TABLE B-1 Prioritization of R&T Challenges for Area B: Propulsion and Power

 

 

 

Strategic Objective

National Priority

Why NASA?

NASA Priority Score

 

 

 

Capacity

Safety and Reliability

Efficiency and Performance

Energy and the Environment

Synergies with Security

Support to Space

Supporting Infrastructure

Mission Alignment

Lack of Alternative Sponsors

Appropriate Level of Risk

Why NASA Composite Score

R&T Challenge

Weight

5

3

1

1/4 each

B1a

Quiet propulsion systems

9

1

3

9

3

1

90

3

9

3

9

6.0

540

B1b

Ultraclean gas turbine combustors to reduce gaseous and particulate emissions in all flight segments

9

1

3

9

3

1

90

3

9

3

9

6.0

540

B3

Intelligent engines and mechanical power systems capable of self-diagnosis and reconfiguration between shop visits

3

9

3

3

3

1

82

3

9

3

9

6.0

492

B4

Improved propulsion system fuel economy

3

1

9

9

3

1

78

3

9

3

9

6.0

468

B5

Propulsion systems for short takeoff and vertical lift

9

1

3

3

3

1

72

3

9

3

9

6.0

432

B6a

Variable-cycle engines to expand the operating envelope

3

1

9

3

3

9

68

3

9

3

9

6.0

408

B6b

Integrated power and thermal management systems

3

1

9

3

3

9

68

3

9

3

9

6.0

408

B8

Propulsion systems for supersonic flight

3

1

3

1

9

9

50

9

9

3

9

7.5

375

B9

High-reliability, high-performance, and high-power-density aircraft electric power systems

1

3

9

3

3

3

62

1

9

3

9

5.5

341

B10

Combined-cycle hypersonic propulsion systems with mode transition

1

1

3

1

9

9

40

9

9

3

9

7.5

300

B11

Alternative fuels and additives for propulsion that could broaden fuel sources and/or lessen environmental impact

3

1

3

9

3

1

60

3

3

3

9

4.5

270

B12

Hypersonic hydrocarbon-fueled scramjet

1

1

3

1

9

9

40

9

3

3

9

6.0

240

B13

Improved propulsion system tolerance to weather, inlet distortion, wake ingestion, bird strike, and foreign object damage

3

9

3

1

3

1

76

3

3

3

3

3.0

228

B14

Propulsion approaches employing specific planetary atmospheres in thrust-producing chemical reactions

1

1

1

1

1

9

26

3

9

9

9

7.5

195

B15

Environmentally benign propulsion systems, structural components, and chemicals

1

1

1

9

3

1

44

3

3

3

3

3.0

132

B16

Reduced engine manufacturing and maintenance costs

3

3

3

3

3

1

52

3

1

1

3

2.0

104



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