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      Reference Projects

      i-Planes

      APUS strives to become the leader in sustainable, ecologically friendly propulsion system integration and thus empower the future of aviation. This mission is embodied by the APUS i-planes: APUS i-2 and APUS i-6. These two aircraft programs combine APUS’s unique and comprehensive experience in airframe design and certification with paradigm-shifting hybrid-electric propulsion systems. The APUS i-2 is the first fully hydrogen-powered 4-seat travel aeroplane and utilises the novel APUS TubeStruct™ technology. The larger APUS i-6 acts as a technology demonstrator for hybrid-electric power train systems.

      APUS i-2
      Emission-free aviation for all.

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      APUS i-6
      Pioneering aircraft propulsion technologies.

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      OPV AvioniC Panel

      The project consisted of the development and production of a cockpit panel for an optionally piloted vehicle (OPV). The panel contains both the instrumentation required for VFR-night operations and an additional computer for monitoring and testing of the flight control system developed for autonomous flight. The customer originally supplied us with a specification sheet and a basic circuit diagram as the description documents of the required functionality. Based on these, we developed a cockpit panel, verified it as per CS-23 standards, built and delivered a prototype. The project scope also included supplying a complete set of sample documents. The distinctive feature of this OPV panel is its plug-and-play functionality. By releasing only a few screw joints and plugs the entire panel can be easily removed from the aircraft in its entirety and thus prepared for autonomous flight.

      Main project objectives
      • Design, build, manufacturing and installation of the mechanical components
      • Design, build, manufacturing and installation of the panel covers (fibre-reinforced polymer)
      • Selection, procurement and integration of electrical equipment and instrumentation
      • Laying out and fitting of various circuit boards (printed circuit boards) including the housing design
      • Developing, documenting and production of the entire cable harness (software: VeSys Design)
      • Structural integrity verification using finite-element analysis (Nastran) und accompanying structural tests

      Cowling & Engine Frame Extra 330LE

      The new battery system integration for the EA330 LE was performed by APUS DO EASA.21J.638. The project covered overall dimensioning, structure design as well as prototype production and compliance verification to support the definition of new flight conditions.

      System Integration Key Facts
      • Engine frame mass reduction to 60%
      • Cockpit battery installation mass reduction of 30%
      • Battery support structure designed for fast exchangeability
      • Air conditioning adapters for efficient charging
      Cowling & Cooling System Key Facts
      • Optimised geometry for maximum propeller efficiency and minimum drag
      • Mass reduction by using CFK sandwich
      • Cooling duct area reduced by 55%
      • Easy access to battery air conditioning adapter and charging connector

      GenSet SP170G

      In a joint project, an efficient diesel generator was developed with the focus on aerial applications.

      Key Facts

       

      • Combination of a 114 kW diesel engine and a Siemens SP170G brushless generator (170 kW)
      • 102 kW continuous electrical power, consumption of approx. 220g/kWh (jet fuel)
      • Only 4% extra weight for mechanical connection
      • Goal: NextGen Inverter as a “single external interface” (DC power out, power demand input, status data output)
      APUS contribution
      • Project management
      • Development of the mechanical interface with the following features:
        • Development towards certification as per CS-23
        • Minimum system weight
        • Reduced level of vibration
        • No modification of the baseline components (using off-the-shelf components)
        • Simplified assembly
      • Prototyping, component procurement, monitoring