Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor | Faculty of Engineering | en_US |
| dc.creator | Chen, Rui | - |
| dc.identifier.uri | https://theses.lib.polyu.edu.hk/handle/200/8597 | - |
| dc.language | English | en_US |
| dc.publisher | Hong Kong Polytechnic University | - |
| dc.rights | All rights reserved | en_US |
| dc.title | The evolution of helicopters | en_US |
| dcterms.abstract | The constructal law tells us that all flow (inanimate, animate) systems are all evolving to some certain directions. For example, the airplane tends to be larger and larger. And the mass of animals' organ (heart, lung) is proportional to the body size. The birth of helicopter is not that far, about 60 years ago. However, it has developed a lot in size, architectures, engine and so on. Strong correlations emerge between dimensions and performances. Basically, larger means more efficient for rotor and engine. Besides, proportionalities are everywhere, engine size, body size and fuel load. In time arrow, engine efficiency obviously improved due to technology evolution. All these trends agree with the constructal law. | en_US |
| dcterms.extent | vii, 57 pages : color illustrations | en_US |
| dcterms.isPartOf | PolyU Electronic Theses | en_US |
| dcterms.issued | 2016 | en_US |
| dcterms.educationalLevel | All Master | en_US |
| dcterms.educationalLevel | M.Sc. | en_US |
| dcterms.LCSH | Hong Kong Polytechnic University -- Dissertations | en_US |
| dcterms.LCSH | Helicopters. | en_US |
| dcterms.LCSH | Helicopters -- Aerodynamics. | en_US |
| dcterms.LCSH | Helicopters -- Control systems. | en_US |
| dcterms.LCSH | Helicopters -- Electric equipment. | en_US |
| dcterms.accessRights | restricted access | en_US |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| b29170217.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 2.49 MB | Adobe PDF | View/Open |
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