Rideshare mission on deck for penultimate Vega rocket as Vega-C successor stays sidelined – Spaceflight Now

Replace 10 p.m. EDT (0200 UTC): Launch scrubbed Friday at T-14 seconds. Awaiting an replace from Arianespace.

A pair of Earth remark satellites together with ten auxiliary payloads will launch aboard Arianespace’s penultimate Vega rocket into sun-synchronous orbit on Friday. The sunshine launch automobile, which started flying in 2012, is ready to liftoff from Europe’s Spaceport in French Guiana on Oct. 6 at 10:36 p.m. native time (9:36 p.m. EDT, 0136 UTC).

The principle payloads consist the Thailand Earth Remark System-2 (THEOS-2) for the Geo-Informatics and House Expertise Improvement Company (GISTDA) and the Triton spacecraft (often known as Formosat-7R) for the Taiwan House Company (TASA).

THEOS-2 is taken into account the first payload and is described as “a high-resolution Earth remark optical satellite tv for pc,” which makes use of 0.5-meter floor decision imagery to assist the operations of THEOS-1, which launched again in 2008.

The mission was accepted again in 2017 by the Thai authorities with a price ticket of about $238 million, based on the European House Company (ESA).

“The platform will host and exploit multi-source knowledge in an interoperable and built-in method,” stated Dr. Anond Snidvongs, the chief director of GISTDA, in a press release. “The ensuing insights will probably be key sources of data for Thai leaders and can assist them ship Actionable Intelligence Coverage (AIP): instruments for area-based administration and decision-making.”

The spacecraft weighs about 425 kg (approx. 937 lbs.) and is designed to orbit the Earth at 621 km and is designed to final for a decade. It may be tilted 45 levels for pictures.

The secondary payload, Triton, nicknamed the “Wind-Hunter Satellite tv for pc” by TASA, weighs about 250 kg (approx. 551 lbs.) and options an instrument referred to as the International Navigation Satellite tv for pc System-Reflectometry (GNSS-R). It collects GNSS knowledge from the ocean to determine wind fields and higher analysis issues like air-sea interactions and hurricane intensities.

https://twitter.com/TASA_Taiwan/status/1698711594992316590 

Additionally onboard the Vega rocket will probably be ten further payloads on behalf of six prospects:

• • Instituto Nacional de Técnica Aerospacial (INTA)
    • ANSWER (Superior Nanosatellite Methods for Earth remark Analysis) Chief
    • ANSWER Follower 1
    • ANSWER Follower 2
  • College of Tartu (Estonia)
  • Centre Nationwide D’études Spatiales (CNES)
    • N2SS (Nanosat 3U pour la Surveillance du Spectre)
  • SAB Launch Providers
    • PRETTY (Passive REflecTomeTry and dosimetrY) for Past Gravity Austria
    • Macsat IoD (in-orbit demonstration) for the Luxembourg House Company
  • ESA
    • PVCC (Proba-V Companion CubeSat)
  • European Union IOD/IOV program
    • CSC- (CubeSat Service) 1 & 2, an aggregation of seven payloads from 5 nations: Belgium, Czechia, Estonia, France and Spain

Transition to Vega-C

Friday’s launch would be the penultimate flight for the Vega rocket in its present iteration. A spokesperson with Arianespace confirmed to Spaceflight Now on Thursday that the ultimate Vega rocket is predicted to launch within the first quarter of 2024.

ESA and Arianespace had been within the midst of transitioning to the upgraded Vega-C rocket, however plans have stalled for now after the rocket was grounded due to an in-flight failure throughout the rocket’s second mission.

About 151 seconds into the VV22 mission on Dec. 20, 2022, there was “a progressive lower within the chamber strain” on the second stage of the rocket (Zeifro40). An Impartial Enquiry Fee (IEC) was shaped following the mishap, which resulted within the lack of a pair of Earth remark satellites from Airbus.

A job pressure established to implement the instructed enhancements by the fee decided that they’d intention for a return to flight mission by the tip of 2023.

One other huge setback got here on June 28, 2023 throughout a static hearth check of the modified Zefiro40 engine. Investigators decided that “the mix of the geometry of the Carbon-Carbon throat insert and the completely different thermo-mechanical properties of the brand new materials” led to a failure of the engine nozzle on the Salt di Quire check facility in Italy.

On Oct. 2, ESA introduced further suggestions from the IEC, together with:

• • A design change to the Zefiro40 nozzle technical opinions
  • Conduct two further check firings to confirm efficiency