 1,308,109
Posted By rjsquirrel

There might be a tragic story building here. ...

There might be a tragic story building here.

The pinger as reported in the press is just off Blackrock Light (BBC News).

The traces of AIS flight path as shown on line show a circle of...
Forum: Rotorheads
11th Mar 2017, 23:36
Replies: 7
Views: 3,646
Posted By rjsquirrel

Word is the concept was put on the floor to draw...

Word is the concept was put on the floor to draw conversation, especially to draw it away from the 525. And it seemed to have worked. No engineers said the concepts were being seriously considered.
Forum: Rotorheads
10th Jun 2016, 15:45
Replies: 19
Views: 4,074
Posted By rjsquirrel

The diction is the relationship of the in plane...

The diction is the relationship of the in plane natural lag frequency to the rotor frequency. Soft in plane means that the lag frequency is below 1/rev, typically about 1/3 per rev. A stiff (hard) in...
Forum: Rotorheads
23rd Jul 2015, 12:14
Replies: 19
Views: 5,646
Posted By rjsquirrel

Many in the US think the greatest safety hazard...

Many in the US think the greatest safety hazard is to the tail rotor blade.
Forum: Rotorheads
17th Jul 2015, 11:06
Replies: 22
Views: 10,179
Posted By rjsquirrel

Pittsextra, Good comment, but I believe the...

Pittsextra,
Good comment, but I believe the actual piloting tasks and training "difficulty" is quite reasonable. I had a chance to fly the 609 simulator for a few hours, and frankly, it was a...
Forum: Rotorheads
15th Jul 2015, 15:26
Replies: 22
Views: 10,179
Posted By rjsquirrel

The "different category" argument means "don't...

The "different category" argument means "don't bring that up, it is a different bin in my brain".


If you compare the 139 with the 609 (same engines, same basic empty weight) and simply ask them...
Forum: Rotorheads
15th Jul 2015, 14:26
Replies: 22
Views: 10,179
Posted By rjsquirrel

You Pay for Speed, a Lot.

Take care with the performance hype. The speed of the 609 is terrific, a true 250 knots in the dash (but about 225 at long range cruise). There is no doubt the 609 will be safe, fast and...
Forum: Rotorheads
20th Mar 2015, 14:48
Replies: 8
Views: 2,314
Posted By rjsquirrel

Putting down a steel object on a steel deck...

Putting down a steel object on a steel deck produces short term loads that are like crash loads, it is not hard to get 2X from a simple fork lift operation. The loud noise hear when a load is set...
Forum: Rotorheads
9th Mar 2015, 11:53
Replies: 147
Views: 72,531
Posted By rjsquirrel

totogol, I have no beef, at all. I love the...

totogol,
I have no beef, at all. I love the potential for speed, and having flown the 609 simulator, I think its integration of controls, limits and displays is brilliant. But I'd love to know what...
Forum: Rotorheads
9th Mar 2015, 00:39
Replies: 147
Views: 72,531
Posted By rjsquirrel

21st Century is so 18th century

21st Century decided to debate:

TR Inefficiency== He says, "Not true, in fact just the opposite." Then he says, " in a hover the helicopter is far more efficient than a tiltrotor."
THAT was my...
Forum: Rotorheads
6th Mar 2015, 14:46
Replies: 147
Views: 72,531
Posted By rjsquirrel

What is often missed on this concept is the...

What is often missed on this concept is the awesome inefficiency of the tilt rotor type:

the 16,000 lb AW609 needs more power installed than the 21,000 lb Black Hawk, it weighs more empty weight,...
Forum: Rotorheads
2nd Nov 2012, 16:13
Replies: 39
Views: 5,974
Posted By rjsquirrel

HC is correct that some highly augmented types...

HC is correct that some highly augmented types can stretch the rules and get lower IFR speeds (the full FBW velocity stability Comanche was said to be controllable while IFR at minus 30 knots, after...
Forum: Rotorheads
20th Apr 2012, 16:12
Replies: 305
Views: 85,671
Posted By rjsquirrel

sans, Frankly, your point proves the opposite -...

sans,
Frankly, your point proves the opposite - NONE of those programs was even remotely COTS, and they wandered in the never-never land of requirements gone bad.

Example: The Canadian...
Forum: Rotorheads
19th Apr 2012, 13:37
Replies: 338
Views: 93,020
Posted By rjsquirrel

76 Ditch, shown right side up

Helicopter makes emergency landing in Gulf of Mexico | News - Home (http://www.click2houston.com/news/Helicopter-makes-emergency-landing-in-Gulf-of-Mexico/-/1735978/11034510/-/bldhk6/-/index.html)
...
Forum: Rotorheads
19th Apr 2012, 13:26
Replies: 305
Views: 85,671
Posted By rjsquirrel

The Canadian program seems to point out the...

The Canadian program seems to point out the difficulties that are being experienced by many programs world-wide, a product not just of the mistakes made by the company that produces the product, but...
Forum: Rotorheads
22nd Aug 2011, 13:28
Replies: 100
Views: 30,261
Posted By rjsquirrel

This thread brings to light the entire question...

This thread brings to light the entire question of quality assurance, and its cost. When a slug of impurity passes into your household oil burner, the flame distupts and you lose heat for a few...
Forum: Rotorheads
22nd Aug 2011, 03:08
Replies: 6
Views: 2,079
Posted By rjsquirrel

Not mandated, in fact most helos are certified...

Not mandated, in fact most helos are certified without Radar Alts so as to not be dependant on them as MEL kit.
On the other hand, virtually all offshore and executive medium IFR helos like the 76...
Forum: Rotorheads
15th Aug 2011, 18:28
Replies: 1,327
Views: 375,019
Posted By rjsquirrel

Sans, The 76D has new main rotor, tail rotor...

Sans,
The 76D has new main rotor, tail rotor and engines, accounting for maybe 50% of the whole job. The 609 is 100% new, so where does its miserable record of 20 years of development (and what -...
Forum: Rotorheads
15th Aug 2011, 14:32
Replies: 65
Views: 14,129
Posted By rjsquirrel

"Significantly more forensic psychiatric...

"Significantly more forensic psychiatric inpatients with tattoos had a diagnosis of anti-social personality disorder (ASPD) compared to patients without tattoos. Patients with ASPD also had a...
Forum: Rotorheads
12th Aug 2011, 22:48
Replies: 1,701
Views: 472,729
Posted By rjsquirrel

The crashworthiness and ballistic tolerance of...

The crashworthiness and ballistic tolerance of the V-22 is literally decades ahead of the Chinook, basically because it was designed decades afterward. The Chinook meets the basic standards of a...
Forum: Rotorheads
11th Aug 2011, 17:39
Replies: 21
Views: 4,154
Posted By rjsquirrel

Paul, The real answer lies in the handling...

Paul,
The real answer lies in the handling qualities of your helo without electronic stability. Most helos are pretty decent at moderate speed with no artificial stability, even though they are a...
Forum: Rotorheads
10th Aug 2011, 14:20
Replies: 1,327
Views: 375,019
Posted By rjsquirrel

Sultan, If the 76D has a 4 year delay, and that...

Sultan,
If the 76D has a 4 year delay, and that means to you some major problems with the design, then what does a 20 year delay in the 609 signify - a completely bankrupt design concept?
I suspect...
Forum: Rotorheads
7th Aug 2011, 16:47
Replies: 28
Views: 4,473
Posted By rjsquirrel

If all else fails, ask the Centers for Disease...

If all else fails, ask the Centers for Disease Control:

CDC - Malaria - Travelers - Malaria Information and Prophylaxis, by Country (http://www.cdc.gov/malaria/travelers/country_table/a.html)
...
Forum: Rotorheads
7th Aug 2011, 16:13
Replies: 24
Views: 4,862
Posted By rjsquirrel

The mechanic who signed off the annual screwed...

The mechanic who signed off the annual screwed up, obviously. Two choices:
1) corner him, and tell him to help you fix the problem, using his labor to install and track the new blades, and support...
Forum: Rotorheads
7th Aug 2011, 16:05
Replies: 21
Views: 4,154
Posted By rjsquirrel

Gomer is right, just continue and land. The...

Gomer is right, just continue and land. The autopilot (a 61 has one, BTW, it just has no nav tracking modes) makes it easier, but with hundreds of hours in non-autopilot helos on actual or simulated...
Forum: Rotorheads
7th Aug 2011, 16:00
Replies: 102
Views: 37,121
Posted By rjsquirrel

That is Sigfried Hoffman flying for the factory...

That is Sigfried Hoffman flying for the factory in Munich, back when it was MBB. A great pilot, with a fine helicopter in his hands. Dont worry about bunts, that rotor can do the job.
Forum: Rotorheads
7th Aug 2011, 15:56
Replies: 65
Views: 14,129
Posted By rjsquirrel

It is my opinion that excess in any direction,...

It is my opinion that excess in any direction, piercings, tatoos, dress, behavior, are all indicators that set off alarms when trying to decide who should be entrusted with 12 million worth of...
Forum: Rotorheads
29th May 2011, 18:28
Replies: 9
Views: 6,008
Posted By rjsquirrel

Mercedes maybe, Rolls No

A nice marketing move, but if you talk top of the line executive transport, many of us have seen and flown S-76s that make this 145 seem like a nice VW Passat by comparison. Perhaps it is best stated...
Showing results 1 to 35 of 218
 
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