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LEA-X5:  New Movie on the completion of the European 5m X-band LDRS

Juli 2021

Gladly we announce with a new 20-minutes-movie the completion of the H2020-development „LEA-X5“, the 5m class European Large Deployable Reflector Subsystem (LDRS) operating in X-band.

The film itself is of course showing recent environmental and deployment tests, but it is mainly about PEOPLE, who are space engineers and space enthusiasts, and what they can achieve with combined powers and brains. These people, together with the enablers European Commission and European Space Agency, are making the achievement of „European Non-dependance“ happen.


LEA-X5 is a full LDRS-Subsystem (lead by HPS, Germany) and comprises the

  • 5m diameter X-band reflector assembly (lead by LSS, Germany)
  • the 5m long deployable arm assembly (lead by HPS, Germany),
  • hinges & HDRMs (RUAG, DE),
  • deployment electronics (vH&S, DE),
  • thermal hardware (HPS/FHP).

Further partners of the H2020-consortium have been: INVENT (DE), FHP (PT), INEGI (PT), TICRA (DK), LUMA (SW), HPTEX (DE), ARQUIMEA(SP), HPS (RO), ETAMAX (DE), WSS (DE), ONERA (FR), TAS (FR), OHB (DE), Airbus (DE).

Most of the consortium members are introduced in the movie, inluding many interviews.


Take your time and enjoy the spirit of doing big things: LEA-X5 – European 5m X-band LDRS Completed (Final Report 06/2021) – YouTube


Best regards,

Your WeLEA-Consortium

HPS announcing crucial milestone set for Europe´s own large deployable reflector subsystem (LDRS)

April 2019

Large deployable antenna reflectors are among the critical space technologies most urgently needed in Europe in order to drastically reduce the continent´s dependence on goodwill, knowhow, and supplies from the United States. Therefore, back in fall 2017 the EC decided to co-fund in the fame of its Horizon 2020-programm the 7 million € development-project LEA (Large European Antenna) of a consortium with 15 partners out of six European (D, SP, PT, SE, DK, FR) countries under the implementation leadership of HPS, Germany, among them also LSS GmbH (Germany) and RUAG Space Germany. A special cooperation between HPS and Northern Bavarian entities has already led to the development of the central component, the „European Space Mesh“; it will in future be produced in Bavaria. Now the project has taken its crucial milestone when it passed the Critical Design Review (CDR) in April 11-12, 2019, and is heading towards the final stage of its test campaign from February through August 2020. In exchange for the opportunity to gain flight heritage HPS offers the first product, LEA, for free to any customer worldwide.

Major specs of LEA are: deployable reflector aperture at 5.1 meters with a 5.6 meter long deployable arm; a mass of just 100 kilo including reflector, arm, hold-down-and-release-mechanism, harness, thermal hardware, operating frequency: X-band. The stowed volume is as small as 2.6 x 1.2 x 0.6 meters.
This development is not only important in general, but serves also as a baseline for two potentially next Copernicus missions at the horizon with 8 and 12 meter reflector subsystems. The whole development program of LEA is based on precursors undertaken within the framework of ESA technology programs.

For more information on LEA please klick:

Large European Antenna – LEA

Oktober 2019

A European Declaration of Non-dependence in Space

Dear Friends and Fans of Europe in Space,

in the name of all members of our pan-European WeLEA-consortium we proudly present a video, documenting the successful road of the development of one of the most needed critical technologies in space: the Deployable Large European Antenna (LEA).

Invented, designed, tested and manufactured by more than 15 well known space companies from 7 European countries with a total staff of more than 500 dedicated specialists, representing a truly unique team of SMEs and Midcaps, the LEA-product is now taking shape as nothing less than “A European Declaration of Non-dependence in Space”.

Thanks to the farsighted vision of both powerful institutions responsible for our continent´s future in space, the European Space Agency ESA and the European Commission EC, LEA will become an invaluable technological asset to blaze our own trail towards knowledge and understanding as indispensable prerequisites to making this world a sustainable, better place – for life in diversity, for all citizens on the globe, and for one Europe across all its internal borders.

Within the WeLEA consortium HPS Germany, as prime contractor, is responsible for the project- and technical management of the whole LEA-subsystem, the deployable arm assembly and the reflective metal mesh.

Watch the video

Watch the video


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Test des LEA-Arms ein voller Erfolg

März 2021

Europas innovative entfaltbare Antennentechnologie nimmt die nächste Hürde

Mit dem soeben bei INEGI erfolgreich abgeschlossenen Test des Deployable Assembly Arm (DAA), der die Deployable Reflector Assembly (DRA) mit dem Satelliten verbindet, hat das europäische LEA-Konsortium unter der Leitung von HPS die nächste Hürde bei der technischen Realisierung von Europas neuer Antennentechnologie genommen.

Der 5 Meter lange DAA besteht aus drei Gelenkmechanismen und zwei HDRMs (beide von RUAG Space Deutschland), Auslösemechanismen (von Arquimea, Spanien), drei CFK-Rohrsegmenten (von INVENT, Deutschland), Metallbeschlägen (teilweise von HPS Rumänien) und einer Deployment Control Electronics & EGSE (von Hoerner & Sulger). Fokus der Tests war einerseits die Verifikation eines gesamten Entfaltzyklus (dauert ganze 25 min.), andererseits die Verifikation der hoher Ausrichtgenauigkeit nach der Entwfaltung, sowie die Validierung der im Vorfeld erstellten thermo-elastischen mathematischen Modelle.

INEGI (Portugal) ist der Hauptpartner für den Arm-Entfaltungstest und ein guter Partner von HPS seit nunmehr über 13 Jahren. INEGI war verantwortlich für den 0-g-Simulationsprüfstand und den thermo-elastischen Verformungsprüfstand. Trotz der Pandemie und aller Einschränkungen konnten die Teams diesen Fortschritt mit höchster Motivation und engstem Kontakt zwischen INEGI/HPS-team vor Ort in Porto und den HPS-Ingenieuren in Deutschland bewältigen. HPS ist verantwortlich für die DAA und auch für das Umsetzungsmanagement der gesamten LEA-Aktivität. Das gesamte LEA-Team umfasst 15 Partner aus 7 Ländern; das Programm startete im Rahmen von H2020 im November 2017. Der Arm-Entfaltungstest und der TED-Test (thermoelastische Verformung) war einer der letzten Tests dieser H2020-Aktivität.

Der nächste Schritt – der noch im März beginnt – ist der Umwelttest (Vibration und thermisches Vakuum) des kompletten LDR-Subsystems (Reflektor, Arm und HDRM, alles miteinander verschraubt), der bei INTA in Madrid, Spanien, durchgeführt wird.

„LEA-X5“ (5m Reflektordurchmesser, 5m Armlänge, X-Band-Anwendung für Erdbeobachtung und Telekommunikation) wird inzwischen als eine der vorbereitenden Technologieentwicklungen für die aktuelle Copernicus CIMR-Mission gesehen.

Europäische Premiere

März 2021

Arm and Reflector of LEA-X5 Successfully Mated to Form Complete Subsystem

Fifteen companies – mostly SMEs – from seven countries and one goal: a deployable 5-meter X-band-antenna as a preliminary development for the CIMR project, developed under the European H2020 program (2017-2021). For the first time ever, such a complete subsystem (HPS) has now been successfully assembled in Europe from the reflector- (LSS) and arm- (HPS) assemblies. Previously, the test deployment of the arm and reflector – each individually – had already been successfully passed.

LEA-X5-Subsystem is now at the premises of the consortium´s highly reliable test partner INTA in Spain, where vibration tests for the subsystem are on the agenda in the presence of the LSS- and HPS-teams. In a third round of testing, the subsystem will have to prove itself capable of withstanding the conditions of the thermal chamber.

The next complete subsystem-hardware in this context – the CIMR LDRS-EQM – will be assembled end 2023.

With the key technology behind LEA-X5, the continent is decisively expanding its independence from non-European sources.