Leeham News and Analysis
There's more to real news than a news release.
Leeham News and Analysis
- Bjorn’s Corner: Air Transport’s route to 2050. Part 25. June 6, 2025
- New RISE powerplant benefits from decades of GE research and development June 5, 2025
- Engine makers emphasizing durability, reliability June 4, 2025
- Boeing CEO: Lessons learned are key to certification of 737-7/10 and 777X June 2, 2025
- Digital twin is a key to JetZero’s hopes for Blended Wing Body entry June 2, 2025
Bjorn’s Corner: Do I get COVID in airline cabins? Part 7. Effects of prevention.
By Bjorn Fehrm
June 19, 2020, ©. Leeham News: In our Corner series about flying during the COVID-19 pandemic, we look at opening up traveling and how re-emerging infection clusters can be handled.
With a four-month pandemic history, several studies now detail what effects different prevention actions have. Once the general spreading of the virus is under control in a country, authorities can then use these tools to engage in point actions rather than general lockdowns.
Figure 1. The EU travel app. Source: European Union.
Bjorn’s Corner: Do I get COVID in airline cabins? Part 5. Risk of spread.
By Bjorn Fehrm
June 5, 2020, ©. Leeham News: In our Corner series about flying during the COVID-19 pandemic, we dig deeper into how the virus spreads.
In the last Corner, I wrote, “Recent research points to SARS-CoV-2 spreading over droplets rather than aerosols.” I later modified it to “spreading more over droplets than aerosols.”
Let’s dig into what I tried to say and why I changed the sentence.
Figure 1. The spreading of droplets when coughing.
Bjorn’s Corner: Do I get COVID in airline cabins? Part 4.
By Bjorn Fehrm
May 29, 2020, ©. Leeham News: In our Corner series about flying during the COVID-19 pandemic, we go deeper into the cabin airflow and procedures around the flight.
The riskiest phase of the flight is not when you sit down. The cabin airflow then transports the viruses away from your breathing. It’s the phases before and after the flight that are the danger zones.
Figure 1. The airflow in a passenger jet. Source: Leeham Co.
Bjorn’s Corner: Do I get COVID in airline cabins? Part 3.
May 22, 2020, ©. Leeham News: In our Corner series about flying during the COVID-19 pandemic, we look closer at the available research around passengers that fly with virus infections and if these spread to other passengers during a flight.
How much do we know and what are guesses?
Figure 1.
Bjorn’s Corner: Do I get COVID in airline cabins? Part 2.
May 15, 2020, ©. Leeham News: In our Corner series about flying during the COVID-19 pandemic, we dig deeper into the knowledge around when a person is infectious and what to do about it in a air travel setting.
Figure 1. Droplet cloud when coughing.
Bjorn’s Corner: Can I get COVID-19 in airline cabins? Part 1.
May 8, 2020, ©. Leeham News: In our Corner series, we now dig into this important subject: Is my probability of getting infected with the COVID-19 virus higher in an airliner cabin than in other places?
We look at simulations of how the virus travels when we breathe/cough and how the virus load propagates in an airliner cabin. Then we talk about infection probabilities compared with other environments.
Figure 1.
Bjorn’s Corner: Why e in ePlane shall stand for environment, Part 19. ICAO CORSIA.
April 24, 2020, ©. Leeham News: Before we wrap the series about technologies that can help us reduce the environmental footprint of air transport, we describe what the ICAO emissions scheme CORSIA is, its goals, and comment on its importance.
Figure 1. The world’s CO2 emissions increased at a fast pace until today. Source: Wikipedia.
Bjorn’s Corner: Why e in ePlane shall stand for environment, Part 18. Low hanging fruit.
April 17, 2020, ©. Leeham News: We continue the summary of the series why e in ePlane should be more about environment focus than electric aircraft.
Last week we summarized the high hanging fruit technologies pursued presently, now we continue with the low hanging fruit.
Figure 1. The Gartner hype curve. Source: Wikipedia.
Bjorn’s Corner: Why e in ePlane shall stand for environment, Part 17. High hanging fruit.
April 10, 2020, ©. Leeham News: We have since December 13, discussed why e in ePlane should not stand for electric and covered a lot of areas explaining why electric aircraft or hybrids are not the best way to environmentally friendly air transport.
We now recap what we learned and then wrap the series.
Figure 1. The Gartner hype cycle. Source: Wikipedia.
Bjorn’s Corner: Why e in ePlane shall stand for environment, Part 16. Bio fuels.
April 3, 2020, ©. Leeham News: In this week’s Corner, we go deeper into bio-based carbon-neutral fuels. We described the two variants of bio-based and synthetic alternative fuels last week and gave an overview of the pros and cons of synthetic fuel.
Now we dig deeper into bio-based airliner jet fuels, an already existing carbon-neutral fuel type.
Figure 1. United is using biofuel for its operations from LAX. Source: United Airlines.