MBB Bo 105 CBS-5 Development Announcement & Tentative Completion Date
Project Stratosphere is thrilled to announce the development of the iconic MBB Bo 105 CBS-5 helicopter for MSFS 2020 and 2024! Originally unveiled as our next aircraft on our Discord server in November 2022, the project faced an unexpected pause due to external time constraints affecting all three developers. However, since August 2024, development has been back in full swing. Now, as we near completion, we’re ready to share an in-depth look at our most ambitious project yet.
This post will take you through every stage of development, from 3D modelling and textures to flight model and sound design. You will also get a first-look at in-game screenshots and, of course, the tentative completion date and pricing details. Please note that the renders and screenshots shown here are from an early development build.
BACKGROUND
The MBB Bo 105 CBS-5 is a twin-engine, multi-role light utility helicopter developed by Messerschmitt-Bölkow-Blohm (MBB) in West Germany. Renowned for its exceptional versatility, maneuverability, and precision control, earning it a legendary status in the aviation industry. Designed to accommodate one or two pilots and up to four passengers, the helicopter is celebrated worldwide for its reliability and an outstanding performance across various demanding environments.
With its inaugural flight in 1967, the Bo 105 remained in continuous production until 2001, making it one of the longest-produced light helicopters in history. As the world’s first twin-engine light helicopter, it represented a major leap in rotorcraft technology, offering increased power, enhanced high-altitude performance, greater speed, and higher payload capacity than its single-engine counterparts. Its dual-engine configuration also provided an added layer of safety. What truly sets the Bo 105 apart is its hingeless, rigid rotor system—a ground-breaking innovation in helicopter design. Its four-blade rotor is mounted directly onto a single milled titanium block, eliminating the need for hinges and significantly improving control responsiveness. This system grants the helicopter unparalleled agility, enabling it to perform aerobatic maneuvers such as loops and rolls—an incredibly rare capability in civilian helicopters. Thanks to this, the Bo 105 became a staple of airshows and aerobatic displays, further cementing its iconic status. Powered by two Allison/Rolls-Royce 250-C20B turboshaft engines, each producing 420 horsepower, the Bo 105 excels in high-altitude, high-temperature, and high-performance flight conditions. Its power-to-weight ratio gives it remarkable climb rates, precise hovering capabilities, and rapid directional changes, making it a preferred choice for operators who demand speed, agility, and reliability.
The Bo 105 set new standards in light helicopter design, influencing future generations of aircraft. Even decades after its introduction, it remains one of the most respected helicopters ever built. Whether performing life-saving rescue missions, thrilling airshow crowds, or supporting tactical military operations, the Bo 105 continues to be a symbol of engineering excellence, inspiring helicopter enthusiasts and professionals alike.
3D MODELLING
Creating a highly detailed yet optimized 3D model of the MBB Bo 105 CBS-5 has been one of the most demanding aspects of this development. Using Blender as our primary modelling software, every component from the rotor assembly to the cockpit instruments has been meticulously recreated to ensure realism and immersion. The exterior model consists of 1.9 million triangles, capturing the fine details of the fuselage, rotor system, among other structural elements. Similarly, the interior model contains 800,000 triangles. Taking full advantage of the Level of Detail (LOD) system, we have ensured optimum performance in Microsoft Flight Simulator. Our model guarantees the users an experience with stunning details while still maintaining smooth and stable frame rates.
A close-up of the hingeless, rigid rotor system, a defining feature of the Bo 105.
A detailed look at the Bo 105’s cockpit panel, showcasing the extensive modelling work behind every switch and gauge.
TEXTURES
Every surface of the helicopter has been recreated using several 2K textures. By utilizing hundreds of 2K textures over fewer 4K or 8K textures, the Bo 105 maintains a high texture density as well as an overall smooth performance. From the fuselage to the smallest rivet, you’ll notice realistic weathering and wear patterns—scuff marks, dirt, and fading that reflect years of service. The cockpit is just as meticulous, with every gauge and switch rendered in sharp, true-to-life textures, offering an immersive pilot experience.
FLIGHT MODEL
The realistic flight model is a highlight of this product. Developed by a real-life helicopter pilot with firsthand experience in the Bo 105, this flight model is built on the insights and knowledge of someone who has been trained on this very helicopter. This expertise ensures that every movement in the sky feels as authentic as possible. The advanced flight model accurately simulates the Bo 105's handling characteristics, including its responsive agility, precise hover control, and behavior during autorotation. For a closer look at the flight model in action, check out this exclusive video we’ve prepared:
Please note that the project version featured above is intentionally minimalistic with several textures and details removed for testing purposes.
SOUNDS
To bring the MBB Bo 105 to life, we partnered with a highly experienced sound engineer to develop a comprehensive Wwise audio package. Recorded previews of sounds will be shared in April.
ELECTRONIC FLIGHT BAG (EFB)
We are also developing an Electronic Flight Bag (EFB) system to enhance operational efficiency and provide valuable in-flight tools. While the EFB will not be included in the initial MSFS 2020 release, it is planned for future updates and will be fully integrated with the MSFS 2024 version.
The EFB will feature essential applications such as an interactive navigation map, real-time METAR weather updates, and comprehensive procedural checklists. Through the Ground Handling app, players are given the option to customise their helicopter variant. Designed with a clean UI that seamlessly integrates into the cockpit, the EFB ensures ease of use. Screenshots are available for a preview of the user interface:
The intuitive home screen of the MBB Bo 105's Electronic Flight Bag (EFB), providing easy access to all essential tools and features for seamless operations.
The Ground Handling app in action, allowing you to customise the visibility of exterior components.
IN-GAME SCREENSHOTS
TENTATIVE RELEASE DATE & PRICE
The MBB Bo 105 project for MSFS 2020 is expected to be completed by May 25th, with an exclusive release through the Marketplace shortly after, priced at $19.99. Details regarding the MSFS 2024 version, enhanced to take full advantage of its new features, will be revealed in May 2025. You’ll be able to access and install it seamlessly via the Marketplace, ensuring a smooth and hassle-free experience.