Simulating low headspeeds?

[trillian]

Just curious how well AccuRC does if you drop the headspeed way down, like 1100 rpm for a 700 size heli as an example ?

I just discovered that in Phoenix dropping the headspeed a bit is an easy way to get the power / collective a bit more realistic. The sound only changes a little bit. I tend to think the collective doesn't react quite the way it does in real life at a really low headspeed but it has been useful at just making the models a bit more lifelike in general. It would be nice though to have a really detailed simulation of flying at low headspeeds.

[bigpops]

It does quite well. It was one of the first things I tried after adjusting the flybarless settings. You can really feel the difference. Everything gets lazy and needs lots of collective. 1100rpm is about as low as it will let you set the governor at the moment.

However, I hope in future they'll give the option to fly on one "virtual" 6S pack to keep the weight down.

[Nick B]

Never did it on accuRc but neXt is very good.I will do a demo vid for you

[Mike Sanders]

Thanks for that post Trillian. As a result I lowered the headspeed in Phoenix on the TDR (I can't afford a real one). I put it down from 1800 to 1400. It did seem much more realistic although I have only ever seen them fly, I have never had a go myself.
It just felt like a better helicopter.

[p4ddy]

Never did it on accuRc but neXt is very good.I will do a demo vid for you

[p4ddy]

Dam that sim even has birds flying around I LIKE that It needs a random dog walker for ultimate authenticity LOL

[Nick B]

It's pretty damn good Paddy,it was only 57 quid and i use the rf tx.It's heli's only and the interface is dead easy to use.Unfortunately the phoenix dongle will not work but you can get a lead for around a fiver that will work.

I love flying under spots,you turn the fire off also.

[trillian]

It's pretty damn good Paddy,it was only 57 quid and i use the rf tx.It's heli's only and the interface is dead easy to use.Unfortunately the phoenix dongle will not work but you can get a lead for around a fiver that will work.

I love flying under spots,you turn the fire off also.

Interesting. Will it work with the RF 3.0 controller? I still have RF 3.5 with the interlink TX unit but haven't used it in ages.

[Nick B]

neXt - CGM rc Heli Simulator


Compatible USB controllers:

any remote control, which is connected to the computer per USB simulator cable. All interfaces which are delivering a joystick signal will work (instruction manual).
X box 360 controller (Windows: install the controller supplied driver, OSX: separate drivers, link follows)
PS3 controller (OSX: no driver installation needed, Windows: separate drivers, link follows)
Reflex XTR interface in joystick mode (instruction manual)
Aerofly Professional and Aerofly 5 interfaces and transmitter (instruction manual)
RealFlight6 Controller


Here you can purchase compatible USB transmitters or USB cables:

RC Tech 6 CH Flight Simulator Remote Control: Amazon, DealeXtreme - Cool Gadgets at the Right Price - DX Free Shipping Worldwide, XHeli.com - RC Helicopters & Multi-Rotor R/C Drones Online SuperStore
International: USB Simulator cable XTR/AeroFly/FMS (4-channel USB cable and three buttons)
International: Wireless USB Adapter from HobbyKing (#26000002/24613 Wireless 9 in 1 Simulator Adapter)
International: USB Flight Simulator Cable Super Sim X, All-In-One (use mode 2)
Germany: FS SM100
RCWare RX2SIM Wireless Multi-Sim Adapter, Freakware (no seperate USB cable needed)
USA USB cable: USB SIMULATOR CABLES SET
USA USB cable: GWS, FUTABA/HITEC (ROUND PLUG), ...


These USB cables and USB transmitters are not compatible:

Phoenix Dongle
Modelcraft 6 Channel USB Controller
BMI Gamepilot 6, 8 and 8.5 Controllers
Pichler FMS USB Adapter #C6091 (only the version with switch is compatible because you have to switch into mode 2))

[Ade_Law]

AccuRC is very unlike other sims, the way the physics/aerodynamics work is closer to what you see in CFD for full size and F1 stuff. Its why AccuRC's minimum specs are a bit higher than the others because its doing a lot more maths and that takes CPU power.

so to answer the original question...

"very very well"

[scallybert]

Out of curiosity, who has done the CFD-style work ?

[tomatwalden]

Out of curiosity, who has done the CFD-style work ?

To be fair, it's not really computational fluid dynamics (CFD) in AccuRC. Normally the term CFD would be associated with techniques involving finite element analysis (FEA) - solving the Navier-Stokes equations etc. None of that can be done in real-time on a sim. It takes hours sometimes of computing power to solve a single point in time for a relatively simple 3D space.

Given the huge impracticalities of trying to use CFD/FEA in real time, I would assume that AccuRC applies relatively simple models in terms of aerodynamics - more complex than Phoenix or Realflight, but nothing like FEA. As far as I can tell, the AccuRC model breaks down the components parts of the heli and models them individually. Whereas RF or Phoenix apply more "macro" level models.

[scallybert]

To be fair, it's not really computational fluid dynamics (CFD) in AccuRC. Normally the term CFD would be associated with techniques involving finite element analysis (FEA) - solving the Navier-Stokes equations etc. None of that can be done in real-time on a sim. It takes hours sometimes of computing power to solve a single point in time for a relatively simple 3D space.

Given the huge impracticalities of trying to use CFD/FEA in real time, I would assume that AccuRC applies relatively simple models in terms of aerodynamics - more complex than Phoenix or Realflight, but nothing like FEA. As far as I can tell, the AccuRC model breaks down the components parts of the heli and models them individually. Whereas RF or Phoenix apply more "macro" level models.

Quite. We have people that do that kind of stuff here; and I have a vague idea of the (significant - 100s of cores) computational resources required to do some (apparently) quite simple things.

[And I did use the vague term 'CFD-style', after Ade referred to CFD.]

I was curious as to who did the work, as they might be (professionally) related to someone I know.

[muscleflex]

You can use REALFLIGHT tx usb on this sim???

It's pretty damn good Paddy,it was only 57 quid and i use the rf tx.It's heli's only and the interface is dead easy to use.Unfortunately the phoenix dongle will not work but you can get a lead for around a fiver that will work.

I love flying under spots,you turn the fire off also.

[r4nd0m]

You can use REALFLIGHT tx usb on this sim???

if you got the TX version yes - the dongle / transmitter version doesnt work