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本帖最后由 choi 于 6-8-2025 10:26 编辑
Yesterday, I posted "Why It Took Hakuto-R months to Enter Moon Orbit." Today I add Note (d):
(d) Parrish NL et al, Ballistic Lunar Transfers to Near Rectilinear Halo Orbit: Operational Considerations. NASA, 2020
https://ntrs.nasa.gov/api/citati ... ads/20200011549.pdf
("Ballistic lunar transfers (BLTs) exist for a variety of 3-body orbits.13 In these transfer orbits, the Sun's gravity is used to raise perigee and adjust inclination. In order for the Sun's gravity to have a significant effect on the trajectory, the apogee must be approximately 1-2 million kilometers")
And in Note (2)(b)(ii) Wikipedia link
https://en.wikipedia.org/wiki/Low-energy_transfer
, the apogees of more than 1 million km are what are shown in these two animations (of low energy transfer) -- with SLIM's flight profile (several rounds around Earth before the low energy transfer closely resembling that of Hakuto-R.
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The following two are reviews by Mark Yost in the Saturday column "Shortcut" (because these are mini reviews) with the heading: Military History (to indicate the arena of books under review) -- ending up with "Shortcut: Military History").
(1) Death Behind the Lines
(book review on Tim Grady, Burying the Enemy; The story of those who cared for the dead in two World Wars. Yale University Press, 2025)
Note:
(a) behind enemy lines (idiom)
https://www.merriam-webster.com/dictionary/behind%20enemy%20lines
(b) "Becker's mother, Agathe"
Agatha (given name)
https://en.wikipedia.org/wiki/Agatha_(given_name)
is a feminine given name, as in Agatha Christie.
(c) University of Chester
https://en.wikipedia.org/wiki/University_of_Chester
(1839- ; public; located in Chester (county town of Cheshire, England) )
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IN A FOREST FIELD Wooden crosses marking graves of German airmenin Plymouth, England, as photographed in 1956. Volksbund Deutsche Kriegsgräberfürsorge Archive
Eduard Becker was a German airman shot down over Scotland in July 1941. After their bodies were recovered, he and his crew were given proper burials in a local cemetery. In 1954 Becker’s mother, Agathe, finally arrived to pick up her son’s remains. Upon discovering Becker’s grave “so well cared for and beautifully set out,” Agathe opted to leave him where he was, “reassured by the idea that her son’s presence . . . was helping to heal everything that ‘the war had destroyed.’”
Somewhere around 80 million people were killed during World War II, about half of them combatants. We know (mostly) what happened to those who perished on the battlefield, but what of those who died in enemy territory or in captivity?
As Tim Grady, a professor of modern European history at the University of Chester, writes in “Burying the Enemy,” Becker was among the approximately 4,500 Germans who died on British soil during World War II. For the most part these soldiers, sailors and airmen were treated with dignity, put into graves in the town cemetery and tended to with care. After all, Mr. Grady reminds us, there would have been local boys, perhaps shot down on similar bombing runs over Germany, who suffered the same fate.
As the Allied bombing campaign intensified over Nazi Germany, the German civilians became less and less sympathetic to the crewmen who landed in their gardens. Joseph Goebbels, the Nazi propagandist, exploited these feelings, saying it would be understandable if the “child murderers” were “beaten to death by a beleaguered public.” And they sometimes were.
Those who survived capture were sent to prisoner-of-war camps, where treatment varied. British and American prisoners held by the Axis powers were generally treated well. But the Nazis hated the Russians so much that they killed some 3.2 million Soviet prisoners.
World War I had been different. Given that the lines of the western front hardly moved and neither side used aircraft to bomb enemy territory in any significant way, most of the deaths beyond the battlefield “occurred behind the barbed wire of internment camps. Illness and disease, particularly the influenza pandemic of 1918-1919, were the biggest killers,” Mr. Grady tells us. Other deaths came from suicide by those “ground down by the monotony of life in captivity.”
Once the wars ended, former enemies struggled to cooperate in the task of repatriating the bodies. It often took years to work through the red tape on all sides. Families—and governments—persevered.
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