Author Topic: HTV6 and Electrodynamic Tether experiment (Read 12179 times)

Fuji · « **on:** 09/05/2013 08:22 am »

JAXA announced Electrodynamic Tether (EDT) experiment will be utilized HTV6 mission in JFY 2015.
http://www.jaxa.jp/press/2013/09/20130904_htv_j.pdf

Sorry it's only Japanese material. So, I summarized here.

This EDT is technology demonstration for removing space debris.
Tether length 700m. Tether current is max 10mA. This payload is about 50kg.
After releaseing the ISS, about a week test will be held. After cutting the tether, de-orbiting maneuver will initiated.

robertross · « **Reply #1 on:** 09/05/2013 12:46 pm »

Neat! Looking forward to more info (english) some day!

Prober · « **Reply #2 on:** 09/05/2013 01:25 pm »

Quote from: robertross on 09/05/2013 12:46 pm

Neat! Looking forward to more info (english) some day!

Good test project

baldusi · « **Reply #3 on:** 09/05/2013 01:35 pm »

There are the sort of small simple experiments with breakthrough potential that have to be done.

Space Pete · « **Reply #4 on:** 09/05/2013 04:52 pm »

Sounds cool!

Robotbeat · « **Reply #5 on:** 09/05/2013 08:33 pm »

Very cool! Are you going to measure the efficiency of the tether experiment? I.e. if you wanted to use it to raise orbits, what's the efficiency of electric to kinetic and/or gravitational potential energy?

Fuji · « **Reply #6 on:** 09/06/2013 01:59 am »

Quote from: Robotbeat on 09/05/2013 08:33 pm

Very cool! Are you going to measure the efficiency of the tether experiment? I.e. if you wanted to use it to raise orbits, what's the efficiency of electric to kinetic and/or gravitational potential energy?

Measurement of the efficiency of the EDT thrust wold be track the end mass position by the rendezvous sensor.
I think orbit (altittude) change may be imperceptible.

Danderman · « **Reply #7 on:** 09/13/2013 05:43 pm »

Just to be clear, this mission is going to deploy the tether after the HTV departs from ISS, I hope.

NovaSilisko · « **Reply #8 on:** 09/19/2013 10:00 pm »

Quote from: Fuji on 09/05/2013 08:22 am

After cutting the tether, de-orbiting maneuver will initiated.

Deorbiting manuever of HTV-6, or a manuever by the detached tether? How quickly would the orbit of the tether decay? I would assume (or hope

) fairly quickly as it's a test for debris removal.

Fuji · « **Reply #9 on:** 09/20/2013 03:00 am »

Quote from: NovaSilisko on 09/19/2013 10:00 pm

Quote from: Fuji on 09/05/2013 08:22 am
After cutting the tether, de-orbiting maneuver will initiated.

Deorbiting manuever of HTV-6, or a manuever by the detached tether? How quickly would the orbit of the tether decay? I would assume (or hope ) fairly quickly as it's a test for debris removal.

Deorbiting manuever of HTV-6.
Tether and End mass is about 20kg, very light object. So, I think the tether will be quickly decay.