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Bell UH-1

Posted: Fri Aug 28, 2020 6:06 pm
by bomber
With doing the ASK-13 lift/normal flight model and working from home it all became a bit of a drudge..... put one lap top down and pick up another one.... So I've taken a few months off to re-charge.

Ya might have noticed I'd been a bit quiet...

Anyway I thought what I'd do on my return is rather than jump straight back into the ASK-13, I'd do the iconic 'Huey' with a jsbsim flight model.

regards

Simon

Re: Bell UH-1

Posted: Fri Aug 28, 2020 10:12 pm
by IAHM-COL
oh ! nice a Huey JSBsim is a very welcome addition

Re: Bell UH-1

Posted: Fri Aug 28, 2020 10:12 pm
by IAHM-COL
i'm glad you got days off, too.

Re: Bell UH-1

Posted: Sun Aug 30, 2020 11:10 am
by bomber
And I've just discovered who thinks he owns it...

So it's a win win...

Simon

Re: Bell UH-1

Posted: Tue Sep 01, 2020 6:21 pm
by bomber
She's weight and balanced and sat on the runway... with non of that slow spinning around malarky

https://drive.google.com/file/d/1Br1Pzq ... sp=sharing

Just the engine, props and moments to do now.....

Simon

Re: Bell UH-1

Posted: Sat Sep 19, 2020 11:09 am
by bomber
I thought the Scorpion gunships control system would be harder than a single rotor helicopter, what with having 4 rotors and 2 turbines.... But I was SOOOOOO wrong.

There is so much going on with so much interaction.... and procession ! who knew that JSBsim has working procession built in to it's propeller code ?

Re: Bell UH-1

Posted: Sat Sep 19, 2020 2:18 pm
by IAHM-COL
LOL
Seems the Huey is Hueying you?

What is that working procession exactly?

Re: Bell UH-1

Posted: Sat Sep 19, 2020 3:09 pm
by bomber
Well imagine a spinning rotor on a stationary helicopter...

When it comes to prop moments there's just the 1, that of torque expressed as n_moment-lbsft..

But if the helicopter rotates having a p-rads-sec... The propeller suddenly gets a m_moment-lbsft value... Equally true if the helicopter rotates having a q-rads-sec generating a l_moment-lbsft.

The result of this is that if the helicopter rolls the nose raises and falls and if the helicopter pitches the helicopter rolls to the right or left

Re: Bell UH-1

Posted: Sun Sep 20, 2020 4:20 pm
by bomber
It's like riding a bull at the moment.

Re: Bell UH-1

Posted: Mon Sep 21, 2020 5:00 am
by IAHM-COL
bomber wrote:It's like riding a bull at the moment.

done that. being there.