Presentation by Walt Janowski (J-2X Deputy Program Manager, Pratt & Whitney) at the Von Braun Memorial Symposium in Huntsville, Alabama, 21 October 2008.
<a href="http://astronautical.org/vonbraun/vonbraun-2008/session1">http://astronautical.org/vonbraun/vonbraun-2008/session1</a>
3. NASA’s Exploration Roadmap
05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
1st Human CEV Flight Lunar Outpost Buildup
7th Human
Robotic Precursors
Robotic Precursors Lunar Landing
Commercial Crew/Cargo for ISS
Commercial Crew/Cargo for ISS
Mars
Development
Space Shuttle
Space Shuttle
J-2X supports two missions
• CLV (underway now)
CEV Development
CEV Development • CaLV (starting in 2011)
Crew Launch Development
Crew Launch Development
Lunar Lander Development
Lunar Lander Development
Lunar Heavy Launch Development
Lunar Heavy Launch Development
Earth Departure Stage Development
Earth Departure Stage Development
Surface Systems Development
Surface Systems Development
2
Pratt & Whitney Rocketdyne
4. J-2 Engine Lineage
J-2X: Adding a new member to the family
1960-1970 1965-1971 1996-2001 2006-
Configuration J-2 J-2S X-33 J-2X
Thrust 230 klb 265 klb 261 klb 294 klb
Isp 425 sec 436 sec 419 sec 448 sec
Mass 3,492 lb 3,800 lb 7,500 lb 5,450 lb
Length 116 in 116 in 79 in 185 in
Requirements
3
Pratt & Whitney Rocketdyne
11. Program Summary
• Program team is fully enabled and engaged
• PWR on contract for $1.2B DDT&E effort
• Rely on heritage & flight proven technology
• Experienced design, fabrication, test team
• Program progress is on plan
• Design matured through Critical Design Review
• Significant risk mitigation testing contributing to design
• Early hardware fabrication initiated
J-2X :: Low Risk Propulsion for Exploration
J-2X Low Risk Propulsion for Exploration
10
Pratt & Whitney Rocketdyne