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Outline of Japanese Experiment Equipment


Japan provides the experiment equipment as shown below to the Neurolab Program.


Overview of Japan
Experiment Equipment

Experiment equipment, Vestibular Function Experiment Unit (VFEU) and Neural Data Acquisition System (NDAS), are provided by NASDA for Neurolab and developed based on the VFEU which was flown in Spacelab-J (SL-J) and the Aquatic Animal Experiment Unit (AAEU) which was further improved in the life support capability assessed in International Microgravity Laboratory-2 (IML-2).
The functions of VFEU and NDAS are to maintain long-term animal life support, record experiment data of neural activities and acceleration continuously over the mission duration as well as downlink to the ground.

(1) VFEU
The VFEU is used for the microgravity experiment of sea animal. The function of VFEU is to maintain long-term animal life support and support the neural experiment.

(Major Specification)
(a) Water Tank : Fish Pakage Volume approximately 4l/unit
(b) Life Support
Life Support Duration : More than 26days
Water Control : Crushed Coral, Activated Carbon, Glass Beads with Nitrifying Bacteria
Temp. Control : 10 - 25 (14}1 for the experiment)
Oxygen Supply : Gas exchange by Artificial Lung which consists of hollow fibers
(c) Equipment size : 483WX606DX444H (mm),
/weight : approximately 77kg
Vestibuler Function
Experiment Unit


(2) NDAS
The functions of NDAS are to measure, transmit, process and record the experiment data of neural activities and acceleration continuously over the mission duration as well as downlink to the ground.
The power supply to transmitter is without wire. This equipment is to measure the experiment data without animal restraint. The main components of NDAS are as follows.
(a) Data Interface Unit (DIU)
Function : Data Processing
Size/Weight : 483WX321DX266H (mm), approximately 17kg
Data Interface Unit
(b) Data Recorder (DR)
Function : Data Recording
Size/Weight : 483WX321DX266H (mm), approximately 19kg
Data Recoder
(c) Receiver (Rx)
Function : Data Receiving
Size/Weight : 40X9L (mm), approximately 9g
(d) Transmitter (Tx)
Function : Data Transmission
Size/Weight : 29WX51DX18H (mm), approximately 47g
Transmitter
(e) Inductive Coil
Function : Power Supply to Tx
Size/Weight : 120X250L (mm), approximately 291g


Last Updated : April 8, 1998

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