Basket

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nlees
Posts: 33
Joined: Sun Mar 15, 2015 5:43 pm

Basket

Post by nlees » Thu Jan 17, 2019 11:19 am

Question:
Can a team member pull the basket to the pool side or must the ROV bring the basket back? For scout, navigator and Ranger teams.

tarpon_tides
Posts: 4
Joined: Mon Dec 24, 2018 7:19 am

Re: Basket

Post by tarpon_tides » Mon Jan 28, 2019 11:51 am

I think I found the answer to this question if it still holds true for this competition

viewtopic.php?f=23&t=528&p=1395&hilit=basket#p1395

Matthew Gardner
Posts: 968
Joined: Sat Jan 05, 2013 11:19 pm

Re: Basket

Post by Matthew Gardner » Mon Jan 28, 2019 12:25 pm

All teams from all classes may use a collection basket to gather multiple items.

EXPLORER and RANGER companies CANNOT pull the lift basket up by hand / manually.
NAVIGATOR and SCOUT companies CAN pull the lift basket up by hand / manually.

For EXPLORER and RANGER: You can use a lift bag (incorporated into the ROV or collection basket), the ROV can collect it, or other device can be used to lift the collection basket, but it cannot be pulled by hand (no one on the surface can use their muscles to pull up the collection basket).


Note: Since the previous ruling in 2017, we have had two years of mission tasks that include lifting a heavy object. For these tasks, lifting by hand was not allowed. So now, collection baskets must be lifted by other means (for RANGER and EXPLORER).

Good luck.

Matthew Gardner
MATE Center

Ella5980
Posts: 5
Joined: Thu May 31, 2018 8:49 am

Re: Basket

Post by Ella5980 » Mon Mar 11, 2019 2:54 pm

I am inquiring about additional collection basket rules. I understand that Ranger teams cannot pull up the basket by hand as specified in this posts:

I still have additional questions.

Can a team lower the basket into the water by hand (connected by a rope for example) in a controlled way? This would be beneficial to a team as they could send props to the pool bottom in a favorable position for ROV recovery. An example would be lowering a cup containing fry or grout to bottom of the pool so the ROV could then grab it and transport it to its zone.

Lastly will the lift basket be included in the size and weight measurement of the main ROV?

Matthew Gardner
Posts: 968
Joined: Sat Jan 05, 2013 11:19 pm

Re: Basket

Post by Matthew Gardner » Wed Mar 13, 2019 12:26 pm

RANGER and EXPLORER teams would also be required to carry the lift basket down with their vehicle.

NAVIGATOR and SCOUT teams could lower a collection basket by hand (but only right at the side of the pool).

Any collection basket would need to be included in the size and weight measurements.

Good luck.

Matthew Gardner
MATE ROV Competition

Ella5980
Posts: 5
Joined: Thu May 31, 2018 8:49 am

Re: Basket

Post by Ella5980 » Mon May 13, 2019 9:49 pm

This question regards incorporating a lift bag into the basket design. We learned that these baskets in the real world are called landers and are used to transport payloads to and from the surface to aid ROV work.

Here is a link to an example of a lander: https://schmidtocean.org/11000-meters-u ... -part-one/

Can a Lift Bag be incorporated into the basket (lander) design? Meaning that the lift bag is hard attached to the frame of the basket. Variable buoyancy systems are commonly incorporated into landers in the real world so we see no problem in using this in the competition.

Can the air hose that delivers air to the lift bag be routed directly into the lift bag attached to the basket? This system would be completely independent of the ROV such as the real world ones used by professional ROV operators. One end of the hose would be integrated into the lift basket and the other to the surface and a bicycle pump.

I believe this would not be considered as manually bringing the basket to the surface as a company member only pumps that air into the lift basket and does not pull it up to the surface in any way. It would be up to the ROV to "recover" the lander (basket) and push it back to the side of the pool.

We had a lot of fun researching landers and would like to incorporate it into our design. We just want to make sure everything we are attempting is legal in the competition rules.

For the record our lift bag meets all safety requirements such as having holes for excess air to be pushed out of.

Thank you for your time.
Sincerely,
Ella

Matthew Gardner
Posts: 968
Joined: Sat Jan 05, 2013 11:19 pm

Re: Basket

Post by Matthew Gardner » Mon May 20, 2019 12:10 pm

Yes. You may incorporate a lift bag into your collection basket. You could have a team member use a manual pump to fill the lift bag with air. Your ROV would have to get it back to the edge of the pool - you could not pull a rope/line by hand.

Note that the lift bag would need to be included in size and weight measurements, as would the collection basket.

Good luck.

Matthew Gardner
MATE ROV Competition.

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