Isar Aerospace Spectrum

Spectrum is a two-stage orbital launch vehicle being developed by Isar Aerospace.[1] As of March 2023 Isar Aerospace is planning to launch the first Spectrum rocket in the second half of 2023 from the Andøya Spaceport.[2] Using the Spectrum rocket, Isar Aerospace is attempting to be the first European company to commercially launch a Small-lift launch vehicle to orbit.

Spectrum
FunctionOrbital launch vehicle
ManufacturerIsar Aerospace
Country of originGermany
Size
Height28 m (92 ft)
Diameter2 m (6 ft 7 in)
Stages2
Capacity
Payload to LEO
Mass1,000 kg (2,200 lb)
Payload to SSO
Mass700 kg (1,500 lb)
Launch history
StatusIn Development
Launch sites
First flightH2 2023
First stage
Powered by9 x Aquila
PropellantPropane/LOX
Second stage
Powered by1 x Aquila
PropellantPropane/LOX

Design

The first stage uses nine in-house developed and manufactured Aquila engines, while the second stage uses one Aquila engine.[1] The Aquila engine uses liquid oxygen and propane. In March 2023 Isar Aerospace reported having run 124 hotfires of the Aquila engine in the prior year, with testing taking place in Esrange, Sweden.[3]

Launch sites

Map of orbital launch sites at the Guiana Space Center, with Spectrum launches being planned to take place at the former Diamant launch site.

A 20-year deal was signed by Isar Aerospace in April 2021 for exclusive access to one of the Andøya Space launch pads in Norway. Due to its location inclinations between 87.4 and 108 degrees can be reached from this launch site, targeting sun-synchronous and polar orbits.[4]

In July 2022 Isar Aerospace announced that it had been selected by CNES to conduct launch operations at the former Kourou Diamant Launch Site at the Guiana Space Centre, last used for an orbital launch in 1975.The first launch is scheduled to take place from this launch site in 2024. Due to the low latitude of this launch site, it can be used for equatorial and medium inclined orbits.[5]

Launches

In 2021 deals for launches on Spectrum were announced with Airbus Defence and Space,[6] EnduroSat[7] and Astrocast.[8] A deal with Spaceflight, Inc. for a dedicated launch from Andøya in 2026 and option for a 2025 launch were announced in January 2023.[9] As of March 2023, Isar Aerospace is targeting the second half of 2023 for Spectrums debut launch from Andøya.[2]

References

  1. "Spectrum". Isar Aerospace. Retrieved 5 April 2023.
  2. Berger, Eric (28 March 2023). "A front-runner emerges in the European small launcher race". Ars Technica. Retrieved 5 April 2023.
  3. "Isar Aerospace unveils progress on Aquila engine development". Isar Aerospace. Retrieved 5 April 2023.
  4. "Launch site secured: Isar Aerospace signs exclusive launch pad in Norway for up to 20 years". Isar Aerospace. Retrieved 5 April 2023.
  5. "Isar Aerospace selected to be first privately-funded launch services company flying satellites from Guiana Space Centre". Isar Aerospace. Retrieved 5 April 2023.
  6. Holmes, Mark (22 April 2021). "Isar Aerospace Signs Launch Deal with Airbus Defence and Space". ViaSatellite. Retrieved 5 April 2023.
  7. Jewett, Rachel (25 October 2021). "EnduroSat Signs Launch Contract With German Isar Aerospace". ViaSatellite. Retrieved 5 April 2023.
  8. Holmes, Mark (15 December 2021). "Astrocast Taps Isar Aerospace for Upcoming Launch". ViaSatellite. Retrieved 5 April 2023.
  9. Jewett, Rachel (26 January 2023). "Isar Aerospace Signs Rideshare Deal with Spaceflight, Works Toward First Flight". ViaSatellite. Retrieved 5 April 2023.
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