The 5-800mm spacecraft thermal control system quartz plate is a high-performance optical element specially designed for spacecraft thermal management. It is made of high-purity fused silica material and has excellent thermal stability, high transmittance and low thermal expansion coefficient. This product can be widely used in the thermal control system of satellites, space stations, deep space probes and other spacecraft, effectively regulating the temperature distribution inside and outside the spacecraft, ensuring the stable operation of equipment in extreme space environments.  

FAQ: Frequently Asked Questions About Quartz Plates for Spacecraft Thermal Control

Q1: Why is quartz used in spacecraft thermal control systems instead of ordinary optical glass?

Spacecraft thermal control systems are exposed to extreme temperature fluctuations, high-energy radiation, and the risk of collisions with space debris. Quartz has a coefficient of thermal expansion of only 5.5×10⁻⁷/°C—approximately one-twentieth that of ordinary glass—and can withstand transient temperature differences of several hundred degrees Celsius without developing thermal stress cracks. Additionally, quartz offers high transmittance across a broad spectral range from ultraviolet to infrared, allowing it to serve as an optical sensor window that supports both temperature measurement and imaging functions. Under the same conditions, ordinary optical glass is highly susceptible to thermal shock fracture and cannot meet the requirements for reusable spacecraft.

Q2: How should one choose among the three grades—JGS1, JGS2, and JGS3?

JGS1 (Ultraviolet Fused Quartz): With a hydroxyl content of approximately 2,000 ppm, excellent transmittance in the 185–2,500 nm wavelength range, with transmittance reaching 90% at 185 nm; suitable for deep-ultraviolet detection system windows and high-precision optical components.

JGS2 (Optical Fused Quartz): Hydroxyl content of 100–200 ppm, transmittance range of 200–2,500 nm, offering a balanced cost-performance ratio; suitable for conventional thermal control windows and sensor protective covers.

JGS3 (Full-Spectrum Fused Quartz): Virtually free of hydroxyl groups, with a transmission range of 260–3,500 nm and infrared transmittance exceeding 85%, making it suitable for windows in infrared thermal imaging systems and high-temperature radiation shields.

Q3: What exactly does the “custom size range of 5–800 mm” refer to?

5–800 mm refers to the outer diameter or side length range of the quartz plates. Small sizes (5–50 mm) are used for sensor windows and fiber optic connector protection; medium sizes (50–300 mm) are used for equipment viewing windows and thermal control heat sinks; large sizes (300–800 mm) are used for thermal insulation covers on large enclosures or array-type heat dissipation assemblies. We can customize circular, square, or irregular shapes based on customer design drawings, with thicknesses ranging from as thin as 0.5 mm to over 50 mm.

Key Features

-Wide size range: diameter 5mm to 800mm, meeting the thermal control needs of different spacecraft.  

-High heat resistance: able to withstand extreme temperature changes from -200 ° C to 1200 ° C, suitable for extreme space environments.  

-Excellent optical performance: With a transmittance of over 90% (in the 200nm-2500nm wavelength range), it is suitable for various optical thermal control schemes.  

-Low thermal expansion coefficient: reduces deformation caused by temperature changes and improves system stability.  

-Radiation resistance: Resistant to high-energy particle radiation from space, not easily aged after long-term use.  

Application

1. Spacecraft thermal control system

Spacecraft face alternating effects of extremely high temperatures (direct sunlight) and extremely low temperatures (shaded areas) in the space environment. Quartz plates can serve as thermal control windows or radiation radiators to help regulate the internal temperature of spacecraft and prevent electronic devices from overheating or overheating and failure.  

2. Optical load protection

In satellite optical payloads such as cameras and spectrometers, quartz plates can serve as protective windows to reduce the impact of thermal radiation on the optical system and improve imaging quality.  

3. Thermal management of deep space probes

In deep space exploration missions (such as lunar and Mars exploration), quartz plates can be used for thermal shielding or heat dissipation structures to ensure the temperature stability of the probe during long-term missions.  

4. Thermal regulation of solar panels

Used to regulate the temperature of solar panels, prevent efficiency degradation caused by high temperatures, and extend the lifespan of solar panels.  

Customized service

We provide comprehensive customized solutions to meet the special needs of different space missions:

1. Customization of size and shape

-Support customized non-standard sizes within the diameter range of 5mm to 800mm.  

-Multiple shapes such as circular, square, and irregular can be provided to adapt to different spacecraft structures.  

2. Coating reinforcement

-Anti reflective coating (AR): improves light transmittance and reduces energy loss.  

-Infrared reflection/absorption coating: optimizes thermal control performance and adapts to different wavelength requirements.  

-Anti static coating: reduces the accumulation of static electricity in the space environment and improves reliability.  

3. Special performance optimization

-Anti radiation enhancement: Optimize materials for high radiation environments such as near Earth orbit and Jupiter missions.  

-Ultra low thermal expansion: suitable for ultra-high precision optical systems, reducing the impact of thermal deformation.  

Problem solved by the product

1. Extreme temperature fluctuations: The temperature difference in the space environment is extremely large, and the high heat resistance of quartz plates can effectively stabilize the internal temperature of spacecraft.  

2. Thermal interference in optical systems: Reduce the impact of thermal radiation on precision optical equipment and improve data acquisition accuracy.  

3. Long term reliability: The anti radiation and low aging characteristics ensure the stability of the spacecraft's performance during long-term missions.  

4. Lightweight requirements: Compared to metal thermal control materials, quartz plates are lighter, which helps reduce launch costs.

Why Choose Us?

Professional Quartz Products Manufacturer: With years of experience in the quartz processing industry, we have mastered various forming processes—including continuous melting and gas-fusing—and are equipped with precision CNC machining and optical polishing equipment.

End-to-End Quality Control: From testing high-purity quartz sand raw materials to comprehensive inspections of finished product dimensions, optical parameters, and surface quality, we ensure the traceability of every batch.

Flexible Customization: Whether it’s specifications, grades, coatings, or shapes—we can accommodate any request through consultation and customization, supporting both small-batch prototyping and mass production.

Experience in Aerospace Applications: Our products are suitable for high-end industries such as aerospace, semiconductors, and optics, and we have a mature quality management system in place to meet stringent requirements for cleanliness, tolerances, and reliability.  

The quartz plate of the 5-800mm spacecraft thermal control system has become a key component of modern spacecraft thermal control systems due to its excellent thermal management performance and customized services. Whether it's low Earth orbit satellites or deep space exploration missions, we can provide reliable solutions to support the development of aerospace technology.  

Luverre Quartz is a manufacturer focusing on producing various quartz plates, we can produce customized quartz plates in different sizes and shapes, such as square, round, oval and other special shaped designs according to customer's requirements. The processing includes cutting, bending, welding, etc., and there are different colors available, such as transparent quartz plates, opaque quartz plates, milky quartz plates and so on.