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Author Topic: ZERO-G parabolic maneuvers Amerijet 213  (Read 10981 times)
Squawk 7700
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Posts: 507

« on: March 04, 2013, 10:03:09 PM »

I recorded this back in 2009. Amerijet 213 working Oakland Center on 134.15 setting up the Zero-G parabolas off-shore San Francisco, CA

More info on the Zero-G experience here: https://www.gozerog.com/index.cfm


* ZOA-SFO-Jul-11-2009-1900Z_ZeroG_AmeriJet213.mp3 (1880.65 KB - downloaded 2460 times.)

KHWD Ground/Tower
KOAK Del/Gnd/Twr
KSFO Tower/Ground
NORCAL Approach (KOAK)
ZOA Oakland Center (35/40/41)
RJTT App/Dep
RJTT Tokyo Control
RJTT Twr/TCA + Ground
« Reply #1 on: March 05, 2013, 03:26:57 PM »

For those who don't know what this is.....

« Last Edit: March 05, 2013, 03:28:46 PM by 757-rules » Logged
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Nothing Like A 747!

« Reply #2 on: March 05, 2013, 03:50:45 PM »

Affectionately knowen as "Vomit Comets"...  shocked

The aircraft Amerijet uses for this operation is Boeing 727-227/Adv(F) N794AJ (cn 21243/1197), pictured below.
The aircraft Novespace uses for this operation is Airbus A300B2-103 F-BUAD (cn 003) also below.
Below them, is a picture of the "cabin" on F-BUAD, soft mats line the floor, walls, and ceiling in the aft area, while upfront, seats for take-off and landing portions resemble stock airline issue seats, cabin slightly modified... wink  

* zerog1.jpg (210.64 KB, 1100x745 - viewed 206 times.)

* zerog3.jpg (329.54 KB, 1024x695 - viewed 188 times.)

* zerog2.jpg (533.41 KB, 1280x863 - viewed 225 times.)

* zerog4.jpg (506.07 KB, 1280x865 - viewed 237 times.)
« Last Edit: March 05, 2013, 03:52:41 PM by joeyb747 » Logged

Aircraft Mechanic
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Posts: 403

« Reply #3 on: March 05, 2013, 07:17:14 PM »

During flight tests, that maneuver is known as a symetrical pushover. Main reason is to check compliance with FAR regarding pitch stability and control, as well as structural integrity.
On a personal note, did that once while inputing a maximum nose down hardover from the autopilot at the zero-G point. Not recommended! Quite the negative G-load! Nothing bent or broke, but a quick way to lose your breakfast, as most of the aircrew did, including myself.
The opposite maneuver was the symetrical pull-up. Always a good positive G-load there during the pull-up.   
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