Abstract The crashworthiness of aviation is a significant aspect of airworthiness, because it helps a lot in keeping crew safety and reducing economic losses. For the purpose of improving the crashworthiness performance of a kind of general aviation-type helicopter, an innovative light-weight composite energy-absorbing component has been developed in this paper. This component consists of carbon fiber woven cylindrical thin-walled tube and external triggers. The triggers let the cylindrical thin-walled tube split and break along its longitudinal axis and the energy is absorbed at the same time. In order to verify the results, a serial of test components were made and several tests were carried on.
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Donald S. Lutz Indianapolis: Liberty Fund The text, complete and with the original spelling, is taken from Thorpe, Federal and State Constitutions, - Along with the Pilgrim Code of Law  and the Fundamental Articles of New Haven , this document is a candidate for being the earliest written constitution in America. It should be noted that this document, as well as the Pilgrim Code of Law, prominently displays oaths for officeholders as an essential part of the agreement, which underscores the importance of the other oaths for establishing government see, for example, documents 4, 9, 15, 16, 47, and .