Core technologies
01
Core technology of recoverable spacecraft
Core technology advantages
  • 01
    Technology barrier
    The first recoverable technology applied in Commercial Aerospace
  • 02
    Cost reduction
    The first master of global positioning intelligent orbit transfer technology
  • ANormal track operation section
    The satellite is affected by various kinds of perturbations when it runs on the earth's force indicator
  • BDerailment section
    Braking, engine ignition, re-entry deceleration, dynamics of variable mass system model
  • CFree falling section
    When the reentry module decelerates and enters the near earth elliptical orbit, the influence of atmospheric resistance will gradually increase
    Over 100km
  • DReentry section
    The capsule decelerates and descends under the combined action of gravity and atmospheric force
    100-15km
  • ELanding section
    Open the parachute, and the re-entry module will land under the parachute system
    Below 15km
One of the characteristics of"three highs": high technology
  • Eparation of satellite and rocket, satellite in orbit
    SHigh load ratio and high reliability satellite platform technology
    Through the optimization design of the system, the load is increased on the premise of ensuring the reliability of the satellite
  • Free falling section
    Autonomous orbit determination, orbit change and derailment control technology
    Independently judge the brake derailment point, and quickly complete a series of actions, such as attitude adjustment, brake ignition, spin up, return cabin separation, etc
  • Pneumatic thermal protection technology
    Trajectory return phase
  • Ballistic return and parachute Technology
    Landing section
  • Low cost rapid search and rescue technology
  • Commercial recoverable satellite system technology
Commercial recoverable satellite
High load ratio and high reliability satellite platform technology
Compared with conventional satellite, the remarkable characteristics of recoverable satellite are: short working time, higher reliability requirements;
MEMS technology is used to improve the load ratio by using new type of nano onboard single machine and system;
Combined with the characteristics of short working time, commercial devices should be used as far as possible to effectively reduce the cost by means of scientific screening and backup;
By means of system integration and multidisciplinary optimization, the reliability and integration of satellite platform can be effectively improved;
By means of system integration and multidisciplinary optimization, the reliability and integration of satellite platform can be effectively improved;
Autonomous orbit determination, orbit change, off-orbit control technology
Commercial return satellites use the engine to de-orbit after a single ignition, enter the atmosphere and return to the ballistic trajectory, and land within the designated landing are;
The commercial recoverable satellite uses the engine to ignite once, then brake to leave orbit, and enter the atmosphere to return to the orbit, landing in the designated landing area.
Therefore, the time, position and direction of brake ignition determine whether the re-entry module can land smoothly.
High precision autonomous navigation orbit determination technology based on Beidou navigation system;
Mature and highly reliable brake control technology;
High precision time unification technology based on Beidou navigation system.
Pneumatic thermal protection technology
After reentry into the atmosphere, the reentry module flies at high speed in the atmosphere (close to Mach 30), and the surface temperature of the reentry module rises sharply,It is necessary to take some protective measures to avoid burning of the re-entry cabin and internal temperature control.
Scientific simulation calculation method of aerodynamic thermal protection;
Pneumatic thermal protection materials and implementation measures;
Ground test method;
Testing method for pneumatic thermal protection.
Ballistic return and parachute Technology
After the reentry satellite enters the atmosphere, it adopts the full trajectory return mode (no control), so the accurate trajectory calculation directly affects the landing point accuracy of the reentry module.
In addition, in order to ensure that the landing speed of the re-entry module is not too high, the parachute design, parachute opening height and parachute opening method are also very important.
Accurate trajectory calculation model and algorithm, accurate trajectory simulation mode;
Parachute design and parachute opening mode design.
Return process:
1 - on orbit operation
2 - adjust the return attitude
3 - brake the rocket to work, derail
4-spin up
5-propulsion module separation
5-propulsion module separation
7 - parachute opening
8-recovery module landing
Technology of recoverable satellite system
Compared with the conventional satellite, the recoverable satellite system is more complex, involving more subsystems and interfaces with external large-scale systems, and the implementation is more difficult.
Therefore, from the perspective of system science, the technology is more difficult.
Multidisciplinary optimization method based on system level optimization;
Scientific system management mode and implementation means;
Efficient means of inter system coordination and inter system coordination.
Min
S.t. Ji=0
  • Rail discipline optimizer
    Min J1
    S. T. track height and inclination, etc
    Value constraint
    Ground coverage requirements
    Analysis and calculation of track discipline
  • Analysis and calculation of track discipline
    Min J2
    S. T. vehicle restrictions
    Total satellite mass constraint
    Satellite envelope radius and altitude, etc
    Value constraint
    Strength and stiffness constraints
    Structure subject calculator
  • Power supply subject optimizer
    Min J3
    S. T. the mass and volume meet the requirements
    The energy can meet the requirements of the whole satellite power consumption
    Power supply subject calculator
  • Load discipline optimizer
    Min J4
    S.t. MTF<0.5
    The ground resolution meets the performance requirements
    Load subject calculator
02
Integration of satellite and rocket with high load ratio
  • Separation design of traditional satellite and rocket
    Rocket and launch cost: 35 million yuan
    Cost of satellite development and production: 25 million yuan
    Effective return load: 50kg
    Large scale system interface: rocket and launch site, satellite and rocket, satellite
    Satellite and launch site, satellite and ground TT & C Station
  • Integrated design of star and arrow
    Cost of integrated development and production of satellite and rocket: 40 million yuan
    Effective return load: 100 ~ 150kg
    It involves large system interface: rocket and launch site, satellite and ground TT & C station
By loading the capsule on the last stage of the rocket, the capsule will be put into the earth orbit. After a certain period of time (1 ~ 3 weeks) in the earth orbit, the capsule will be put into the earth orbit again through the ignition and braking of the rocket's final stage engine, so as to realize the ballistic return.
  • The last stage of rocket
    Return capsule
  • Put into orbit on
  • orbit development
    Space science experiment
  • Ignition and braking
    of the last stage
    rocket engine
  • Eject the return capsule
    into the return orbit
    to realize the ballistic return
On this basis, multiple re-entry modules can be designed. According to different requirements of on orbit experiments, the re-entry module can be ejected at different time points to return to the ground.
  • After meeting the requirements of on orbit experiment, the first return module will pop up
  • The last stage of the rocket and the remaining return module continue to carry out space experiments in orbit
  • After meeting the requirements of on orbit experiment, pop up the second return module
03
Shuttle ship
Research and development of Chinese space shuttle
  • 01
    Research and development of high safety, high comfort and high reliability aerospace vehicles for the public
  • 02
    Reduce costs through reusable technology and flight like large-scale operation
  • 03
    Differentiated service operation for high end and mass customers high end revenue subsidies R & D and mass services
  • 04
    Extra revenue from space port theme tourism experience
    Subsidy operation
Our technical feasibility
Existing orbital space
  • technical difficulty
    High
  • system complexity
    High
  • environment is complex
    The flight
  • strategic value
    High
Our space shuttle ship
  • The technical
    low
  • complexity multi-sensor networks
    low
  • environment is much simpler
    Simple
  • economic value
    High
China is the third country in the world to independently master the orbital space technology, and it has been more than 20 years of engineering development, and the relevant technology has been quite mature! Our team is the core technology backbone of the orbital space industry chain!
Key technologies mastered by the team
  • Spacecraft Overall Design Technology
  • Overall design technology of launch vehicle
  • Reusable engine technology
  • Horizontal takeoff and landing technology
  • Autonomous trajectory planning and navigation technology
  • Air release separation technology