Plug and Fly: Getting Electric Aviation Up In the Sky

Sonja Glavaski, PhD

Program Director

“If we all did the things we are capable of doing, we would literally astound ourselves.” - Thomas Edison

1Insert Presentation NameMarch 19, 2018

Small All-Electric Aircraft Are Here!

2Plug and Fly: Getting Electric Aviation Up In the SkyMarch 19, 2018

• 3 hours flight endurance

• 55-120 knots operation

• 260 Wh/kg, Li-Ion Battery

• 80 kW/20 kg electric motor

• 2 seats

Sun Flyer

Bye Aerospace

10x flight hour

cost reduction

Your Electric VTOL Ride Is On Its Way!

3Plug and Fly: Getting Electric Aviation Up In the SkyMarch 19, 2018

Joby S2 • ~ 2 hours flight endurance*

• 170 knots operation (projected)

• Li-Ion Battery

• 12 electric motors (10-18kW)

• Foldable propeller (take-off)

• 2 seats

On-Demand Mobility

*A.S. Stoll et al. Conceptual Design of The Joby S2 Electric VTOL PAV,

Aviation Tech. Integration, and Operation Conference, June 2014, Atlanta, GA

Can We Expand to Larger Aircraft?

4Plug and Fly: Getting Electric Aviation Up In the SkyMarch 19, 2018

Better Energy

Storage Specific

Energy

More

Efficient

Propulsion

Whole

System

Re-Design

www.siemens.com www.nasa.gov

5

“If we all worked on the assumption that what is

accepted as true is really true, there would be

little hope of advance.” - Orville Wright

0

20,000

40,000

60,000

80,000

SOA Electric* Electric**

Mass (

kg

)

Battery

Fuel

Engines

Structure

Cargo

Passengers& Crew

Why Can’t We Get There With Batteries Alone?

Plug and Fly: Getting Electric Aviation Up In the SkyMarch 19, 2018

MRJ7076 passengers

20,583

2,416

8,001

3,000

2,700

*w/ battery specific

energy (260 Wh/kg)

Replace fuel with batteries

and engines with electric motors

6

∞

1,990

3,690

We Need to Improve the Aircraft as a Whole!

Light-Weight

Electric Actuators

Innovative, Advanced

Light-Weight Materials

Propulsion Airframe

Integration

High Energy Storage

Specific Energy

Electric, High

Efficiency Distributed

Propulsion

Blended Wing Body

and High Aspect

Ratio Wings to

Improve L/D

0

20,000

40,000

MRJ70 Advanced Concept Radical Concept

Mass (

kg

)

Energy Storage

Fuel

Engines

Structure

Cargo

Passengers &Crew

A Few Redesign Options!

8Plug and Fly: Getting Electric Aviation Up In the SkyMarch 19, 2018

2,416

8,001

ESSE*: ~1550 Wh/kg

20,583 18,524

1,392

10,291

3,561

3,0001,990

2,700 5,756

ESSE*: ~ 1550 Wh/kg

Electric Blended Wing Body

+ 25% L/D,

- 10% structural weight

Push Further!

+ 20% L/D,

- 45% structural weight

*Energy Storage Specific Energy

500 Miles Flight

All phases + Reserves

76 passengers- 35% Energy

Consumption

9Plug and Fly: Getting Electric Aviation Up In the SkyMarch 19, 2018