AIRCRAFT NOMENCLATURE

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for the most part unarmed. These are ships that serve a variety of purposes in continental and overseas harbors, sea frontiers, convoys, amphibious forces, and task forces. Many are small, but of incalculable use to the Navy. With a few exceptions, support craft designations start with the letter Y. A few of the class names identify the many duties they perform: Auxiliary floating dry dock—large (AFDB) and small (AFDL) Floating crane (YD) Diving tender (YDT) Ferryboat or launch (YFB) Fuel oil barge (YO) Gasoline barge (YOG) Oil storage barge (YOS) Floating workshop (YR) Tug (YTL, YTM, or YTB) Water barge (YW) REVIEW 5 QUESTIONS Q1. What is the term used to describe the transfer of f u e l a n d s u p p l i e s b e t w e e n s h i p s w h i l e underway? Q2. Ships usually maintain a distance of _______ feet while taking on supplies at sea. Q3. What type of replenishment allows a receiving ship to stay on station in combat formation? Q4. What class of ship is the largest and most powerful auxiliary ship? Q5. The mission of the rescue, salvage, and towing ships is to— Q6. Support craft designators usually start with what letter? NAVAL AIRCRAFT Learning Objective: When you finish this chapter, you will be able to— Recognize fixed-wing and rotary-wing aircraft, t o i n c l u d e a i r c r a f t n o m e n c l a t u r e a n d characteristics. The history of naval aviation goes back to 1911 when the Navy acquired its first aircraft, a pusher-type biplane with no cockpit. The only covered surfaces were the wings and tail, and flight speed was less than 50 mph. By contrast, today’s high-performance planes have speeds in excess of 2,000 mph. AIRCRAFT NOMENCLATURE In this section, you will learn the basic parts of aircraft and how the Navy identifies aircraft. Fixed-Wing Aircraft Nomenclature A fixed-wing aircraft (fig. 8-39) may be divided into three basic parts—fuselage, wings, and empennage (tail). FUSELAGE.—The fuselage is the main body of the aircraft, containing the cockpit and, if there is one, the cabin. On virtually all naval fighter and attack aircraft operational today, the engines and some of the fuel tanks are mounted within the fuselage. WINGS.—Wings are the primary lifting devices of an aircraft, although some lift is derived from the fuselage and tail. Located on the trailing (rear) edge of the wings are flaps that may be used to give extra lift on 8-32 Student Notes:

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