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Hill Helicopters HX50

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Hill Helicopters HX50

Old 7th Dec 2023, 17:31
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So when the Fuel Shut-OFF is 'ON' does that mean its open or shut (I know I know but really)
How about Fuel Supply ON / OFF ?


[/QUOTE]
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Old 7th Dec 2023, 17:34
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same in the R22/R44, it's always referred to as the "fuel shut off valve"

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Old 7th Dec 2023, 17:35
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Hard to sell any deposits based on an engine and gearbox design alone.

Originally Posted by Expatrick
Please forgive an amateur's (obvious) ignorance but, in a project like this, wouldn't it have been better to fully develop the engine / gear box first - before building the rest around it?

Last edited by hargreaves99; 12th Dec 2023 at 16:13.
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Old 7th Dec 2023, 17:37
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CAD made things a lot easier in that regard.
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Old 7th Dec 2023, 18:18
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Does anyone know the answers to these questions?

CRAN?



Originally Posted by Richard Fiedorowicz
Maybe some meat on the bone around the hard bits would shut up those who have not placed a deposit - as examples:-

(1) How many engines will be built and tested prior to production and what time scale would be required?
(2) How many total engine hours run makes for a trusted engine design fit for purpose.
(3) What structural testing will take place for various parts - such as load points for the engine and main gearbox.
(4) How will the gear boxes be tested.

I am sure it will fly and customers will get their aircraft.


richard
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Old 7th Dec 2023, 21:11
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The video of the main presentation is now up on their YouTube channel.
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Old 7th Dec 2023, 21:41
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That switch panel is lacking common sense.

The Fuel switch should show "FUEL" as its main caption, with the up position marked "ON" and the 90 right position "SHUTOFF"
The Gen switch has the lower position marked RESET and OFF, normally it would be OFF and then a spring-loaded spot below that marked "RESET"
The engine seems to lack ducting to take the gases from the N1 turbine (has proper inlet duct from combustor) and guide them onto the N2 wheel. Just looks like the hot gas expands into a big box and the only way out is the N2 wheel.
It must be for space considerations, but using 2 x 45 degree gearboxes to get the driveshaft from the engine to the transmission is introducing complexity and more ways to develop problems.

But let's wait and see. And wait. And wait.
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Old 7th Dec 2023, 23:03
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Originally Posted by tbtstt
I nearly switched it off on several occasions because of those two; irrespective of your view on this project, I think Richard Hill comes across well during the streams/presentation. Those two clowns chiming in added absolutely nothing and, in my view, actually take from the whole project rather than adding to it. Perhaps they are making a big contribution behind the scenes, but they should be kept off the camera in future.
Is this the first Hill video that you’ve watched? Those ‘two clowns’ have been part of the marketing effort for the past few years. One is a an experienced flight instructor (with his own YouTube channel) and the other has obviously flown around the world. They aren’t going anywhere.

And, btw, who is ‘Richard’ Hill? You’ve just been watching a long presentation from Dr Jason Hill (AKA CRAN, FWIW).
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Old 7th Dec 2023, 23:09
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Originally Posted by Ascend Charlie
The engine seems to lack ducting to take the gases from the N1 turbine (has proper inlet duct from combustor) and guide them onto the N2 wheel. Just looks like the hot gas expands into a big box and the only way out is the N2 wheel.

Hill states at 1:04:22 that “we have an inter duct that’s missing from this because it’s a stand”.
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Old 8th Dec 2023, 01:13
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Originally Posted by Bravo73
Is this the first Hill video that you’ve watched? Those ‘two clowns’ have been part of the marketing effort for the past few years. One is a an experienced flight instructor (with his own YouTube channel) and the other has obviously flown around the world. They aren’t going anywhere.

And, btw, who is ‘Richard’ Hill? You’ve just been watching a long presentation from Dr Jason Hill (AKA CRAN, FWIW).
Top tip: don't have a conversation about someone called Richard while you are in the middle of typing a forum post!

My apologies, it was of course Jason, not Richard! And yes, I have caught most of the web presentations so far, so I am aware of the identity and background of Mischa and Ruben. I know they are an established part of the program and have been for some time - and I am sure they are contributing plenty off stage - but I personally thought their stage antics (and volume) detracted from the presentation.

Richa- no, Jason, seems to absolutely know his product inside out. The "hype men" felt unnecessary and somewhat at odds with the otherwise professional presentation of the whole thing. But hey, maybe I'm just out of touch and the crowd like to have the main speaker get interrupted and spoken over.

I chatted with two people today (one engineer and one pilot) who were both at the presentation yesterday and that was their only real critique of the event. Otherwise they were impressed with what they saw and what they learned from other Hill staff afterwards.
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Old 8th Dec 2023, 08:14
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Originally Posted by Ascend Charlie
That switch panel is lacking common sense.

The Fuel switch should show "FUEL" as its main caption, with the up position marked "ON" and the 90 right position "SHUTOFF"
The Gen switch has the lower position marked RESET and OFF, normally it would be OFF and then a spring-loaded spot below that marked "RESET"


But let's wait and see. And wait. And wait.
I don't disagree with you in the round but the gen switch could be a simple 2 position switch with the OFF also being RESET. While most ac I've flown have a separate reset position (usually to cycle power to gen control units and such) there are some setups that inherently do that in the OFF position. Not seen one in aviation, but they do exist outside, so I could believe Hill has included that for simplicity.

Aside from that, I find the display HMI fairly honking. Speed as a strip across the top of the display is pretty counter-intuitive for one. That said, for an "experimental" changing software is easy if you gaff off all the niceties of assurance levels. However, if you're adhering to DO standards, the PFD would be far from easy to change overnight, unless they've come up with some pretty innovative software process to go with the rest of it.
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Old 8th Dec 2023, 08:22
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Originally Posted by Bell_ringer
Are those switches supposed to be skew?
It doesn't look like a supercar quality finish, unless its Fiat surplus.
This section looks a bit cheap and tacky, fresh from the shed, so hopefully either a bad photo or a pre-prod finish.


Is the fuel switch an electrical switch or a mechanical switch? Makes no sense it looks like a mechanical switch but positioned where you would an electrical switch. I suspect its a marketing switch!
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Old 8th Dec 2023, 08:57
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Airspeed strip along the top is a big no-no from me. That's unlike any other industry convention
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Old 8th Dec 2023, 10:06
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Originally Posted by SansAnhedral
Boy that TE looks awfully thick and the abrasion strip looks like paint (particularly how the color goes around the tip which also has no cap detail)...my money is on these being mockups
Sans, you studied the photo more carefully than I initially did, but I agree these look like mockups for the display helicopters. Might be the same for the fenestron components? Still, it looks like good progress being made on various elements, even if some is shown in mock-up form.
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Old 8th Dec 2023, 10:13
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silence from crab? most unusual !
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Old 8th Dec 2023, 10:18
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Originally Posted by hargreaves99
same in the R22/R44, it's always referred to as the "fuel shut off valve"
It is a simple thing for Hill to address but I can see the point Jetstream was making. In the short clip of the R22/R44 shut off valve, the labels on the valve selector are simply "Fuel" with either "on" or "off". Little room for confusion.

Reminds me of the sad story about the words "flammable" and "inflammable" which actually mean the same thing. But some people believed "inflammable" meant "not flammable" when it came to children's clothing.
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Old 8th Dec 2023, 10:42
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In one of the photos shared by chopper2004 in post #1291, the skidded version shows the skids project slightly forward of the front 'cross tube'. But I don't think this is meant to serve as a boarding step as it seems too close to the front of the cabin door? In that case, why not adopt the style of skids as on the EC120? While I am still not used to that look, they seem to have less prospect of snagging a wire than traditional helicopter skids. Surely Eurocopter (Airbus Helicopters) wouldn't hold a patent on such a design feature?? Avoids the need for a WSPS to be mounted under the fuselage.

On the subject of skids, they sure look low and splayed apart on the HX50. Skids on JetRanger (and UH1) were originally quite low and sleek, but you rarely see such low skids on JetRangers now, at least not in Australia. So what has caused that shift? Fairings on the cross tubes are also relatively rare notwithstanding the drag reduction they provided. On the other hand, low faired skids still seem the norm on LongRangers.
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Old 8th Dec 2023, 11:53
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Originally Posted by helispotter
In one of the photos shared by chopper2004 in post #1291, the skidded version shows the skids project slightly forward of the front 'cross tube'. But I don't think this is meant to serve as a boarding step as it seems too close to the front of the cabin door? In that case, why not adopt the style of skids as on the EC120? While I am still not used to that look, they seem to have less prospect of snagging a wire than traditional helicopter skids. Surely Eurocopter (Airbus Helicopters) wouldn't hold a patent on such a design feature?? Avoids the need for a WSPS to be mounted under the fuselage.

On the subject of skids, they sure look low and splayed apart on the HX50. Skids on JetRanger (and UH1) were originally quite low and sleek, but you rarely see such low skids on JetRangers now, at least not in Australia. So what has caused that shift? Fairings on the cross tubes are also relatively rare notwithstanding the drag reduction they provided. On the other hand, low faired skids still seem the norm on LongRangers.
They do. IIRC, Bell tried to use same concept with 429, but lost in court
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Old 8th Dec 2023, 13:40
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Originally Posted by Bell_ringer
the old tums up emoji.
Here you go -


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Old 8th Dec 2023, 14:11
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Skids

[QUOTE=helispotter;11553455]In one of the photos shared by chopper2004 in post #1291, the skidded version shows the skids project slightly forward of the front 'cross tube'. But I don't think this is meant to serve as a boarding step as it seems too close to the front of the cabin doo

I was told by Dave the head of composite that the forward projection is purely to reduce drag
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