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Description
Facing the Heat Barrier: A History of HypersonicsThis volume from The NASA History Series presents an overview of the science of hypersonics, the study of flight at speeds at which the physics of flows is dominated by aerodynamic heating. The survey begins during the years immediately following World War II, with the first steps in hypersonic research: the development of missile nose cones and the X 15; the earliest concepts of hypersonic propulsion; and the origin of the scramjet engine. Next, it
This volume from The NASA History Series presents an overview of the science of hypersonics, the study of flight at speeds at which the physics of flows is dominated by aerodynamic heating. The survey begins during the years immediately following World War II, with the first steps in hypersonic research: the development of missile nose cones and the X-15; the earliest concepts of hypersonic propulsion; and the origin of the scramjet engine. Next, it addresses the re-entry problem, which came to the forefront during the mid-1950s, showing how work in this area supported the manned space program and contributed to the development of the orbital shuttle.Subsequent chapters explore the fading of scramjet studies and the rise of the National Aerospace Plane (NASP) program of 1985-95, which sought to lay groundwork for single-stage vehicles. The program's ultimate shortcomings -- in terms of aerodynamics, propulsion, and materials -- are discussed, and the book concludes with a look at hypersonics in the post-NASP era, including the development of the X-33 and X-34 launch vehicles, further uses for scramjets, and advances in fluid mechanics. Clearly, ongoing research in hypersonics has yet to reach its full potential, and readers with an interest in aeronautics and astronautics will find this book a fascinating exploration of the field's history and future.
Binding Type: Paperback
Publisher: Dover Publications
Published: 09/12/2018
ISBN: 9780486827636
Pages: 352
Weight: 1.36lbs
Size: 9.20h x 6.10w x 1.00d
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Cleared up my flaky skin problem, helps keeps my facial skin soft year round
Size: 1.3 Ounce (Pack of 1)
I bought this full-size tube of Avene Hydrance Optimale Rich Hydrating Cream after falling in love with a small sample tube that came in a subscription box. At the time I received the sample, I was battling an unusual case of dry flaky skin that was embarrassing. Within a few days of regular use, my skin looked like new. Soft and clear. The tiny sample lasted a long time, so I didn't hesitate to buy the full-size tube even at this price. I use this every morning and night after cleansing my face. My skin stays soft, even with the dry winter skin and drying indoor heat. My makeup glides on smoothly. This is my go-to moisturizer year round now.
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Reviewed in the United States on February 26, 2018
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Avene RICH face cream
Size: 1.3 Ounce (Pack of 1)
This is a good product that was recommended by my Dermatologist. As written in a previous review, I prefer the LIGHT product. This is very good but too heavy for my face.
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Reviewed in the United States on January 18, 2026
★★★★★ 5
So hydrating! ******
Size: 1.3 Ounce (Pack of 1)
Small tube, but this is an amazing moisturizer. It is quite rich feeling yet feels light when applied. I’m confused that some other reviews mentioned a strong smell. I don’t smell anything really- maybe just an extremely light & clean scent.
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Reviewed in the United States on March 24, 2025
★★★★★ 5
Very good brand
Size: 1.3 Ounce (Pack of 1)
Nice quality, is good for sensitive skin, I use it every night before sleep, the prize is good though is cheaper in my local farmacy, the size is average, the skin absorbs it pretty good, and is very lightweight.
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Reviewed in the United States on October 29, 2024
★★★★★ 3
Incredibly hydrating but unbearable scent.
Size: 1.3 Ounce (Pack of 1)
I love all Avène skin barrier creams, recovery lotions and i just purchased this "Hydrance" cream. Texture is nice, it's unbelievably hydrating but the scent is overwhelming. It caused me a headache. So I decided to return it. Then I thought I'll give it another try and Oh my.... For the love of God, remove that awful scent. The reason I love Avène product is because theyre unscented, except this one I guess :/
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Reviewed in the United States on January 9, 2026