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March 10

KlausM

Two new aircraft introductions in one day… And they’re real aircraft. This is just great. :sunglasses:

It might only be a ten place Super Cub speed but it goes vertical :+1:

This is a little better picture: Robinson Helicopter Company

March 10

jjbaker

Oh! So it does have a tail. :face_exhaling:

Was getting a bit worried that about half a helicopter would be going into service and nobody was going to say anything…

March 10

Bruce

Still has the 2-blade teetering rotor system (according to the Robinson picture). Its a liability surely? whether it is effective or not, it has such a bad reputation, why wouldn’t you avoid it on a new design?

2 replies
March 10 ▶ Bruce

rkphillipsjr

So you are against taildraggers, for the same reason, I’m guessing: they don’t forgive pilot incompetence.

1 reply
March 10

gmbfly98

You base that assertion on what information, exactly?

March 10 ▶ rkphillipsjr

Bruce

Im a taildragger pilot. My point is not whether it works or not, or whether its safe. Im not in a position to judge. That feature however has been extremely controversial over the years and many people wouldnt go near a Robbie because of it. Here in New Zealand, government agencies are banned from chartering them. I’m a product designer by trade. When you are designing a product to compete with well established market players, why would you specifically include a controversial feature that will alienate a large percentage of potential customers?

2 replies
March 10

gmbfly98

There really isn’t anything “controversial” over a 2-bladed teetering rotor system. The Bell 206 is one of the most popular helicopters and uses a 2-bladed rotor.

As with anything in aviation, and in particular, helicopter rotor designs, there are advantages and disadvantages to everything. The main disadvantage everything thinks about with a 2-bladed rotor system is mast bumping, but if flown correctly, it’s not really a problem. And one big advantage to a 2-bladed rotor is that it takes up a lot less hangar space than a 3-or-more-bladed rotor system does (unless you add in a complicated and heavy blade-folding system), and it’s less expensive to produce.

Where Robinson got their “dangerous reputation” from was a lot of low-time helicopter instructors teaching new helicopter pilots in a helicopter (the R22) that was not built as a training aircraft. The “problem” was that the R22 (and the R44 too, though to a lesser extent) uses a comparatively light-weight rotor system (compared to, say, a Huey or 206), so when flown incorrectly you can find yourself in a bad situation more quickly. So just as the FAA did for the MU-2, they created a special SFAR to ensure that instructors and pilots are aware of the characteristics of the Robinson rotor systems and fly the aircraft correctly.

But 2-bladed rotor systems aren’t the only ones with disadvantages. All other rotor designs also have their own advantages and disadvantages, and variations in implementation.

March 10 ▶ Bruce

rkphillipsjr

Obviously, when one wants to own the market, one goes with the value proposition, the two-blade teeter.
And guess who owns that market?
(The only two helicopters that I’ve been in were a Bell 47 with no doors, and a JetRanger. I seem to have forgotten how dangerous they were, perhaps I shouldn’t have gotten in. Though the 206 had many thousands of hours …)

March 10

davidbunin

It has a four-axis autopilot? They have a time machine?

1 reply
March 10 ▶ davidbunin

gmbfly98

Pitch, Roll, Yaw, Collective/Throttle

1 reply
March 10

RationalityKeith

It is sizeable.

Robinson does not reveal rotor system, there’s has had problems…

Web site flash not specifics.

March 10 ▶ gmbfly98

Arthur_Foyt

Collective/Throttle is what I would call a “channel” not an axis. YMMV.

2 replies
March 11

chris3

Anyone know why Global News Wire have this press release in IMC level contrast? Nearly impossible to read!

1 reply
March 11 ▶ chris3

jjbaker

Would you elaborate what you mean with IMC level contrast? The article found on GNW is likely a 1:1 copy and paste or aggregated content and as submitted.

1 reply
March 11 ▶ Arthur_Foyt

gmbfly98

“Axis”, as in another servo is involved, not axis as in a mathematical grid sense. But I didn’t make up the terminology the autopilot manufacterers use.

March 11 ▶ jjbaker

chris3

I’m not sure if I can post a screenshot. The Avweb and Robinson versions are legible, so it might be a style choice on the Global News Wire Site.

2 replies
March 11 ▶ chris3

jjbaker

I guess Russ hyperlinked it to refer to the source.
It opens and displays normally. In unedited form its a mile and a half too long and reads more like a avertorial, rather than a news-bit.

March 11

chris3

Strange, I see grey text on white background, hence my IMC reference.

March 11 ▶ chris3

RationalityKeith

Robinson’s web site is not aviation quality.

March 13 ▶ Arthur_Foyt

Red

6 equations of Motion. Stuart Platform for FFS Is for Roll Pitch Yaw heave sway surge. Helicopter sims often have another 3 axis in a separate vibration platform.

An Axis is correct term as it relates to a reference frame. Whether that be a linear or rotational reference frame. A Channel isn’t really correct as a channel may incorporate many redundant subsystems that make up that autopilot axis. For Instance twin FADEC’s for a single engine It is twin Channel single Axis of Throttle.