Indian Human Spaceflight Programme


View: https://x.com/TitaniumSV5/status/1746737267203621212
Tender Document https://eproc.vssc.gov.in/common/vi...300022301&id=ff8081818c6d2b13018caf540fb61586


1/n (Gaganyaan ECLSS tender document)Environmental Control and Life Support System (ECLSS) consists of:Thermal & Humidity Control System (THCS) Cabin Pressure Control System (CPCS) Air Revitalization & Trace Contaminant Control System (ARS)ECLSS Control system #ISRO




2/n The Environment control and life control system has to cater to 3 crew for 7-day mission. The cabin specifications considering the human physiological requirements and comfort are as follows:


3/n Schematic of the ECLSS system:


4/n Total volume of Gaganyaan crew module cabin is 6.7㎥.Cabin air volume is 4.8㎥.Optimal cabin temperature - 23 ± 3˚C (prechilled to 18 ˚C before ascent and deboost)Relative humidity - 30-70%Nominal cabin pressure - 101kPa

View attachment 9378

5/n ECLSS duty cycle duration rating -In-orbit - 7 days Pre-launch - 2.5hoursAscent to orbit - 20min Descent from orbit - 50min Emergency time safety margin:In-orbit - 130min Descent - 50min Total - 180min

6/n Open loop ECLSS for a duration up to 7 days supporting 3 crew for LEO orbit of 400 km. System shall be modular which can be scaled for different mission duration 3-7 days and number of crews from 1-3.

7/n Crew activities required for ECLSS functioning:


8/n Redundancy in systems including crew intervention.System which will generate O2 and remove CO2 in case Cabin Ventilation Unit (CVU) is not operational.

9/n Triple redundancy with FDI and re-configuration logic for sensors and electronics – Detailed FDI algorithm shall be generated.Provision for crew override/manual operation for mechanical systems. Provide real time display/warnings to crew about critical parameters.


10/n Thermal and Humidity Control System (THCS):Maintain thermal conditioning of the CM so as to ensure crew health and comfort and to ensure that all systems/ equipment can be maintained within their operating temperature envelopes by removing or adding sensible heat.

11/n The main function of cabin thermal control system is to maintain the cabin temperature within 23± 3C (Nominal) and relative humidity 30 to 70%. The equipment temperature shall be maintained using cold plate. Electronic equipment mounted on the cold plate<45°C)

12/n It shall be able to accept thermal energy from crew and components(includes electronic components, pumps, heat exchangers, fans & cold plates).Transport the thermal energy from heat source (CM) to heat sink (SM radiators) using close loop mechanically pumped system.

I will be very grateful sir if you kindly share the all document, the link is not working
 
The article says that the 8 Gaganyaan missions including the BAS-1 will be completed by Dec 2028.

I don't think the H1 mission will be delayed beyond 2026.
If you believe articles you will be forced to take large amount of copium, be realistic, H1 won't be before 2028.
All 8 missions will be completed only by 2030

G1 & TV-D2 ,PAT-02, IDRSS-1 - 2025
G2,TV-A1, IDRSS-2 - 2026
G3, TV-A2 -2027
H1, , -2028
G4,BAS-1, -2029
G5,H2 - 2030
 
If you believe articles you will be forced to take large amount of copium, be realistic, H1 won't be before 2028.
All 8 missions will be completed only by 2030

G1 & TV-D2 ,PAT-02, IDRSS-1 - 2025
G2,TV-A1, IDRSS-2 - 2026
G3, TV-A2 -2027
H1, , -2028
G4,BAS-1, -2029
G5,H2 - 2030
I am in no rush!

Let them take as much time as required. There is no incentive like being first in World/Asia in this feet. We will be 4th nation to do so independently.​
 
If you believe articles you will be forced to take large amount of copium, be realistic, H1 won't be before 2028.
All 8 missions will be completed only by 2030

G1 & TV-D2 ,PAT-02, IDRSS-1 - 2025
G2,TV-A1, IDRSS-2 - 2026
G3, TV-A2 -2027
H1, , -2028
G4,BAS-1, -2029
G5,H2 - 2030

I was watching Dr. Somnath's interview. He said that ISRO has prioritized Gaganyaan over everything else.This explains why we had so few launches this year.

but maybe,you're right...ISRO has a historical tendency to give unrealistic timelines.
 
I was watching Dr. Somnath's interview. He said that ISRO has prioritized Gaganyaan over everything else.This explains why we had so few launches this year.

but maybe,you're right...ISRO has a historical tendency to give unrealistic timelines.
They did ,but even after that it will take time, HSF is not easy....only recently they have decided to make the pressurised crew module at HAL, before that they were discussing with goras to import it
 
I was watching Dr. Somnath's interview. He said that ISRO has prioritized Gaganyaan over everything else.This explains why we had so few launches this year.

but maybe,you're right...ISRO has a historical tendency to give unrealistic timelines.
Also what I have said is most realistic, I gave 1 year gap between each mission

TV-D1 happened last October, where is TV-D2? It is no where near
 
H-LVM3 wind tunnel testing by CSIR-NAL
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Copied from the Mint.​

ISRO launches India's first analog space mission in Leh: All about the project to simulate extraterrestrial life​

  • India's first analog space mission has been launched by ISRO in Leh. The initiative aims to replicate conditions on Mars and the Moon.

1730531428069.webp
ISRO's new analog mission.
The Indian Space Research Organisation (ISRO) launched the country's first analog space mission in Leh, Ladakh, on Friday. The mission was developed by a partnership of the Human Spaceflight Centre, ISRO, AAKA Space Studio, the University of Ladakh, and IIT Delhi. It is also supported by the Ladakh Autonomous Hill Development Council.

ISRO announced the novel initiative while sharing the picture on X.

“India’s first analog space mission kicks off in Leh! A collaborative effort by Human Spaceflight Centre, ISRO, AAKA Space Studio, University of Ladakh, IIT Bombay, and supported by Ladakh Autonomous Hill Development Council, this mission will simulate life in an interplanetary habitat to tackle the challenges of a base station beyond Earth," ISRO wrote on X.


View: https://x.com/isro/status/1852218954665578770
The mission aims to simulate conditions similar to those on Mars and the Moon while considering Ladakh’s extreme climate and geographical terrain. The mission tries to replicate the challenges that astronauts would face in extreme conditions of celestial bodies.
Ladakh is a cold desert and the climate is a mix of desert and arctic regions. The temperature in the region may range from 3 to 35 °C in summers and −20 to −35 °C in winters. The region experiences heavy snowfall during winter.

According to NASA, analog missions are field tests in locations that are similar to extreme space environments."NASA engineers and scientists work with government agencies, academia, and industry to gather requirements for testing in harsh environments before they are used in space," NASA said.

The mission aims to save time, money and manpower by mimicking a similar environment on Earth before investing in space, it added.

These field tests include new technologies, robotic equipment, vehicles, habitats, communications, power generation, mobility, infrastructure, and storage. Behavioural effects such as isolation and confinement, team dynamics, menu fatigue, and others, are also observed.

“Analog missions prepare us for near-term and future exploration to asteroids, Mars, and the Moon. Analogs play a significant role in problem-solving for spaceflight research," NASA said.
 

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