Leeham News and Analysis
There's more to real news than a news release.
Leeham News and Analysis
- FAA’s data of accident, incidents, often not shared May 19, 2025
- Bjorn’s Corner: Air Transport’s route to 2050. Part 22. May 16, 2025
- Services are driving revenues and profits in difficult times, Part I May 15, 2025
- The BWB has a long way to go before flying passengers, freight May 12, 2025
- Bjorn’s Corner: Air Transport’s route to 2050. Part 21. May 9, 2025
Bjorn’s Corner: Electric aircraft, Part 13
September 22, 2017, ©. Leeham Co: After 12 articles about electric aircraft, it’s time to wrap up. We will go through what we have learned and discuss future developments. Our designs were aimed for the next decade and the… Read More
Bjorn’s Corner: Electric aircraft, Part 12
September 15, 2017, ©. Leeham Co: Last week we compared the energy economics of our 10-seater electric commuter to an equivalent commuter with gas turbine power. Now we dig a bit deeper in the operational costs of the two… Read More
Bjorn’s Corner: Electric aircraft, Part 11
September 8, 2017, ©. Leeham Co: After our definition of an-all electric 10-seater for Ultra short-haul flying in last Corner, we now compare its economics to a gas turbine propelled design. Our designs have the Zunum Aero 10-seater commuter… Read More
Bjorn’s Corner: Electric aircraft, Part 10
September 1, 2017, ©. Leeham Co: in the nine previous Corners, we looked at 50-seat regional jets and turboprops with hybrid electric propulsion systems. We have seen that at the state of technology until the mid-next decade, such aircraft… Read More
Bjorn’s Corner: Electric aircraft, Part 9
August 25, 2017, ©. Leeham Co: We finished the weight sizing of the hybrid propulsion system for our 50-seat regional turboprop in the last Corner. Now we go a bit more into detail. There are additional parts needed in… Read More
Bjorn’s Corner: Electric aircraft, Part 7
August 11, 2017, ©. Leeham Co: In this Corner, we will design the hybrid propulsion system for our 50-seat regional turboprop. We could see in previous Corners that we can’t use batteries as a backup for our gas turbine… Read More
Bjorn’s Corner: Electric aircraft, Part 6
August 03, 2017, ©. Leeham Co: In our search for an electric regional aircraft configuration, we found that a jet aircraft requires too high power levels. The higher speeds of a jet aircraft take the power levels beyond what… Read More
Bjorn’s Corner: Electric aircraft, Part 5
July 28, 2017, ©. Leeham Co: In the last Corner, we looked at the mass of the propulsion components for a regional airliner. Now we complete the mass estimations for the complete hybrid electric system. We do that for… Read More
Bjorn’s Corner: Electric aircraft, Part 1
June 30, 2017, ©. Leeham Co: One of the areas I explored while at Paris Air Show last week was electric aircraft technology. With electric aircraft, we mean an aircraft where the propeller/fan is driven my an electrical motor…. Read More