ARLA/CLUSTER: CubeSat Lightsail-2 a ser lançado a 22 de Junho vai ter uma baliza em 437,025 MHz

[João Costa > CT1FBF]

Lightsail-2 scheduled for launch June 22 - Beacon on 437.025 MHz

LightSail is a citizen-funded project from The Planetary Society.
This cubesat will be propelled solely by sunlight, to Earth orbit.
LightSail 2 is scheduled to launch aboard a SpaceX Falcon Heavy on June 22,
2019, and we will attempt the first, controlled solar sail flight in Earth
orbit.

*LightSail 2* will ride to space aboard the Department of Defense Space
Test Program-2 (STP-2) mission which will send 24 spacecraft to 3 different
orbits. LightSail 2 itself will be enclosed within Prox-1, a Georgia
Tech-designed spacecraft originally built to demonstrate close-encounter
operations with other spacecraft. Prox-1 will deploy LightSail 2 seven days
after launch.

After a few days of health and status checks, LightSail 2's four dual-sided
solar panels will swing open. Roughly a day later, four metallic booms will
unfurl four triangular Mylar sails from storage.
The sails, which have a combined area of 32 square meters [344 square
feet], will turn towards the sun for half of each orbit, giving the
spacecraft a tiny push no stronger than the weight of a paperclip.
For about a month after sail deployment, this continual thrust should raise
LightSail 2's orbit by a measurable amount.

LightSail 2 will fly in a 24-degree inclination, 720 km, circular orbit.
At latitudes of 42 degrees north it will reach a maximum elevation of 10
degrees above the horizon.

Lightsail-2 has been issued an experimental radio license *WM9XPA* and
transmit on 437.025 MHz. A morse beacon will transmit the callsign every 45
seconds. A packet beacon will transmit AX.25, FSK 9K6 bps data.

Beacon information is available at:
http://tinyurl.com/ANS-153-Lightsail-Morse-Beacon
Documentation of the downlink telemetry data structure is posted at:
http://tinyurl.com/ANS-153-Lightsail-Telemetry

Thanks to The Planetary Society and ANS for the above information
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