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Download PDF by Norman S. Currey: Aircraft Landing Gear Design: Principles and Practices (AIAA

By Norman S. Currey

This can be the single booklet to be had at the present time that covers army and advertisement airplane touchdown equipment layout. it's a finished textual content that may lead scholars and engineers from the preliminary techniques of touchdown apparatus layout via ultimate aspect layout. The e-book offers an important hyperlink in touchdown apparatus layout know-how from historic practices to fashionable layout developments, and it considers the mandatory airfield interface with touchdown equipment layout. The textual content is sponsored up by means of calculations, requisites, references, operating examples.

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Example text

S. Navy requirements are peculiar and these are noted; also British requirements are slightly different in some areas and these too are highlighted. Although it is sometimes necessary for cost, weight, and schedule reasons to meet only the requirements of the first customer, it is often beneficial to design the aircraft to meet other customers' requirements and/or international requirements. This allows follow-on sales of a commerical vehicle, for instance, or a derivative of it to military customers or to foreign countries.

5 GAS/OIL SHOCK ABSORBERS Since shock absorbers arc usually the most complex part of the landing gear, substantial detail is included in this section. Much of this information is based on specifications developed cooperatively by industry, government, and various engineering societies (see Chapters I and 15). The word "shall" is used in such specifications to denote a definite requirement and is thus repeated here. Shock absorbers shall be designed to meet the requirements of MIL-L8552 and shall be drop tested in accordance with MIL-T-6053 (USAF and USN).

This is illustrated in Fig. 9. Figure 3. I0 depicts a method that was used by the author some years ago on a design that did not proceed beyond the study stage. The gear is suspended from the rear spar of a high wing and retracts forward into a streamlined pod. 3 Turnover Angles Aircraft Low-wing transports Lockheed Electra Boeing 747 A-300B Lockheed LI011 Mercure Boeing 737-200 Concorde DC-9o I 0 Boeing 707-320B Boeing 727-200 Fighters F-4E F- 104G Turnover angle, deg Aircraft Turnover angle, deg High-wing transports DHC Buffalo Lockheed C-141A Breguet 941 Lockheed LI00-20 Fregat Other Aero Commander Piper Turbo Navajo Beech B99 Piper Comanche Beech U-21A Bonanza Piper Super Cub 34 39 41 43 44 46 47 48 49 49 39 36 37 53 6I 61 63 38 43 44 45 47 5I 59 Note: The above values were calculated by the author and may vary somewhat from manufacturers' calculations due to differences in assumed critical center-of-gravity positions.

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Aircraft Landing Gear Design: Principles and Practices (AIAA Education Series) by Norman S. Currey


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