Akaflieg Karlsruhe

What Akaflieg Karlsruhe does

Akaflieg Karlsruhe (legal name: Akademische Fliegergruppe am Karlsruher Institut für Technologie e.V.) is a student-run nonprofit association (e.V.) based at the Karlsruhe Institute of Technology (KIT) in Germany, founded in 1927/1928, that designs and builds manned aircraft prototypes — primarily high-performance sailplanes. The organization's flagship project is the AK-X, a tailless 15-meter FAI competition class flying wing glider with 25° sweep, winglets with integrated rudders, and a novel pitch stability system using differential flap deflection; after 15+ years of iterative model testing (1:4 and 1:2 RC models) and full-scale construction beginning in 2016, the prototype was publicly rolled out on January 23, 2026, with first flight expected in 2026. The successor AK-11 project incorporates leading-edge slats and is scheduled for laminar wind tunnel testing at the University of Stuttgart in June 2026. Historical prototypes AK-5, AK-5b, and AK-8 remain part of the active fleet, and the group also restores series gliders and provides winch-launch flight training at the Rheinstetten airfield.

The organization's technology stack centers on fiber-reinforced composite construction (CFK/GFK), CNC-milled molds, vacuum infusion techniques, full 3DEXPERIENCE-based CAD and FEM structural analysis via Dassault Systèmes, and iterative model flight testing plus DLR-conducted ground vibration and flutter analysis. Critical institutional partnerships include KIT (workshop, CNC machining, structural testing via ISTM/WBK/IPEK/VA), DLR (Göttingen and Stuttgart), LXNAV (avionics since 2020), KSB Foundation (major financial sponsor), DG-Flugzeugbau (CNC milling), and HpH Factory (AK-11 fuselage), with the group operating under the Idaflieg umbrella of German academic glider associations. There is no commercial product distribution; the group is funded through individual membership fees (€10/month for flying members, free for non-flying members and first-season new joiners, with winch launches and charter fees included), donations, and corporate sponsorship. All activity is volunteer-driven, with about 5 listed personnel coordinating a rotating student membership drawn primarily from KIT.

Name

Akaflieg Karlsruhe

Legal name

Akademische Fliegergruppe am Karlsruher Institut für Technologie e.V.

Website

https://akaflieg-karlsruhe.de

Company type

Private

Founded year

1928

Operating status

Operating

Headcount range

1–10 employees

Short description

Akaflieg Karlsruhe is a student-run nonprofit association at KIT that designs and builds manned glider prototypes, most notably the AK-X tailless flying wing sailplane, funded by membership fees, donations, and sponsors. It serves KIT students and aviation enthusiasts seeking hands-on aircraft engineering experience.

Ownership category

akta.pro rank

Product category

Recreational Aviation / Aerospace Research

NAICS

Aircraft Manufacturing (336411), Flight Training (611512), Other Aircraft Parts and Auxiliary Equipment Manufacturing (336413)

SIC

Aircraft & Parts (3720), Aircraft (3721)

akta.pro primary industry

Training & Light Sport Fixed-Wing Aircraft Manufacturing (IMABAAAE)

akta.pro secondary industries

Nacelles, Fairings & Aerodynamic Structures (IMABAEAE), Avionics Software, Certification & Safety-Critical Systems (DO-178/DO-254) (IMABAFAK)

Keywords

• Glider aircraft design
• Aerospace engineering research
• Sailplane prototyping
• Composite materials manufacturing
• Gliding flight training

Headquarters

HQ city

Karlsruhe

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Infrastructure, Others

Revenue model

1. Membership Fees: Flying members pay €10/month; non-flying members pay €0. New members receive free first flying season. All winch launches (€4.50/launch), landing fees, and charter fees (€6/h) are included for active members at Rheinstetten gliding site.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels5 records

Core offering

Akaflieg Karlsruhe is a student-run nonprofit academic flying group at KIT that designs, builds, and tests original aircraft prototypes, primarily high-performance gliders. Its flagship AK-X is a tailless flying wing sailplane in the FAI 15m class developed over 15+ years, with the full-scale prototype unveiled in January 2026. The organization also provides gliding flight training to members at its Rheinstetten airfield using winch launches and operates out of a workshop on KIT Campus West.

Product overview

Akaflieg Karlsruhe is a student-run flying group at KIT (Karlsruhe Institute of Technology) that designs and builds aircraft prototypes, primarily high-performance gliders. The organization operates a multi-project portfolio centered on innovative aircraft development: the flagship AK-X is a tailless flying wing glider in the FAI 15m class (currently undergoing certification for first flight in 2026), the AK-11 is its successor project with leading-edge slats, and historical prototypes (AK-5, AK-5b, AK-8) are maintained. The group also restores series gliders (Twin Shark XOJ) and provides flight training services. All projects are developed using advanced composite materials (carbon fiber reinforced plastics) and extensive wind tunnel testing, with prototypes built using CNC-milled molds and vacuum infusion techniques.

Differentiator

Problem solved

Functional benefit

Products and services

• AK-X Flying Wing Glider A tailless 15-meter class sailplane with a swept-back flying wing configuration (25° sweep) and winglets, designed to increase performance by eliminating the tail unit and reducing drag. Specifications include 10.2 m² wing surface, 1.4 m winglets, 550 kg maximum mass, 265 km/h maximum speed, and 195 km/h maneuvering speed. Built for the FAI 15m competition class.
• AK-11 Glider Project The successor glider project to the AK-X, featuring a leading edge slat (Vorderkantenklappe) for next-generation glider performance improvement. Uses a Twin Shark fuselage from HpH Factory.
• AK-X Demonstrator Model A full-scale demonstrator model of the AK-X featuring articulated leading edge slats and control surfaces for testing the kinematic mechanisms and aerodynamic behavior of the wing flaps.
• AK-8 Glider Previous Akaflieg Karlsruhe glider project featuring an elliptical leading edge wing design and carbon fiber reinforced plastic construction. Still operated by the organization.
• Gliding Flight Training Flight training services for members including winch launches (€4.50/launch) and flight instruction at the Rheinstetten gliding site. Charter fees of €6/h are included for active flying members.
• Twin Shark XOJ Restoration Project Restoration and maintenance project for the HpH Twin Shark series glider, including repairs to wing surfaces, tail assembly, and finishing work. Maintained for member flight operations.

Quantifiable outcome

• AK-X achieves maximum speed of 265 km/h, maneuvering speed of 195 km/h, with only 550 kg maximum mass

Named customers1 record

Segments1 record

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• Karlsruhe Institute of Technology (KIT)coreStrategic or Co-development PartnerPrimary institutional partner providing infrastructure through the Institute of Fluid Mechanics (ISTM) and workshop facilities. KIT provides CNC machining capabilities through various institutes (WBK, IPEK, FSM) and access to testing facilities. The organization is officially registered as 'Akademische Fliegergruppe am Karlsruher Institut für Technologie e.V.'
• DLR (German Aerospace Center)coreStrategic or Co-development PartnerConducts ground vibration testing, structural analysis, and fracture testing at DLR facilities in Göttingen and Stuttgart. Critical for flutter analysis and structural validation required for aircraft certification.
• Dassault SystèmescoreTechnology or IntegrationProvides full access to 3DEXPERIENCE platform for CAD design and Product-Data-Management (PDM). All development and construction work now conducted in integrated CAD environment.
• University of Stuttgart - Laminar Wind TunnelminorStrategic or Co-development PartnerAK-11 wind tunnel model scheduled for testing in the laminar wind tunnel at University of Stuttgart in June 2026.
• Idaflieg (German Academic Gliding Association)coreStrategic or Co-development PartnerUmbrella organization of German academic glider groups. Enables participation in joint measurement projects, summer meetings, and provides access to flight performance measurement programs.
• BoeingminorGTM or Marketing PartnerPresented 'Digital Innovation and Sustainability' lecture at 95th anniversary celebration in November 2023 as part of joint aerospace outreach event.
• Versuchsanstalt für Stahl, Holz und Steine (VA)coreStrategic or Co-development PartnerKIT testing facility supporting structural load testing including landing gear, nose tow hook, and control system validation tests. Provided measurement technology and test execution support.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Alexander Schleicher GmbH: Established German glider manufacturer producing competition and training sailplanes. Comparable as a manufacturer of FAI 15m and other competition class gliders — the same category the AK-X targets upon completion.
• Grob Aircraft: German aircraft manufacturer with heritage in glider and motor glider production. Comparable as a broader German aerospace manufacturer that has historically competed in the same light aircraft and training aircraft categories as Akaflieg's designs.
• Schempp-Hirth Flugzeugbau: Leading commercial manufacturer of high-performance gliders and sailplanes in Germany. Comparable as they produce FAI 15m competition class gliders competing with the AK-X in the same market category, though at commercial scale.

Emerging players

• Lange Aviation: German aircraft manufacturer focused on innovative glider and electric aircraft designs. Comparable as a German-based aircraft developer pursuing unconventional aerodynamic configurations, similar in spirit to Akaflieg Karlsruhe's flying wing innovation.

Regional players

• HpH Factory: Czech Republic-based glider manufacturer partnering with Akaflieg Karlsruhe on the AK-11 project by supplying the Twin Shark fuselage. Comparable as a niche glider manufacturer with innovative composite construction techniques.

Direct peers

• Akaflieg Berlin: Berlin-based academic flying group within the Idaflieg umbrella. Comparable as a student-run aircraft design organization with similar R&D approach, gliding training, and project-driven development model.
• Akaflieg Darmstadt: Academic flying group at TU Darmstadt, a member of Idaflieg. Comparable in mission, student-led structure, and focus on innovative glider prototype development with institutional university support.
• Akaflieg München: Academic flying group at TU Munich that builds glider prototypes. Comparable as a student organization with similar membership structure, aircraft development projects, and affiliation with a major German technical university.
• DG-Flugzeugbau: German glider manufacturer and Akaflieg Karlsruhe partner. Comparable as a glider manufacturer with historical cooperation on multiple Akaflieg projects (including AK-8's DG-600 fuselage) and provides CNC milling services for wing form manufacturing.
• Akaflieg Stuttgart: Fellow German academic flying group at the University of Stuttgart that designs and builds glider prototypes. Directly comparable as a student-run nonprofit with similar membership model, KIT-associated institutional partnerships, and a history of developing innovative glider designs.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCtk6WKPD-yeOH4Sl_Bjd4_A
• Facebookfacebook.com/akaflieg.karlsruhe
• Instagraminstagram.com/akaflieg_karlsruhe
• LinkedInlinkedin.com/company/akaflieg-karlsruhe

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

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M&A

Investments

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Frequently asked questions about Akaflieg Karlsruhe