Alten Solidaire

Alten Solidaire

Alten Solidaire is positioned in the Bee ecosystem as an engineering support contributor serving a project with a humanitarian purpose. Coming from the ALTEN group, Alten Solidaire is linked to a skills-based sponsorship approach, where engineering knowledge, technical method and human commitment can support projects of general interest.

In the context of the Bee ecosystem, this role becomes especially meaningful through the link between Alten Solidaire, RED VTOL ONG and the Mini-Bee Hybrid project. The objective is not only to explore an innovative aircraft architecture, but also to support a possible operational use case: vertical flight technologies serving emergency response, medical support and humanitarian missions.

• ALTEN Solidaire – ALTEN France

Alten Solidaire and RED VTOL ONG

RED VTOL ONG represents the humanitarian application side of the VTOL vision. Its purpose is to promote and explore vertical take-off and landing technologies that could be useful for rescue operations, emergency access, medical evacuation, light logistics and intervention in degraded environments.

In this framework, Alten Solidaire can be understood as an engineering support actor. Its contribution is not presented as the ownership of an aircraft programme, but as a technical and methodological support helping a humanitarian-oriented project become more structured, credible and readable.

The connection between Alten Solidaire and RED VTOL ONG gives a practical meaning to the Mini-Bee Hybrid project. The aircraft is not only considered as a technology demonstrator. It is also studied as a possible tool for missions where rapid access, reduced infrastructure and operational flexibility are essential.

This creates a clear positioning: engineering serving humanitarian mobility.

Humanitarian use of VTOL technologies

Vertical take-off and landing aircraft are relevant for humanitarian missions because they can operate with limited ground infrastructure. Unlike conventional aircraft, they do not necessarily require a runway. Compared with traditional helicopters, new VTOL concepts may explore different compromises between cost, noise, energy source, maintenance, modularity and operational accessibility.

For humanitarian use, the main value is not technological novelty by itself. The value comes from the mission: reaching isolated areas, supporting emergency teams, transporting light medical equipment, evacuating a patient, or connecting a temporary base with a damaged or remote location.

Typical humanitarian VTOL use cases include:

• Emergency medical access in isolated or poorly connected territories.
• Light medical evacuation when ground transport is too slow or impossible.
• Rapid response after natural disasters when roads, bridges or airports are unavailable.
• Transport of small critical payloads such as medicine, blood bags, diagnostic equipment or communication devices.
• Support to field teams operating in remote, mountainous, flooded or degraded environments.
• Reconnaissance and coordination before sending heavier rescue assets.

Current aircraft families used for emergency missions

Before considering innovative VTOL architectures, it is useful to understand the aircraft families already used today for emergency, rescue and humanitarian missions.

Aircraft family	Typical strengths	Operational limits
Twin-engine helicopters	High safety margin, strong operational capability, medical evacuation compatibility, professional emergency use.	High acquisition cost, high operating cost, demanding maintenance, need for trained crews and support infrastructure.
Single-turbine helicopters	Good balance between performance and cost, widely used for utility missions, rescue support and regional operations.	Still expensive to operate, noisy, fuel-dependent and maintenance-intensive.
Light helicopters	More accessible, useful for observation, light transport and short-range missions.	Limited payload, limited medical configuration, weather sensitivity and reduced redundancy.

These aircraft remain essential today. However, they also show why new VTOL concepts are being explored: lower infrastructure needs, potentially lower operating cost, modular deployment and better adaptation to targeted missions.

Innovative VTOL project landscape

The VTOL innovation landscape is broad. It includes electric air taxis, autonomous passenger aircraft, personal VTOL machines, multicopter platforms and hybrid-electric concepts. For a humanitarian project such as RED VTOL ONG, these examples are useful as references, but they must be evaluated with caution. Certification, payload, endurance, safety, maintainability and cost remain decisive.

Joby Aviation
All-electric piloted eVTOL concept focused on air taxi operations. It is one of the most visible advanced air mobility projects and is often used as a reference for electric VTOL development.

EHang EH216-S
Autonomous passenger-carrying eVTOL platform. It is an important reference because of its certification progress in China for pilotless passenger operations.

Volocopter
Electric multicopter VTOL concept historically focused on urban air mobility. It remains a useful technical reference, although its industrial and financial situation requires caution.

Lilium
Former electric jet-based eVTOL project. It should now be treated mainly as a historical reference showing both the ambition and the financial difficulty of the eVTOL sector.

Zapata AirScooter
Personal hybrid-electric VTOL machine. It illustrates a different approach, closer to individual vertical mobility than to collective air transport.

Mini-Bee Hybrid
Hybrid VTOL concept developed in the Bee ecosystem, with a humanitarian orientation through RED VTOL ONG and a focus on useful missions, emergency access and modular deployment.

Electric, hybrid and piston-based VTOL approaches

Different VTOL architectures answer different operational needs.

All-electric VTOL aircraft are attractive because of their low local emissions, reduced acoustic signature and simplified propulsion architecture. However, endurance, charging infrastructure, payload and battery mass remain important constraints, especially for humanitarian missions far from prepared bases.

Hybrid-electric VTOL aircraft combine electric propulsion with an onboard energy source, often a combustion engine used as a generator. This approach can improve range, endurance and operational flexibility. For humanitarian use, hybridization may be relevant when missions require longer distances, uncertain infrastructure or rapid redeployment.

Piston-engine and turbine-based systems remain important because they are already proven in aviation. Engines such as Rotax aircraft engines are widely used in light aviation and can support hybrid architectures where a combustion engine feeds an electric propulsion system.

Mini-Bee Hybrid as a humanitarian VTOL concept

Within the Bee ecosystem, Mini-Bee Hybrid is positioned as a light hybrid VTOL concept designed around useful missions rather than luxury mobility. Its purpose is connected to emergency response, medical support, humanitarian logistics and rapid intervention.

The project explores an aircraft architecture that could support:

• vertical take-off and landing without a conventional runway;
• modular deployment in difficult environments;
• light medical or emergency missions;
• operation in areas with reduced infrastructure;
• a balance between electric propulsion benefits and hybrid endurance;
• a possible link with humanitarian field operations through RED VTOL ONG.

This is where the support of Alten Solidaire becomes valuable. The challenge is not only to imagine an aircraft, but to structure a credible engineering approach around the mission.

Role of Alten Solidaire in the project

Alten Solidaire can contribute by bringing engineering culture, technical discipline and project structuring to a humanitarian-oriented innovation effort.

Its role may include:

• helping clarify operational needs;
• supporting the definition of technical requirements;
• contributing to architecture studies;
• improving the readability of engineering choices;
• supporting the link between mission needs and aircraft design;
• helping transform a concept into a more structured development path;
• bringing method, technical review and engineering perspective.

In this position, Alten Solidaire supports RED VTOL ONG by helping the humanitarian application become technically clearer. The objective is to make the project easier to understand, easier to discuss with partners and more coherent from an engineering perspective.

A shared ambition: engineering for humanitarian action

The link between Alten Solidaire, RED VTOL ONG and Mini-Bee Hybrid gives the project a strong identity. It combines three complementary dimensions:

Engineering method
A structured approach to requirements, architecture, feasibility and technical credibility.

Humanitarian purpose
A focus on emergency access, medical support, rescue missions and operations in difficult environments.

VTOL innovation
A search for new aerial mobility solutions that can operate with reduced ground infrastructure.

Alten Solidaire therefore appears as an engineering support actor serving a wider humanitarian ambition. Through its connection with RED VTOL ONG, it helps position Mini-Bee Hybrid not only as an aeronautical innovation, but as a possible tool for useful missions.

Summary

Alten Solidaire is part of the Bee ecosystem as a technical and human support contributor. Its position is especially relevant in relation to RED VTOL ONG, because the project aims to connect VTOL innovation with humanitarian use cases.

The Mini-Bee Hybrid project gives this relationship a concrete direction: a light hybrid VTOL concept studied for emergency, medical and humanitarian missions. In this framework, Alten Solidaire helps reinforce the engineering credibility of a project whose purpose is not only to fly, but to serve.