Home Page >  News List >> Tech >> Tech

29000 kilometers to repair 1500 lighthouses, planes cannot be seen clearly at night, and American style infrastructure is done as soon as it is said

Tech 2023-07-24 22:52:04 Source: Network
AD

Today, it is difficult for us to imagine what efforts humans have made in history to sail far.In the early 1920s, the State Post Bureau of the United States faced a very difficult problem

Today, it is difficult for us to imagine what efforts humans have made in history to sail far.

In the early 1920s, the State Post Bureau of the United States faced a very difficult problem. That is the postal route spanning the east and west coasts of the United States, which has very poor direct flight safety and frequent flight accidents. The main cause of flight accidents is,Lost in the Air.

(1924, American Airmail route)

.

Although a compass can be installed on an aircraft, it is still in progressAerial survey navigation...

To solve such a problem, the pilot adopted a more primitive approach...

(Ford 5-AT stops on the airport runway and opens the cargo door)

.

....

(Loading and unloading parcels)

.

...

.

(Lighthouses were once an indispensable practical part of the global maritime navigation system and an important witness to human marine civilization)

.16606101.

60...

.

1923.1019331500.18000.

..

..

10..

.20..

...

20..1933.

30.1973.

301500.

.


Disclaimer: The content of this article is sourced from the internet. The copyright of the text, images, and other materials belongs to the original author. The platform reprints the materials for the purpose of conveying more information. The content of the article is for reference and learning only, and should not be used for commercial purposes. If it infringes on your legitimate rights and interests, please contact us promptly and we will handle it as soon as possible! We respect copyright and are committed to protecting it. Thank you for sharing.(Email:[email protected])

Mobile advertising space rental

Tag: is as 29000 kilometers to repair 1500 lighthouses planes

Guess you like

Unite directoryCopyright @ 2011-2025 All Rights Reserved. Copyright Webmaster Search Directory System