SKU: 8775922812

Helicopter Theory

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Description

Helicopter TheoryThe history of the helicopter may be traced back to the Chinese flying top (c. 400 B. C.) and to the work of Leonardo da Vinci, who sketched designs for a vertical flight machine utilizing a screw type propeller. In the late nineteenth century, Thomas Edison experimented with helicopter models, realizing that no such machine would be able to fly until the development of a sufficiently lightweight engine. When the internal combustion gasoline engine

The history of the helicopter may be traced back to the Chinese flying top (c. 400 B.C.) and to the work of Leonardo da Vinci, who sketched designs for a vertical flight machine utilizing a screw-type propeller. In the late nineteenth century, Thomas Edison experimented with helicopter models, realizing that no such machine would be able to fly until the development of a sufficiently lightweight engine. When the internal combustion gasoline engine came on the scene around 1900, the stage was set for the real development of helicopter technology.
While this text provides a concise history of helicopter development, its true purpose is to provide the engineering analysis required to design a highly successful rotorcraft. Toward that end the book offers thorough, comprehensive coverage of the theory of helicopter flight: the elements of vertical flight, forward flight, performance, design, mathematics of rotating systems, rotary wing dynamics and aerodynamics, aeroelasticity, stability and control, stall, noise and more.
Wayne Johnson has worked for the U.S. Army and NASA at the Ames Research Center in California. Through his company Johnson Aeronautics, he is engaged in the development of software that is used throughout the world for the analysis of rotorcraft. In this book, Dr. Johnson has compiled a monumental resource that is essential reading for any student or aeronautical engineer interested in the design and development of vertical-flight aircraft.



Binding Type: Paperback
Publisher: Dover Publications
Published: 10/06/1994
ISBN: 9780486682303
Pages: 1120
Weight: 2.44lbs
Size: 8.22h x 5.62w x 2.00d
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SKU: 8775922812

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4.8 ★★★★★
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Lisa J
Boise, US
★★★★★ 4
Squeaker short-lived, enjoyment long-lasting
Size: Large, Color: 5 Pack
My 10-pound dorkie rips out the squeakers in about 30 minutes. I wish they were sturdier or the parts of the toy housing the squeaker were reinforced. However, he is so excited to get a new one and will continue to play with it even when the squeaker is out. He loves to play tug. They do get pretty gross from the chewing and definitely benefit from a trip through the washer. While this is not a very sturdy toy it provides so much entertainment I had to give it four stars.
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Reviewed in the United States on March 31, 2026
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Deborah
Draper, US
★★★★★ 5
Pups are happy!
Size: Large, Color: 5 Pack
Our dogs love these toys! What a great find! We will be buying different ones.
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Reviewed in the United States on June 7, 2026
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Steve Hall
San Leandro, US
★★★★★ 5
Husky Approved
Size: Large, Color: 5 Pack
Okay, so my husky, bless his cotton socks, thinks he's a furry little demolition crew. Usually, plush toys last about five minutes before they're disemboweled, leaving a fluffy white crime scene all over my living room. BUT! These Sharlovy toys are a game changer! They're stuffing-free, which is a HUGE win for my sanity (and my vacuum cleaner). He can happily gnaw away, trying to get to that squeaker (and succeeding, eventually, because, husky), but without the usual explosion of fluff. Five stars for saving me from a lifetime of stuffing-related stress. If you have a chewer, give these a try. Your house (and your head) will thank you.
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Reviewed in the United States on May 21, 2026
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ELJ
Alexandria, US
★★★★★ 3
not durable.
Size: Large, Color: 5 Pack
My dog devoured these in 60 seconds - completely shredded
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Reviewed in the United States on April 8, 2026
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Amy Fulgham
Birmingham, US
★★★★★ 5
No Mess, Lots of Fun!
Size: Large, Color: 5 Pack
My dog absolutely loves these toys! The squeakers and crinkle sounds keep him entertained for hours, and I appreciate that they have no stuffing—so no messy cleanup when he plays a little rough. The variety pack is great because it gives him different animals to choose from, and the toys are surprisingly durable even with lots of chewing. They’re lightweight, easy for him to carry around, and perfect for playtime or keeping him busy when I’m working. Definitely a great value for the price, and I’ll be buying again when he wears them out. Highly recommend!
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Reviewed in the United States on August 21, 2025

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