Engineering

Solar Impulse 2, World Goes Down – Engineers Pay for Solar Aircraft New Battery System

In Hawaii engineers have brought the Solar Impulse 2 out of hibernation. You now insert a new battery system on the solar plane. In April the interrupted circumnavigation to go then who had to break off the team because of overheated batteries.

It is so far: the engineers of team Solar Impulse prepare before the solar plane to continue his circumnavigation. In a hangar at Kalaeloa airport, Hawaii incorporating currently new batteries and a new fan and cooling system in the Swiss plane, which is supposed to protect against overheating damage on future stages.

Overheat led to the cancellation of around the world

The overheating of the lithium-polymer battery was last 8300 km-long stage, which ran from Japan to Hawaii over the Pacific. “While the aircraft is in Nagoya was on the runway, harsh conditions prevailed. That’s why we decided to a test flight before we took off in the direction of Hawaii”, explains the team on his blog. “The design of the battery system the possibility of a test flight was drafted in followed by a mission flight without time interval for cooling off the batteries not taken into consideration.”

The team had to send in the hibernation the solar plane to Hawaii, covered with aluminum foil and sealed with glue to protect the sensitive components from further damage. “We decided to cancel the round the world and to consider how we flott would get back the aircraft with some distance.”

In April, solar launches impulse 2 to the rest of the world tour

Parallel to the maintenance also pilots and communications team prepare for the continuation of the circumnavigation. “A part of the communications team has landed with the engineers in Hawaii, the others followed in the next few weeks or prepared for use in the Mission Control Center in Monaco,” it says in the blog.

But the pilots also on some must renounce, for example air conditioning in the cockpit. During the day it can get hot that’s why up to 40 ° C, at night, however, up to minus 20 ° C. There is a pressure compensation also, so that pilots regularly reaching their physical limits.