Architectural performance assessment of an electric vertical take-off and landing (e-VTOL) aircraft based on a vectored thrust concept
by P. Nathen a
a Lilium GmbH, Claude-Dornier Straße 1, 82234 Wessling, Germany
by P. Nathen a
a Lilium GmbH, Claude-Dornier Straße 1, 82234 Wessling, Germany
But few of the human race die of old age. Besides the thousand and one diseases flesh is heir to, and the disease which Mrs. O'Flannagan said her husband died of, viz., "Of a Saturday 'tis that poor Mike died," very many die of disappointment. More _fret_ out. Mr. Beecher said, "It is the fretting that wears out the machinery; friction, not the real wear."
"Choked with passion" is no chimera; for passion often kills the unfortunate possessor of an irritable temper, sometimes suddenly. Care and over-anxiety sweep away thousands annually.
Let us see how long a man should live. The horse lives twenty-five years; the ox fifteen or twenty; the lion about twenty; the dog ten or twelve; the rabbit eight; the guinea-pig six or seven years. These numbers all bear a similar proportion to the time the animal takes to grow to its full size. But man, of all animals, is the one that seldom comes up to his average. He ought to live a hundred years, according to this physiological law, for five times twenty are one hundred; but instead of that, he scarcely reaches, on the average, four times his growing period; the cat six times; and the rabbit even eight times the standard of measurement. The reason is obvious. Man is not only the most irregular and the most intemperate, but the most laborious and hard-worked of all animals. He is also the most irritable of all animals; and there is reason to believe, though we cannot tell what an animal secretly feels, that, more than any other animal, man cherishes wrath to keep it warm, and consumes himself with the fire of his secret reflections.
"Age dims the lustre of the eye, and pales the roses on beauty's cheek; while crows' feet, and furrows, and wrinkles, and lost teeth, and gray hairs, and bald head, and tottering limbs, and limping, most sadly mar the human form divine. But dim as the eye is, pallid and sunken as may be the face of beauty, and frail and feeble that once strong, erect, and manly body, the immortal soul, just fledging its wings for its home in heaven, may look out through those faded windows as beautiful as the dewdrop of summer's morning, as melting as the tears that glisten in affection's eye, by growing kindly, by cultivating sympathy with all human kind, by cherishing forbearance towards the follies and foibles of our race, and feeding, day by day, on that love to God and man which lifts us from the brute, and makes us akin to angels."
"Age dims the lustre of the eye, and pales the roses on beauty's cheek; while crows' feet, and furrows, and wrinkles, and lost teeth, and gray hairs, and bald head, and tottering limbs, and limping, most sadly mar the human form divine. But dim as the eye is, pallid and sunken as may be the face of beauty, and frail and feeble that once strong, erect, and manly body, the immortal soul, just fledging its wings for its home in heaven, may look out through those faded windows as beautiful as the dewdrop of summer's morning, as melting as the tears that glisten in affection's eye, by growing kindly, by cultivating sympathy with all human kind, by cherishing forbearance towards the follies and foibles of our race, and feeding, day by day, on that love to God and man which lifts us from the brute, and makes us akin to angels."
From "The Funny Side of Physic" by A. D. Crabtre
The origin of the honeymoon is not generally known.
The Saxons long and long ago got up the delightful occasion. Amongst the ancient Saxons and Teutons a beverage was made of honey and water, and sometimes flavored with mulberries. This drink was used especially at weddings and the after festivals. These festivals were kept up among the nobility sometimes for a month--"monath." The "hunig monath" was thus established, and the next moon after the marriage was called the honeymoon.
Alaric, about the fifth century king of the Saxons and Western Goths, is said to have actually died on his wedding night from drinking too freely of the honeyed beverage,--at least he died before morning,--and it certainly would seem to be a charitable inference to draw, since he partook very deeply of the "festive drink." It was certainly a sweet oblivion, "yet it should be a warning to posterity, as showing that even bridegrooms may make too merry."
Dr. Blanchet recently read a paper before the Academy of Science, Paris, relative to some cases of "long sleep," or lethargic slumber. One of them related to a lady twenty years of age, who took a sleeping fit during her _honeymoon_, which lasted fifty days.
"During this long period a false front tooth had to be taken out in order to introduce milk and broth into her mouth. This was her only food; she remained motionless, insensible, and all her muscles were in a state of contraction. Her pulse was low, her breathing scarcely perceptible; there was no evacuation, no leanness; her complexion was florid and healthy. The other cases were exactly similar. Dr. Blanchet is of opinion that in such cases no stimulants or forced motion ought to be employed.
"The report did not say whether the husband was pleased or not with her long silence."
There is too much talk in the world about woman's "_jaw_." As for me, give me the woman who can _talk_; the faster and more sense the better.
"Age dims the lustre of the eye, and pales the roses on beauty's cheek; while crows' feet, and furrows, and wrinkles, and lost teeth, and gray hairs, and bald head, and tottering limbs, and limping, most sadly mar the human form divine. But dim as the eye is, pallid and sunken as may be the face of beauty, and frail and feeble that once strong, erect, and manly body, the immortal soul, just fledging its wings for its home in heaven, may look out through those faded windows as beautiful as the dewdrop of summer's morning, as melting as the tears that glisten in affection's eye, by growing kindly, by cultivating sympathy with all human kind, by cherishing forbearance towards the follies and foibles of our race, and feeding, day by day, on that love to God and man which lifts us from the brute, and makes us akin to angels."
From "The Funny Side of Physic" by A. D. Crabtre
Several kings and great lords are made mention of as being particularly fond of using the lancet. Peter the Great of Russia was remarkably fond of witnessing dissections and surgical operations. He even used to carry a case of instruments in his pocket. He often visited the hospitals to witness capital operations, at times assisting in person, and was able to dissect properly, to bleed a patient, and extract a tooth as well as one of the faculty.
The pretty wife of one of the czar's valets had the following unpleasant experience of his skill. The husband of the "maid" accused her of flirting, and vowed revenge. The czar noticed the valet seated in the ante-room, looking forlorn, and asked the cause of his dejection. The wicked valet replied that his wife had a tooth which gave her great pain, keeping them both awake day and night, but would not have it drawn.
"Send her to me," said the czar.
The woman was brought, but persisted in affirming that her teeth were sound, and never ached. The valet alleged that this was always the way she did when the physician was called; therefore, in spite of her cries and remonstrances, the king ordered her husband to hold her head between his knees, when the czar drew out his instruments and instantly extracted the tooth designated by the husband, disregarding the cries of the unfortunate victim.
In a few days the czar was informed that the thing was a put-up job by the jealous husband, in order to punish, if not mar the beauty of, his gallant wife, whereupon the instruments were again brought into requisition; and this time the naughty valet was the sufferer, to the extent of losing a sound and valuable tooth.
From "The Funny Side of Physic" by A. D. Crabtre
From that excellent work, "Scenes in the Practice of a New York Surgeon," by Dr. E. H. Dixon, I copy, with some abbreviation, the following, which the author terms "Leaves from the Log-book of an Unfledged Æsculapian:"--
"In the year 1830 I was sent forth, like our long-suffering and much-abused prototype,--old father Noah's crow,--from the ark of safety, the old St. Duane Street College. I pitched my tent, and set up my trap, in what was then a fashionable up-town street.
"I hired a modest house, and had my arm-chair, my midnight couch, and my few books in my melancholy little office, and I confess that I now and then left an amputating-knife, or some other awful-looking instrument, on the table, to impress the poor women who came to me for advice.
"These little matters, although the 'Academy' would frown upon them, I considered quite pardonable. God knows I would willingly have adopted their most approved method of a splendid residence, and silver-mounted harnesses for my bays; but they were yet in dream-land, eating moonbeams, and my vicious little nag had nearly all this time to eat his oats and nurse his bad temper in his comfortable stable.
"In this miserable way I read over my old books, watered my rose-bushes,--sometimes with tears,--drank my tea and ate my toast, and occasionally listened to the complaint of an unfortunate Irish damsel, with her customary account of 'a pain in me side an' a flutterin' about me heart.' At rare intervals I ministered to some of her countrywomen in their fulfilment of the great command when placed in the Garden of Eden. (What a dirty place it would have been if inhabited by Irish women!)
"And thus I spent nearly a year without a single call to any person of character. I think I should have left in despair if it had not been for a lovely creature up the street. She was the wife of a distinguished fish merchant down town.
"This lovely woman was Mrs. Mackerel. I will explain how it was that I was summoned to her ladyship's mansion, and had the pleasure of seeing Mr. Mackerel, of the firm of 'Mackerel, Haddock & Dun.'
"One bitter cold night in January, just as I was about to retire, a furious ring at the front door made me feel particularly amiable! A servant announced the sudden and alarming illness of Mrs. Mackerel, with the assurance that as the family physician was out of town, Mrs. M. would be obliged if I would immediately visit her. Accordingly, I soon found myself in the presence of the accomplished lady, having--I confess it--given my hair an extra touch as I entered the beautiful chamber.
From "The Funny Side of Physic" by A. D. Crabtre
Several kings and great lords are made mention of as being particularly fond of using the lancet. Peter the Great of Russia was remarkably fond of witnessing dissections and surgical operations. He even used to carry a case of instruments in his pocket. He often visited the hospitals to witness capital operations, at times assisting in person, and was able to dissect properly, to bleed a patient, and extract a tooth as well as one of the faculty.
"Send her to me," said the czar.
In a few days the czar was informed that the thing was a put-up job by the jealous husband, in order to punish, if not mar the beauty of, his gallant wife, whereupon the instruments were again brought into requisition; and this time the naughty valet was the sufferer, to the extent of losing a sound and valuable tooth.
From "The Funny Side of Physic" by A. D. Crabtre
Several kings and great lords are made mention of as being particularly fond of using the lancet. Peter the Great of Russia was remarkably fond of witnessing dissections and surgical operations. He even used to carry a case of instruments in his pocket. He often visited the hospitals to witness capital operations, at times assisting in person, and was able to dissect properly, to bleed a patient, and extract a tooth as well as one of the faculty.
"Send her to me," said the czar.
In a few days the czar was informed that the thing was a put-up job by the jealous husband, in order to punish, if not mar the beauty of, his gallant wife, whereupon the instruments were again brought into requisition; and this time the naughty valet was the sufferer, to the extent of losing a sound and valuable tooth.
From "The Funny Side of Physic" by A. D. Crabtre
[1] Air mobility bonanza beckons electric vtol developers. / Accessed: 2010-09-30.
[2] Uam market potential, 2016.
[3] Special condition for small-category vtol aircraft, 2019.
[4] Air mobility bonanza beckons electric vtol developers. / Accessed: 2010-09-30.
[5] Uam market potential, 2016.
[6] Special condition for small-category vtol aircraft, 2019.
[7] Air mobility bonanza beckons electric vtol developers. / Accessed: 2010-09-30.
[8] Uam market potential, 2016.
[9] Special condition for small-category vtol aircraft, 2019.