ATLAS 2: launch of a balloon-probe with an ascent velocity that might vary

ATLAS 2 is a very particular mission: it's a flight where the velocity of the balloon-proble might vary during it's vojage.

The probe will be provided with a modulation system where in the initial fase of the flight, the module will travel  with a high velocity, in the troposphere layer (by a forced inflation proccess of the balloon) and in the final phase the module will travel with a slower velocity (in the lower layer of the Stratosphere). The module is going to slow down with it's velocity by releasing part of the Helium contained inside the balloon with an attained altitude between 15 and 20 km's.

ATLAS2 Esploso

This solution allows to:

  1. Increase the ascent velocity of the balloon-probe in the class E airpsace (0-12km) to decrease the time and to avoid impact.
  2.  limitate the air currents on the horizontal component regarding the ascent motion to decrease the operative ray of the mission.
  3. curtail the ascent motion in the atmospheric layer of a mayor sperimental interest (>12km) to maximalize the expose time of the sensors installed on board of the module, in atmospherical conditions.

With this configuration of the module it's not necessary to ask further authorizations for this mission.

For this reason the documentation was sent to the National Agency for Civil Aviation (ENAC) to evaluate the protocol to avoid any doubts.

Link regarding the protocol

According to Ten. Col. Colatoni at ENAC replied to our protocol by telling us that it re-enteres inside the free flight protocol.

This means that our project can proceed as expected.

We are grateful to thank Ten. Col. Colatoni for his cooperation.

 

Antenna and tracking

With all the goals that we have to reach for mission ATLAS 2, theres is one of them where we have to install a transceiver (with a low power) contained inside the payload so we can receive data from the sensors in real time during flight.

We recently discovered a frequency that could be used for this mission (without the authorization).

We are currently working on a project which is a mechanical system that will move the antenna in order to track the module during flight to obtain the best radio frequency (from the crew StratoLab in Belluno)

How are we going to bring all of our experiments in the Stratosphere?

We wrote it in many ways, but an image is probably much better than a thousand words.... but if this is not  enough, do not hesitate to ask our crew for questions. 

StratoLab il lancio En

Information pursuant to art. 13 D.LGS. 30 June 2003 n.196

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