Author Topic: ZERO-G parabolic maneuvers Amerijet 213  (Read 11400 times)

Offline Squawk 7700

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ZERO-G parabolic maneuvers Amerijet 213
« 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

Ken


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KHWD Ground/Tower
KOAK Del/Gnd/Twr
KSFO NORCAL App Rwy 28L/R
KSFO Tower/Ground
NORCAL Approach (KOAK)
NORCAL Departure (KSFO/KOAK)
KSJC NORCAL Apr#2
ZOA Oakland Center (35/40/41)
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RJTT Twr/TCA + Ground

757-rules

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Re: ZERO-G parabolic maneuvers Amerijet 213
« 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 »

Offline joeyb747

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Re: ZERO-G parabolic maneuvers Amerijet 213
« Reply #2 on: March 05, 2013, 03:50:45 PM »
Affectionately knowen as "Vomit Comets"...  :-o

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:  
 
« Last Edit: March 05, 2013, 03:52:41 PM by joeyb747 »
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Offline Hollis

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Re: ZERO-G parabolic maneuvers Amerijet 213
« 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.