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Search: Posts Made By: Jack Carson
Showing results 1 to 35 of 365
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Forum: Military Aviation
8th Feb 2024, 13:29
Replies: 30
Views: 7,179
Posted By Jack Carson

The H-53/SK65 De-Ice

The H-53/SK-65 aircraft were not equipped with main or tail rotor de-ice. The engine engine air particle separators (EAPS) negates any effectiveness of engine de-ice.
Forum: Rotorheads
28th Aug 2023, 20:00
Replies: 190
Views: 51,599
Posted By Jack Carson

EC-135 Crash Worthy Design

The EC-135 a Very Robust Aircraft built to the latest crash worthiness criteria. Those that survived this incident are living proof of this.
Forum: Rotorheads
26th May 2023, 13:54
Replies: 5
Views: 1,830
Posted By Jack Carson

NSHP Deja Vu

This smacks of a rebirth of the NSHP 21 years later.
Forum: Rotorheads
15th Mar 2023, 13:38
Replies: 49
Views: 12,137
Posted By Jack Carson

EC-135 Crash Worthiness

This discussion seems to have migrated from facts to speculation I am sure that the cause of this event will ultimately be determined. On the other hand having flown many variants of the EC-135 I...
Forum: Rotorheads
16th Feb 2023, 19:55
Replies: 40
Views: 15,057
Posted By Jack Carson

It happened before my time at SA, We were briefed...

It happened before my time at SA, We were briefed that the aircraft was in a high hover over the Housatonic River. The Stabilizer failed in the full trailing edge down position when the pilots...
Forum: Rotorheads
16th Feb 2023, 18:50
Replies: 40
Views: 15,057
Posted By Jack Carson

Experienced UH-60A Stabilaor Failure in cruise flight Circa 1985

On a return flight from Hartford, Ct to the Sikorsky Plant we experienced a stabilator shut down. It was determined that a mis-compare of the dual actuators caused the shut down. At failure the...
Forum: Rotorheads
11th Dec 2022, 23:13
Replies: 269
Views: 53,035
Posted By Jack Carson

The following chart was calculated compliments of...

The following chart was calculated compliments of Ray Prouty circa 1998. for the NSHP


Aircraft Model Gross Weight Down Wash Velocities (MPH) Down Wash Velocities at Half Fuel Load
S-61N 20,500...
Forum: Rotorheads
11th Dec 2022, 19:15
Replies: 269
Views: 53,035
Posted By Jack Carson

V-280 was the Right Choice

Having had an opportunity to fly the X-59 in the early 1980s and later follow the V-22 through its development and fielding, one has to wonder why one aircraft (tilt rotor) has progressed nicely...
Forum: Rotorheads
28th Aug 2022, 12:11
Replies: 344
Views: 170,978
Posted By Jack Carson

S-92 vs all the competitors

My point was not that the S-92 wasn’t selected but that the legacy machines were not even considered. I agree that military variants of a commercial S-92 may not have ever measured up. One only has...
Forum: Rotorheads
1st Aug 2022, 14:13
Replies: 344
Views: 170,978
Posted By Jack Carson

Twenty years ago the Nordic countries (NSHP) made...

Twenty years ago the Nordic countries (NSHP) made their decisions to procure European aircraft. Sikorsky and Boeing legacy aircraft the Blackhawk, Seahawk and Chinook were all rejected as old...
Forum: Rotorheads
22nd May 2022, 21:09
Replies: 26
Views: 4,731
Posted By Jack Carson

Aircraft Weight and Balance

Depending on fuel load, passenger weights and locations in the cabin, the aircraft could have been operating at or in excess weight and Balance limits.
Forum: Rotorheads
18th Mar 2022, 12:23
Replies: 344
Views: 170,978
Posted By Jack Carson

Numbers Tell a Different Story

Since 1979 more than 6000 variants of the UH-60/SH-60/MH-60 and S-70s have entered service around the world. Even Sweden procured H-60s after selecting the NH-90 under the NSHP program. By...
Forum: Rotorheads
8th Dec 2021, 15:16
Replies: 21
Views: 6,510
Posted By Jack Carson

Additional S-92 Modifications required to meet Canadian Requirements

There are a few modifications to the S-92 that had to be incorporated in the CH-148 to accommodate Canadian requirements. Blade and pylon fold are just a few. In addition, the CH-148 required an...
Forum: Rotorheads
15th Apr 2021, 13:21
Replies: 15
Views: 3,862
Posted By Jack Carson

MH-53E Hoist Controller

The MH-53E incorporated a limited 2 axis (FWD/AFT Left/Right) control on the hoist controller. This allowed the crew chief to position the aircraft over the load to be hoisted.
Forum: Rotorheads
5th Feb 2021, 17:27
Replies: 17
Views: 6,177
Posted By Jack Carson

That is Impressive

1000 machines in 20 years. I don't believe that the Sikorsky S-76 has reached this number after almost 44 years of production.
Forum: Rotorheads
27th Jun 2020, 20:05
Replies: 148
Views: 65,445
Posted By Jack Carson

Early Sikorsky FBW development

Good question Sycamore. There were two of us that did most of the front seat flying. The learning curve for flying the 4 axis system was very flat. By the end of each flight we were pretty...
Forum: Rotorheads
27th Jun 2020, 15:26
Replies: 148
Views: 65,445
Posted By Jack Carson

Early Sikorsky FBW development

Sikorsky with its SHADOW XS-76 demonstrator helicopter extensively evaluated helicopter FBW controls. At that time we concentrated on the types of controllers and did little evaluating more complex...
Forum: Rotorheads
9th Jun 2020, 19:39
Replies: 148
Views: 65,445
Posted By Jack Carson

CH-148 Cyclone FBW Certification?

Are there any other FBW S-92s in service around the world? Was the CH-148 Cyclone’s FBW flight control system certified by the US Government as well as Transport Canada? It appears that the lack...
Forum: Rotorheads
22nd Apr 2020, 13:53
Replies: 16
Views: 3,280
Posted By Jack Carson

Payload vs Range should also be a consideration....

Payload vs Range should also be a consideration. The S-76B is the least fuel efficient 76 variant. Range will be limited with 7 passengers.
Forum: Rotorheads
14th Oct 2019, 22:40
Replies: 11
Views: 3,485
Posted By Jack Carson

Basic Trig

The sine of 20 degrees (opposite over the hypotenuse) is 0.34 while the cosine (adjacent over the hypotenuse) of 20 degrees is 0.94. Nuff Said.
Forum: Rotorheads
14th Oct 2019, 21:40
Replies: 11
Views: 3,485
Posted By Jack Carson

Sikorsky was one of the first to cant the tail...

Sikorsky was one of the first to cant the tail rotor. At the time Sikorsky believed correctly that the Canted Tail Rotor provided additional vertical lift at a very small total increase in tail...
Forum: Rotorheads
1st Sep 2019, 20:53
Replies: 71
Views: 51,062
Posted By Jack Carson

How Old was this B3?

I flew both the B2 and theB3 in Phoenix, AZ more then 10 years ago. At that time there were issues with the belt drive system. Neither bird was equipped with the dual hyd system.
Forum: Rotorheads
1st Sep 2019, 18:33
Replies: 71
Views: 51,062
Posted By Jack Carson

A simple hydraulic pump drive failure?

With all of the discussions concerning hydraulic flight control transparency why hasn’t the discussion addressed the possibility of a failure hydraulic pump belt drive. This could also result in the...
Forum: Rotorheads
2nd Jul 2019, 13:39
Replies: 65
Views: 27,552
Posted By Jack Carson

A109E Takeoff Go Around Limitation

I received a SPIFR qualifications in the B-230UT, A-109E and the EC-135P2/T2. All aircraft were equipped with 3 axis autopilots. Coupled ILS approaches were straight forward. As the glide slope was...
Forum: Rotorheads
13th Jun 2019, 21:35
Replies: 145
Views: 102,478
Posted By Jack Carson

A-109E Auto Pilot

A few years back I received a SPIFR qualification in the A-109E. At the time, the specific autopilot installed by Agusta had a limitation on the use of the take off/go around mode. Specifically, a...
Forum: Rotorheads
19th Apr 2019, 15:49
Replies: 444
Views: 155,294
Posted By Jack Carson

IFMU There are always compromises. Having...

IFMU
There are always compromises. Having enough blade twist to a achieve hot high hover capabilities while achieving reasonable cruise speeds and range is challenging.
Forum: Rotorheads
18th Apr 2019, 20:32
Replies: 444
Views: 155,294
Posted By Jack Carson

The X-59 36 Years ago

I had an opportunity to fly the X-59 with the two J60 engines (3000 lbs. thrust each) installed in March of 1983. It was a short 45 minute flight that began with a short running takeoff followed by...
Forum: Rotorheads
10th Feb 2019, 16:14
Replies: 119
Views: 50,013
Posted By Jack Carson

Autopilot Vs NVGs

I apologize if this issue has been previously addressed. My experiences include flying single engine B-206L and AS-350 machines at night, unaided, in the deserts surrounding Globe, AZ and operating...
Forum: Rotorheads
31st Jan 2019, 14:46
Replies: 344
Views: 170,978
Posted By Jack Carson

2002 NSHP Decided

The Nordic Standard helicopter Program (NSHP) was decided in the spring of 2002 with Norway, Sweden and Finland selecting variants of the NH-90 over variants of the S-92. Denmark was never truly...
Forum: Rotorheads
22nd Oct 2018, 16:45
Replies: 65
Views: 15,015
Posted By Jack Carson

Does the 609 have a traditional collective power...

Does the 609 have a traditional collective power control or is it configured with the V-22 type Blottle?
Forum: Rotorheads
8th Oct 2018, 18:51
Replies: 70
Views: 15,605
Posted By Jack Carson

Having flown the AS-350B2 at higher elevations...

Having flown the AS-350B2 at higher elevations (6000 to 10000 ft Pressure altitude) I was always careful to calculate the aircraft performance limitations before and during the flight. At altitudes...
Forum: Rotorheads
4th Jul 2018, 11:26
Replies: 648
Views: 221,407
Posted By Jack Carson

Tigerfish, As a 70 something with more than 40...

Tigerfish,
As a 70 something with more than 40 years flying experience in a wide variety of machines, I can assure you that I do not have an axe to grind concerning the V-22. You are correct in that...
Forum: Rotorheads
1st May 2018, 20:49
Replies: 44
Views: 19,525
Posted By Jack Carson

I agree with Claudia. I have experienced...

I agree with Claudia. I have experienced multiple induced hydraulic failures during training and subsequent check rides in the AS-350B2 and B3. The surprise factor can be quite startling. In most...
Forum: Rotorheads
30th Apr 2018, 19:26
Replies: 44
Views: 19,525
Posted By Jack Carson

At this point it is difficult to determine...

At this point it is difficult to determine exactly what caused this mishap. D-49 provides a very compelling scenario for a late-night flight with some element of get home itis. Without speculation,...
Forum: Rotorheads
12th Mar 2018, 14:46
Replies: 464
Views: 182,340
Posted By Jack Carson

It appears that the engine was still powering the...

It appears that the engine was still powering the rotor after entering the water. The AS-350 has a relatively low inertia rotor and would have nearly stopped after the initial collective pull. The...
Showing results 1 to 35 of 365
 
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