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Forum: Rotorheads
27th Jun 2020, 21:05
Replies: 147
Views: 53,787
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, 16:26
Replies: 147
Views: 53,787
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, 20:39
Replies: 147
Views: 53,787
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, 14:53
Replies: 16
Views: 2,624
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, 23:40
Replies: 11
Views: 2,906
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, 22:40
Replies: 11
Views: 2,906
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, 21:53
Replies: 68
Views: 42,540
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, 19:33
Replies: 68
Views: 42,540
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, 14:39
Replies: 65
Views: 23,280
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, 22:35
Replies: 144
Views: 91,462
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, 16:49
Replies: 222
Views: 80,936
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, 21:32
Replies: 222
Views: 80,936
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, 17:14
Replies: 119
Views: 44,426
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, 15:46
Replies: 104
Views: 72,808
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, 17:45
Replies: 49
Views: 10,481
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, 19:51
Replies: 70
Views: 12,408
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, 12:26
Replies: 632
Views: 153,224
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, 21:49
Replies: 44
Views: 17,228
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, 20:26
Replies: 44
Views: 17,228
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, 15:46
Replies: 463
Views: 152,804
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...
Forum: Rotorheads
8th Jan 2018, 19:22
Replies: 20
Views: 5,524
Posted By Jack Carson

Helicopter by the Pound

I/C
Helicopters, like salami or cheese at the deli can be pretty accurately priced by the pound. Using your numbers a the V-22 would be approximately $1600/lb, the (aged)CH-47F would be $540/lb....
Forum: Rotorheads
7th Jan 2018, 17:39
Replies: 20
Views: 5,524
Posted By Jack Carson

MH-53K Updates?

Happy New Year Y’all
Just curious, does anyone have any specific information on the progress of the MH-53K King Stallion program. It appears that there is plenty of PR info surrounding it...
Forum: Rotorheads
16th Dec 2017, 15:26
Replies: 1,325
Views: 300,927
Posted By Jack Carson

Armed S-76

212 Man, as near as I can recollect, Sikorsky delivered UH-76As to the either the US Government or one of the Government security contractors in the mid-1980s. These aircraft incorporated armament...
Forum: Rotorheads
4th Oct 2017, 15:37
Replies: 632
Views: 153,224
Posted By Jack Carson

I agree any accident is one too many. It will be...

I agree any accident is one too many. It will be argued that I have just dug up old bones as a V-22 hater. That is far from the truth. I hope our US servicemen and women have the best and safest...
Forum: Rotorheads
14th Sep 2017, 18:34
Replies: 447
Views: 164,763
Posted By Jack Carson

Landing Gear Strut input to Flight Controls

Does the Raider use full or limited motion flight controls? The S-76 SHADOW aircraft was used as part of the early development of the Comanche flight control system. The SHADOW utilized a limited...
Showing results 1 to 25 of 349
 


 
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