By Michael C. Niu

The purpose of this e-book is to supply a primary knowing in skinny sheet development. The emphasis is on sensible program with enter from either fabric energy and hands-on adventure. a large amount of fabric at the sizing of metal airframe is gifted in tables, charts and/or curves which are in response to previous event and/or try out effects. step by step techniques are integrated each time attainable and examples of numerical calculation are integrated to explain both the tactic of sizing or using layout info and layout curves to offer engineers a real-world feeling of the way to accomplish the best buildings. The cautious choice of structural configurations and fabrics that are mixed to provide an financial layout whereas additionally contemplating the results of static, fatigue, fail-safe requisites, harm tolerance and reparability also are vital matters during this e-book.

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Extra resources for Airframe Stress Analysis and Sizing

Sample text

VM - One-half the max. vertical ground reaction obtained at each main gear in the level landing conditions * Nose gear ground reactions equal to zero. 5 Lateral Drifi Landing REBOUND LANDING: Since an aircraft may rebound into the air after a hard landing, the gear and its supporting structure must be checked out for this condition. With the landing gear fully extended and not in contact with the ground, a load factor of 20 must be applied to the unsprung weights of the gear. The load factor must act in the direction of Oleo movement.

1), landing gear (see Fig. , which must break away cleanly when striking an obstacle, ditching or any other emergencies occur. Inflight case On ground crash landing case (E) HAND LOADS (a) All stiffeners, whether mechanically fastened or cocured or bonded, are to be designed to one of the following three categories: Horizontal lower framing stiffeners around an access cutout - apply 300 Ibs. ultimate load over 4 inches Vertical and horizontal upper framing stiffeners around an access cutout - apply 150 Ibs.

This causes a high yawing acceleration The aircraft then yaws to a maximum side slip angle. This is a momentary dynamic overyaw condition With the aircraft settled down to a static side slip angle, the rudder is then returned to neutral (B) GUSTS SYMMETRICAL: (a) Flap-up case: Gust criteria are based upon the fact that turbulent conditions of varying intensity occur in the air through which the aircraft flies. g. position must be investigated for all critical points around the periphery of the gust V-n diagram as shown in Fig.

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Airframe Stress Analysis and Sizing by Michael C. Niu
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