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MIL-HDBK-781 6.8.1.1 Type A V/STOL missions. Type A V/STOL missions are defined in a through g: a. Airborne early warning: Take off vertically, climb to altitude, cruise Out, loiter, and cruise back at high altitude, descend, land vertically b. Antisubmarine warfare: Take off vertically, climb to altitude, cruise Out, loiter, deliver ordnance, cruise back at high altitude, descend, land vertically c. Contact investigation: Take off vertically, climb to altitude, dash at low altitude, loiter and deliver ordnance at low altitude and low soeed climb to j - . _ high altitude, cruise back at high altitude, descend, land vertically d. Marine assault: Take off vertically, cruise Out at sea level, hover at 3000 ft, cruise back at sea level, land vertically e. Surface attack: Take off vertically, climb to altitude, cruise out at high altitude, loiter and deliver ordnance at 20,000 ft at low speed, cruise back at Ui/,1, n 1 f i f11 ft a ?>/. A lnn/4 itAirfi^ftllif mg'i ainiuuk, ukovvuu, laxiu winvcuiy f. Tanker: Take off vertically, climb to altitude, cruise out at high altitude, loiter i i j i ._ . c : i i. j. ai IUW spccu cuiu IUW aituuuc IU uAIIMCI IUCI, CIUISC uacn ai uigu auuuuc, descend, land vertically g. Vertical onboard delivery: Take off vertically, climb to altitude, cruise at high altitude, descend, land vertically 6.8.1.2 Type B V/STOL missions. Type B V/STOL missions are defined in a through c: a. Combat air patrol: Take off vertically, :limb to altitude, cruise out and loiter at high altitude, engage in combat at high speed and lower altitude, cruise back at high altitude, descend, land vertically b. Deck launched interception: Take off vertically, climb at high speed to altitude, dash out and engage in combat at high altitude and high speed, cruise back at high altitude, descend, land vertically c. Subsonic surface surveillance: Take off vertically, climb to altitude, cruise Out and loiter at high altitude, engage in combat at intermediate altitude, cruise back at high altitude, descend, land vertically 6.8.2 Thermal stress. The procedures of 6,7.2 should be applied. Whenever V/STOL designs include cooling systems and techniques designed to maintain coo! ambient conditions for Urtrnnif harrlurar* a flacc 1 fhpfTnol pnvimnmmt mflv livH V1WVUU1UW liU.UT.UlW, U V11. a U.VI J11MI I ii Viit.lM., iMMy VW W.'^M . o i Ar.\ .: .t.^.,\//CTOT AL.ROA IN U.O.J v luidtmii aucaa. v luiauuil ciicwu uu E^uipiiuu iui T/J j ul, cuiwian u^iainig in _ i : J ~ : J i .u u .n^mA a nurizunuii lugui niuuc arc lucnucai iu uiusc cApcucuccu v>y wiivtmiuiioi iiAtu-wmg ancian. For vertical flight modes (takeoff and landing), the vibration levels are significantly different because of ground effects. TABLE XLV, an abridged version of TABLE XXXI, should be used for V/STOL; it includes vibration test ievels (W0) for V/STOL peculiar takeoff and ianding conditions. The OK takeoff and Ianding W values were calculated using V/STOL engine parameter information for both Types A and B V/STOL aircraft. 88

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