File:330-PSA-26-61 (USN 1052544) (21453676362).jpg
_(21453676362).jpg){kind=small}
Size of this preview: 770 × 600 pixels. Other resolutions: 308 × 240 pixels | 617 × 480 pixels | 987 × 768 pixels | 1,280 × 997 pixels | 2,240 × 1,744 pixels.
Original file (2,240 × 1,744 pixels, file size: 2.41 MB, MIME type: image/jpeg)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description | 330-PSA-26-61 (USN 1052544): U.S. Navy’s Hot Air Balloon Completes Successful Test. U.S. Navy’s hot air balloon which uses the hot air principle for buoyancy completed a successful test flight in November 1960 over the Stratobowl balloon launching site, Rapid City, South Dakota, the 9,000 foot, 2-hour flight was made by Mr. P. Edward Yost, director and test pilot of the project. Mr. Yost made the flight while suspended in a swing seat with a backrest and both his feed resting on trapeze bar. Research on the hot air balloon system is being conducted Raven, under contract to the Office of Naval Research. Principle advantages of the hot air balloon are economy of operation, greater load capacity, and greater flexibility in ascending and descending without requiring the use of ballast. A large burner is used to accomplish initial inflation on the ground. A portable burner fed from propane gas tanks is carried inside the mouth of the balloon. Varying the burner flame controls the ascent and descent of the balloon. A high flame sends the balloon, or brings it down. The lower portion of the balloon is protected with glass cloth. Another advantage of the hot air system is the ease in preparing for launch. The entire process required 35 minutes in the test flight. The balloon presently being used in the experimental manner flights is made of nylon with a nylon plastic laminate. The balloon is about 40 feet in diameter, measures 27,000 cubic feet and can carry a maximum load of 600 pounds to 15,000 feet. It is reusable, and more flights will be made with the same balloon. Photograph released January 26, 1961. (9/15/15). |
| Date | |
| Source | 330-PSA-26-61 (USN 1052544) |
| Author | National Museum of the U.S. Navy |
Licensing
|
This image was originally posted to Flickr by Photograph Curator at https://flickr.com/photos/127906254@N06/21453676362 (archive). It was reviewed on 10 July 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the Public Domain Mark. |
|
This file is a work of a sailor or employee of the U.S. Navy, taken or made as part of that person's official duties. As a work of the U.S. federal government, it is in the public domain in the United States.
|
 |
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 05:19, 10 July 2018 | | 2,240 × 1,744 (2.41 MB) | Hiàn (alt) | Transferred from Flickr via #flickr2commons |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
_(21453676362).jpg){kind=link}