ÜF-250 small satellite launcher in testing
A hybrid–liquid launcher designed to carry up to 250 kg to low Earth orbit.
Launch systemsRocket, missile and space technologies
Reaching orbit with domestic rocket and satellite technologies
From solid and hybrid motors to guidance systems, from CubeSats to launch services: design, production and testing under one roof.
GU-1 CubeSat series in orbit
Six satellites active in Earth observation and communication missions at 550 km.
Satellite programmesRocket motor test firings
Static firing and flight tests in the video gallery.
Watch videos- 01Founded
- 2004
- 02Engineers and technicians
- 620
- 03Successful tests and flights
- 184
- 04Satellites in orbit
- 6
About us
From rocket to satellite, under one roof
Gökbilge was founded in 2004 by a team of engineers from university research. Today it designs, produces and tests solid and hybrid rocket motors, guidance and navigation systems, CubeSats and ground segments in-house.
- Own motor test stand and coastal test range
- Satellite integration and clean-room infrastructure
- AS9100D and AQAP-2110 certified
Rocket · Missile · Space · Munitions
Systems
Filter our rocket, missile, space and munition systems by category, range, mass, propulsion type and platform. Information is for general presentation; detailed technical data is provided only to authorised institutions.
01Rocket Systems
ZR-122 Multiple Launch Rocket System
- Launch / deployment platform
- Land
- Range
- 40 km
- Launch mass
- 24,000 kg
02Rocket Systems
ZR-300 Long-Range Rocket System
- Launch / deployment platform
- Land
- Range
- 120 km
- Launch mass
- 1,500 kg
03Rocket Systems
SR-8 Scientific Sounding Rocket
- Launch / deployment platform
- Ground station / pad
- Launch mass
- 520 kg
- Propulsion
- Hybrid
01Missile Systems
SK-70 Cruise Missile
- Launch / deployment platform
- NavalLand
- Range
- 200 km
- Launch mass
- 630 kg
02Missile Systems
KY-25 Short-Range Air Defence Missile
- Launch / deployment platform
- Land
- Range
- 25 km
- Launch mass
- 22 kg
03Missile Systems
TH-12 Anti-Tank Guided Missile
- Launch / deployment platform
- LandAir
- Range
- 12 km
- Launch mass
- 49 kg
04Missile Systems
HS-100 Air-to-Surface Guided Missile
- Launch / deployment platform
- Air
- Range
- 100 km
- Launch mass
- 320 kg
01Space Systems
GU-1 Earth Observation CubeSat (6U)
- Launch / deployment platform
- Space
- Launch mass
- 9 kg
- Propulsion
- Electric / none
02Space Systems
ÜF-250 Small Satellite Launch Vehicle
- Launch / deployment platform
- Ground station / padSpace
- Launch mass
- 26,000 kg
- Propulsion
- Hybrid
03Space Systems
YM-3 S/X-Band Ground Station Antenna
- Launch / deployment platform
- Ground station / padSpace
- Launch mass
- 2,800 kg
- Propulsion
- Electric / none
01Munitions
HG-500 Precision Guidance Kit
- Launch / deployment platform
- Air
- Range
- 15 km
- Launch mass
- 95 kg
02Munitions
ÖZ-155 Extended-Range Artillery Munition
- Launch / deployment platform
- Land
- Range
- 45 km
- Launch mass
- 46 kg
Mission log
Space Programmes
01Satellite Programmes
GU-1 Earth Observation CubeSat Series
Six satellites placed in orbit since 2021, supplying agricultural and disaster monitoring data.
View Details
02Launch Systems
ÜF-250 Small Satellite Launcher Programme
A two-stage launcher with 250 kg payload capacity; the first-stage motor reached 140 kN thrust.
View Details
03Scientific Missions
SR-8 Scientific Sounding Rocket Campaign
Eleven university experiments carried to 120 km; the payload bay was recovered intact.
View Details
04Satellite Programmes
GU-2 IoT Communication CubeSat
A 3U communication satellite collecting data from low-power sensors and serving rural areas.
View Details
05Launch Systems
Hybrid Motor Test Facility
A new remotely operated static firing test stand measuring thrust up to 150 kN.
View Details
06Ground Segment
Ankara–Sinop–Gebze Ground Station Network
18 satellite passes a day are tracked by a three-station network.
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Orbital mechanics
Calculate orbital velocity and period
Enter the circular orbit altitude to see the satellite's speed, period and number of orbits per day.
Flight dynamics tool
Circular Orbit Velocity & Period Calculator
Enter the orbit altitude to see the satellite's speed, orbital period and number of orbits per day.
From design to launch
Motor, guidance and satellite capabilities
01Solid and hybrid propellant motors and thrust control systems
Rocket Motors & Propulsion
Motor design, production and static firing tests across thrust classes from sounding rockets to small launchers.
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02Inertial navigation, GNSS integration and flight computers
Guidance, Navigation & Control
Inertial measurement units, flight computers and algorithms for flight control of rockets and guided systems.
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031U–12U platforms, payload integration and orbit operations
Small Satellite & CubeSat Systems
CubeSat platforms for Earth observation, communication and scientific missions; clean-room integration and test service.
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04Sounding rocket and small satellite launch missions
Launch Services
Sounding rockets for scientific microgravity experiments and a small launcher service to low Earth orbit.
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05Vibration, shock, thermal vacuum and static firing tests
Test & Qualification
Space qualification for satellite and rocket components: test infrastructure compliant with ECSS and MIL-STD standards.
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06S/X-band antenna systems and mission control software
Ground Station & Mission Control
Ground station and mission control centre solutions for satellite tracking, telemetry–command and data downlink.
View DetailsUnder one roof
Integrated infrastructure from ground to orbit
01
Propulsion technology
Solid and hybrid propellant motors; static firing facility in-house.
02
Guidance & navigation
Precision guidance with inertial navigation, GNSS and seeker heads.
03
CubeSats
1U–12U platforms; payload integration and orbit operations.
04
Launch services
Scientific and commercial missions with sounding rockets and small launchers.
05
Qualification infrastructure
Vibration, thermal vacuum and shock tests.
Countdown
Test Firings & Exhibitions
Space agenda
News
TechnologyHow Does a Hybrid Rocket Motor Work? Comparison with Solid and Liquid FuelThe advantages, limitations and applications of hybrid motors that combine a solid fuel with a liquid or gaseous oxidiser.
Space GuideWhat Is a CubeSat? Stages and 2026 Cost of a Mission
NewsSR-8 Campaign: 11 University Experiments at 120 Kilometres
Space GuideSpace Debris and Responsible Orbit OperationsCareers
Put your signature on the next launch
Join our propulsion, guidance, avionics and satellite engineering teams; space programme internships are open for graduates.
Programme stakeholders
Organisations we reach orbit with
- Ulusal Uzay Araştırma Konsorsiyumu
- Marmara Üniversiteler Birliği
- Orta Anadolu Tarım Kooperatifleri
- Kıyı Haberleşme Operatörü
- Uluslararası Uydu Operatörü Birliği
- Körfez Savunma Tedarik Ofisi
- Kara Havacılık Sistemleri A.Ş.
- Doğu Akdeniz Üniversiteleri Ağı
Let us collaborate on your space missions
Contact us for small satellite, launch, motor and test services. Visit our careers page to join our engineering team.