Author Topic: I can't spin a spit and FM concerns (vid)  (Read 2987 times)

Offline SFRT - Frenchy

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I can't spin a spit and FM concerns (vid)
« on: March 24, 2014, 04:48:47 PM »
Were were sharing POVs on an another thread about stalling/spin/rudder. Created my own not to highjack the other one. I was talking about the plane I mostly fly and how the Thunderbolt nose would get 'stuck' nose up on wing overs. Or just wobbeling around not abruptly and significantly droping. Here's a quick vid for discussion. And bear with me, that was done quickly for demonstration purposes, I don't have a 'obvious' vid of what I was describing but that's close enough.

In the vid, I have a nice tail slide even if the nose doesn't drop fast enough I think. Then I have that ' nose high wobbeling around' example, and finally I cannot make a dam Spitfire spin. I'm pretty sure they did when stalled while full rudder is applied. :P

I think as good as the FM is, something gets all screewy in the low speed department.

https://www.youtube.com/watch?v=uSzvthRnx8o

What you guys think?

Edit : I'm learning  :aok I learned that what I perceive as 'the screewy behavior' is generated by having the engine on even when at idle. I'm surprised the forces generated by the prop of an engine at idle have so much influence on the FM :
https://www.youtube.com/watch?v=586lFSpIxsw
« Last Edit: March 24, 2014, 07:09:40 PM by SFRT - Frenchy »
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Offline BluBerry

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Re: I can't spin a spit and FM concerns (vid)
« Reply #1 on: March 24, 2014, 04:50:43 PM »

Offline The Fugitive

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Re: I can't spin a spit and FM concerns (vid)
« Reply #2 on: March 24, 2014, 04:51:12 PM »
Are you using combat trim? The 38 can get it's nose stuck in the air when rolling over at the top of a loop when you get it real slow. I knock off combat trim when Im  in a loop just to be sure not to get it stuck.

Offline SFRT - Frenchy

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Re: I can't spin a spit and FM concerns (vid)
« Reply #3 on: March 24, 2014, 04:58:24 PM »
Ahh .. no combat trim, no stall limiter.
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Offline SFRT - Frenchy

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Re: I can't spin a spit and FM concerns (vid)
« Reply #4 on: March 24, 2014, 04:59:28 PM »
about sex mostly.

You must not have enough then  :lol
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Offline BluBerry

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Re: I can't spin a spit and FM concerns (vid)
« Reply #5 on: March 24, 2014, 05:01:47 PM »
my lady is 7 months pregnant.. you remember that time I am sure.  :rock

Offline danny76

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Re: I can't spin a spit and FM concerns (vid)
« Reply #6 on: March 24, 2014, 05:02:00 PM »
I can spin anything right into the floor no problem ;)
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Offline FLS

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Re: I can't spin a spit and FM concerns (vid)
« Reply #7 on: March 24, 2014, 05:11:33 PM »
Ahh .. no combat trim, no stall limiter.

How much fuel?

Offline SFRT - Frenchy

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Re: I can't spin a spit and FM concerns (vid)
« Reply #8 on: March 24, 2014, 05:12:34 PM »
my lady is 7 months pregnant.. you remember that time I am sure.  :rock

You poor devil, saddly the worst is yet to come  :t

I can spin anything right into the floor no problem ;)

 :lol I still bet you can't spin a Spitfire.
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Offline lunatic1

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Re: I can't spin a spit and FM concerns (vid)
« Reply #9 on: March 24, 2014, 05:17:09 PM »
did you push the I button to push the nose down??????? :joystick:
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Offline Skyyr

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Re: I can't spin a spit and FM concerns (vid)
« Reply #10 on: March 24, 2014, 05:18:38 PM »
my lady is 7 months pregnant.. you remember that time I am sure.  :rock

lol.
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Offline SFRT - Frenchy

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Re: I can't spin a spit and FM concerns (vid)
« Reply #11 on: March 24, 2014, 05:24:44 PM »
Fuel ... 75% I think on both, maybe only 50 on the Spit. Does fuel really matter? On the Spit 16 between 25% and 100% it's only 600 lbs. On the Jug it's 1,300lbs. Which is 10% of the total weight on the Jug, 6% on the Spit.

In the Pilatus I fly, full fuel or low fuel doen't affect 'how' the plane stalls, but more like 'when'. But all the fuel is in the wing. Since it's a debate on 'how', I don't think it's that relevant except maybe if the Spit has way backward fuselage tanks.
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Offline FLS

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Re: I can't spin a spit and FM concerns (vid)
« Reply #12 on: March 24, 2014, 05:29:33 PM »
:lol I still bet you can't spin a Spitfire.

How is this?

https://www.amazon.com/clouddrive/share?s=NmuGIPTyTMgiNKw75MrjVQ

The Spitfire pilot manual states that a full rear fuselage tank will cause the nose to go up near the stall.

Offline Gemini

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Re: I can't spin a spit and FM concerns (vid)
« Reply #13 on: March 24, 2014, 05:31:20 PM »
Is the 'can't spin a spit' thing serious, or am I missing some in-joke?

Just put the stick to 4-5 o'clock and apply full right rudder. You're spinning.


Offline Karnak

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Re: I can't spin a spit and FM concerns (vid)
« Reply #14 on: March 24, 2014, 05:34:45 PM »
Do you "spin" as in it stays spinning when you let the controls go neutral or that you can't get one wing to stall before the other?

Per Boscombe Down testing the Spitfire had to be held in a spin otherwise it would stop on its own.  IIRC the Mk XIV would do about 1080 degrees before ceasing to spin.
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