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 4

July 21, 2017, ©. Leeham Co: In this Corner, we will start looking at the mass of the different components in a hybrid electric propulsion system compared with a classical turbofan propulsion. Our propulsion project is for a regional… Read More

Bjorn’s Corner: Electric aircraft, Part 3

July 14, 2017, ©. Leeham Co: In the last Corner, we developed a hybrid aircraft propulsion system and looked at system efficiencies. Today, we look a bit deeper at how hybrid propulsion can be implemented on an aircraft. What… Read More

Bjorn’s Corner: Electric aircraft, Part 2

July 07, 2017, ©. Leeham Co: In last Corner we could see that battery driven electric aircraft will be for the extreme short-haul. The stored energy per kg battery is 70 times lower than for fuel. In addition the… Read More

Bjorn’s Corner: Electric aircraft

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

Bjorn’s Corner: Why Electric Cars work and Airliners don’t

June 7, 2019, ©. Leeham News: In last week’s Corner I wrote: “The reason electric cars work and airliners don’t is the Sky lacks Stoplights“. The discussion was part of my previous series on Electric aircraft, but it… Read More

Green aircraft builder may need infusion of greenbacks

The full article requires a Paid Subscription and LogIn. If you are are Paid Subscriber, please Log In with your User Name and ID. If you wish to become a Paid Subscriber, please go to our Sign-Up page.

Canada’s Harbour Air to fit electric engines on its plane

The full article requires a Paid Subscription and LogIn. If you are are Paid Subscriber, please Log In with your User Name and ID. If you wish to become a Paid Subscriber, please go to our Sign-Up page.

Bjorn’s Corner: Aircraft drag reduction, Part 21

March 16, 2018, ©. Leeham News: In the last Corner, we looked at the drag of an airliner during cruise. We could see the thrust required to counter the drag in the thin air of 37,000 feet was low,… Read More

Airbus, Rolls-Royce and Siemens develops Hybrid-Electric demonstrator

By Bjorn Fehrm November 29, 2017, © Leeham Co.: Airbus, Rolls-Royce and Siemens yesterday announced they will fly a hybrid-electric demonstrator by 2020, E-Fan X (Figure 1). The aircraft, a BAe 146 four engine regional jet, will have… Read More