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Anyone measured G-Forces???

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Old 03-08-2003, 11:38 PM
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cmsrp
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Default Anyone measured G-Forces???

Has anyone ever measured the G-forces from model aircraft?????
I was discussing it the other day with some fello modellers, and we are all interested to find out what sort of forces model aircraft deliver...
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Old 03-08-2003, 11:39 PM
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JohnVH
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Default Anyone measured G-Forces???

Do a search, jet guys can buy a unit to plug in and it tells speed and G's among other things.

I believe readings were around 15g's
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Old 03-09-2003, 12:34 AM
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Default Anyone measured G-Forces???

A Gmeter used here showed plus 4 and that was it. IMAA 120cc aerobat. There may be higher readings out there but not in our experience.
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Old 03-09-2003, 12:41 AM
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Default Anyone measured G-Forces???

Id believe it in a slow flyer, what about a 1/2 throttle wall? that should read some G's!
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Old 03-09-2003, 12:44 AM
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Default Anyone measured G-Forces???

A simple loop will pull 3-4 G's. I'm sure that blenders, wall, parachutes, etc, will produce much higher G-loads than that.
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Old 03-10-2003, 08:00 AM
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Default Anyone measured G-Forces???

I have seen as high as 17 g's on a 40 size sport plane in a full stick pull after a dive at about 120mph. Was a short impulse, but still significant. 3-6 g's are typical for flight.

Michael
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Old 03-10-2003, 01:30 PM
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Default Anyone measured G-Forces???

How about a contest to see who can pull the most "G"s? I would pay money to watch that one. Guess the plane would have to be very light, overpowed, large elevator travel, with a wing and tail reenforced with Kevlar.

Awards for most positive g's, most negative and most lateral for those knife edge loops. Hmm... I'll have to think of a catchy name for the contest.
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Old 03-10-2003, 06:01 PM
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Default Anyone measured G-Forces???

Would your "G" contest be G rated?
I don't know I am sure there are going to be more a lot words used than "oh GEE's" during a full speed yank out of a dive. Especially when the wings clap together at the bottom of the dive.



Later Jim
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Old 03-10-2003, 10:59 PM
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Default Anyone measured G-Forces???

And a low wing loading other wise you would just snap roll into the gro......... nevermind I guess that would work for a high G load to
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Old 03-10-2003, 11:27 PM
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Default Anyone measured G-Forces???

I'm sure pylon racers approach, if not exceed, 20 G's. Models of course.
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Old 03-11-2003, 04:39 AM
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Default Anyone measured G-Forces???

It's an easy contest to win, just repeat that 120mph dive and don't pull up. =>
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Old 03-11-2003, 01:42 PM
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Default Contest Rules

Pilot: Lynx
Subject: Violation of Contest Rule #74/a

The aforementioned pilot has been disqualified in accordance with Part A, Subsection 7, Rule #84/a in that he used the contest runway's blacktop to aid his "G" reading by crashing vertically into said blacktop.

The reading of 217 "G" s recorded by the meter, which was found 150 yards from the crash site embedded in a "Save the Owls" truck, is hereby rejected by the committee.

Signed,

George "G-String" Sullivan
Committee Chairman
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