As I have said twice now, a
crisis can involve abnormal conditions where the usual means aren't available.
Your third paragraph is not correct at all. Dragon has life support and reentry acceleration of 3.5g.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/2011001...
http://www.nasa.gov/pdf/361838main_11%20-%20SpaceX%20Augusti...
Quoting from the first pdf:
Environmental Control System
Astronauts will enter Dragon to remove cargo.
Dragon’s cabin is habitable, with air circulation, lighting, fire detection and suppression, air temperature control,
pressure and humidity monitoring.
Transporting Crew
While it initially is transporting cargo, Dragon was designed from the beginning to transport crew and is currently
undergoing modifications to make this possible. Crew configuration will include life support systems, a crew escape
system, and onboard controls that allow the crew to take control from the flight computer when needed. This focus on
commonality between cargo and crew configurations minimizes the design effort and simplifies the human-rating
process, allowing systems critical to Dragon crew safety and ISS safety to be fully tested on unmanned flights.
And the second pdf:
Crew Capability
•Both Dragon & Falcon 9 were designed from
inception to readily accommodate crew
•Immediate focus is on cargo for COTS
& CRS commitments, BUT…
•In every design decision, the ability to attain
human rating rapidly & at low additional cost is
paramount
Note: Many human-rating requirements are
mandated on the cargo vehicle because it must be
safe for ISS crew
Space Exploration Technologies Corp
June 16, 2009
This is why SpaceX was founded
21
Dragon Already Designed to
Accommodate ISS Crew
•For COTS Capabilities A-C, astronauts will enter (and temporarily
inhabit) the Dragon spacecraft for loading and unloading of cargo to
and from the International Space Station
•Therefore, Dragon already meets the manned requirements to allow
this activity, as called out in SSP 50808
•Air sampling and circulation
•ISS crew sample Dragon’s air supply through the Air Revitalization
System (ARS) port before entering the spacecraft, breathing in the
air as provided by the Dragon Environmental Control System.
• Air circulation is provided to ensure safe breathability throughout the
spacecraft
•Temperature and humidity requirements
•Touch temperature limits: between 39 F and 113 F
•Human Factors
•Protection from shock
•Restrictions on sharp corners, sharp edges, exposed screw threads, burrs, and pinch points.
• All fonts, colors, and labels are consistent with SSP 50005.
Dragon is capable of docking and undocking, but for reasons, it is rather berthed via the Canadaarm.
Your third paragraph is not correct at all. Dragon has life support and reentry acceleration of 3.5g.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/2011001...
http://www.nasa.gov/pdf/361838main_11%20-%20SpaceX%20Augusti...
Quoting from the first pdf:
Environmental Control System
Astronauts will enter Dragon to remove cargo. Dragon’s cabin is habitable, with air circulation, lighting, fire detection and suppression, air temperature control, pressure and humidity monitoring.
Transporting Crew While it initially is transporting cargo, Dragon was designed from the beginning to transport crew and is currently undergoing modifications to make this possible. Crew configuration will include life support systems, a crew escape system, and onboard controls that allow the crew to take control from the flight computer when needed. This focus on commonality between cargo and crew configurations minimizes the design effort and simplifies the human-rating process, allowing systems critical to Dragon crew safety and ISS safety to be fully tested on unmanned flights.
And the second pdf:
Crew Capability
•Both Dragon & Falcon 9 were designed from inception to readily accommodate crew
•Immediate focus is on cargo for COTS & CRS commitments, BUT…
•In every design decision, the ability to attain human rating rapidly & at low additional cost is paramount Note: Many human-rating requirements are mandated on the cargo vehicle because it must be safe for ISS crew Space Exploration Technologies Corp June 16, 2009 This is why SpaceX was founded 21 Dragon Already Designed to Accommodate ISS Crew
•For COTS Capabilities A-C, astronauts will enter (and temporarily inhabit) the Dragon spacecraft for loading and unloading of cargo to and from the International Space Station
•Therefore, Dragon already meets the manned requirements to allow this activity, as called out in SSP 50808
•Air sampling and circulation
•ISS crew sample Dragon’s air supply through the Air Revitalization System (ARS) port before entering the spacecraft, breathing in the air as provided by the Dragon Environmental Control System.
• Air circulation is provided to ensure safe breathability throughout the spacecraft
•Temperature and humidity requirements
•Touch temperature limits: between 39 F and 113 F
•Human Factors
•Protection from shock
•Restrictions on sharp corners, sharp edges, exposed screw threads, burrs, and pinch points.
• All fonts, colors, and labels are consistent with SSP 50005.
Dragon is capable of docking and undocking, but for reasons, it is rather berthed via the Canadaarm.