The Bulletin of the Experimental Department, Airplane Engineering Division Volume N . 1

The Bulletin of the Experimental Department, Airplane Engineering Division Volume N . 1

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1918 edition. Excerpt: ...and the personal element that enters into Fig. 12--1, 2 and 3. Cam roller, pin and bushing of cylinder No. 6 of engine 801 after 160 hrs. 4. Typical rocker arm roller pin of engine 719 after 160 hrs. Fig. 11--1. Main bearing No. G of engine 801 after 100 hrs., showing slight groove caused by foreign substance. 2. Lower half No. 6 crankshaft bearing of engine 719 af ter 100 hrs. 3, 4 and 5. Typical upper connecting-rod bearings of engine 801 after 100 hrs. the manufacture and assembly of any piece of machinery, and shows no faults in design. In fact, the condition of the motor at the end of the test would indicate that quite a few more hours of flight were possible without any serious trouble, although the nearness to trouble is indicated by the condition of the connecting-rod bearings, which, however, was pronounced in only one or two cases. This would indicate somewhat of a lack of uniformity which is possible in manufacturing, especially in the production of bearings. As a result of these tests, it would seem that the safe recommendation for maximum length of flight without overhauling would be about 150 hrs., and 125 hrs. probably would be a safer figure. No. 3. Considering engine No. 719, the flight observations covering its test showed an exceptional lack of motor trouble aside from spark plug replacements. These, however, do not indicate a serious situation, owing to the fact that various types of plugs were leing tested, and while the replacements were quite numerous, the greater number of these in no way affected the duration of the flights. In fact, most of the plug trouble was discovered only as the result of inspection after the flights, and the plugs were then replaced to avoid trouble in the air. The inspection of this engine more

Product details

  • Paperback | 160 pages
  • 189 x 246 x 9mm | 299g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236486331
  • 9781236486332