Development of Air Revitalisation System for Gaganyaan Crew Module
- Paper number
GLEX-2025,5,1,6,x93700
- Author
Ms. Kriti Raj, Indian Space Research Organization (ISRO), India
- Coauthor
Mr. Ray DT, Vikram Sarabhai Space Centre, Thiruvananthapuram-695 022, INDIA, India
- Coauthor
Dr. KODEESWARAN M, Vikram Sarabhai Space Centre, Thiruvananthapuram-695 022, INDIA, India
- Coauthor
Mr. VINOD SS, Vikram Sarabhai Space Centre, ISRO, Thiruvananthapuram, India
- Year
2025
- Abstract
The Human space flight program of Indian Space Research Organisation “Gaganyaan” has the primary objective of transporting humans to orbit, staying at orbit and finally bringing them back to earth safely after achieving all mission objectives. The overall human space mission involves three phases namely: Ascent phase, Orbital phase and Descent phase. During all the three phases, Crew members of the mission have to be supported with earth like atmosphere inside the crew module. This critical component of the Crew Module is the Environmental Control and Life Support System (ECLSS), which ensures the safety, health, and well-being of the crew in the extreme conditions of space. ECLSS is designed to provide breathable air, control temperature and humidity, manage waste, and monitor vital signs, thereby catering to crew safety and comfort. Given the mission's complexity, the reliability and efficiency of the life support system are paramount, as any failure will adversely affect crew safety. This paper addresses the design and development of Air Revitalization System (ARS) which is a critical part of the life support system of the Crew Module.\\ Air Revitalization System based on chemicals such as Lithium Hydroxide and Potassium Superoxide is planned for the mission. The configuration of ARS comprising of canister, blower and associated hoses are designed and optimised considering the efficiency of the chemical system, ease of operation by crew, mass & volume constraints etc. The details of the ARS developed for Gaganyaan mission is briefed in this paper. This paper presents functional test results, addressing areas such as pressure drop across the chemical beds and CO₂ absorption efficiency. Computational Fluid Dynamics (CFD) simulations were carried out for validating the flow through the canister. The canister's bed life was evaluated through CO₂ absorption testing in a sealed chamber, simulating human metabolic rates. Additionally, the system's CO₂ removal rate from the cabin environment was studied to assess overall efficacy.
- Abstract document
- Manuscript document
GLEX-2025,5,1,6,x93700.pdf (🔒 authorized access only).
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