Ferri - NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS REPORT...

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NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS REPORT No. 841, . APPLICATION OF THE METHOD OF CHARACTERISTICS TO SUPERSONIC ROTATIONAL FLOW By ANTONIO FERRI DTIC _ ELECT SEPO 1995. G 1946 19950831 055 itiumUbie 1"obU ~ie
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AERONAUTIC SYMIBOLS 1. FUNDAMENTAL AIND DERIVED UNITS IMetric English Symbol Unit Arei-LiiAbireiia- tion lion Length ---- meter -------------------- m foot (or mie---------ft (or inl) Time ----- t second --------- se,,sncl (or hotr) -- e~c (oi- hr) Force ---------- F weight of 1 kilogramn--- kg 1 wC~abt of I pound --- 1b Power---------P horsepowver (metric) ----- 1----------hosa e - ------- lip) Speech- 7 V f kiloeters per hour ---- keli iles per eoti- m~ph Lmete~rs per seond- [ umTSs feet pe~r soond_ f p, 2. GENERAL SYMBOLS W W~gt7) Klinmatic ,,52S-()ity S Standard acceleration of yravitv =9.806C)5 m/s2 p Density (mess per- unit, volume) or 3.2.1740 ft/'sec 3 Standard density of drv air, 0.12407 leg-rr-o t 7 at 15" C '\as and 760 mm; or §,.0Ll23)78 lb-ft- 4 sec' rn Mas~-~-Specific weight of "standard" air, 1.2255 kg/rn 3 or I Moent f inrtiaeok. (Indicate axis of 0.07651 lb/eu ft raqdius of gyration kc by proper subscript.) A Coefficient of viscosity 3. AERODYNAMIC SYMBOLS S Area t,. Angle of setting of wings (relative to thrust line) S . Area of wving il Angle of stabilizer setting (relative to th-rust G Gap line) b Span 9 Resultant moment C Chord Sq Restdtant augular velocity A Aspect ratio, R 1 Reynolds number, P- whrV1salierdmn V True air speed sion (e.g., for an airfoil of 1.0 ft chord, 100 maph, q Dyami prssur, ~V' ~standard pressure at 15' C, the corresponding Reynolds number is 033.400; or for an airfoil L Lft bsout coffiien Lof 1.0 m. chord, 100 mps, the corresponding Lqit asltecefiin Reynolds numiber is 6,80)5,000) D' bslut f~t D a Angle of attack coetmYn Angle of downwash D, Profile drag, absolute coefficient(, o D a 0 Angle of attack, infinite aspect ratio 0 qS a, Angle of attack, induced D, ndce drgabolue oeficen CD,.-D a, Angle of attack, absolute (measured from zero- D 4 ~ ~~~~~ YnueSrg bolt ofiin lift position) D, Parasite drag, absolute coefficient 0 D -y' Flight-path angle C Cross-wind force, absolute coefficient C
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REPORT No. 841 APPLICATION OF THE METHOD OF CHARACTERISTICS TO SUPERSONIC ROTATIONAL FLOW By ANTONIO FERRI Langley Memorial Aeronautical Laboratory Langley Field, Va. &,,,sion For NTLS CRAMl DTIC TAB Unannouced Q justification By Distributionl AvailabilitY codes Avail and I r Dist special
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National Advisory Committee for Aeronautics Headquarters, 1500 New Hampsh ire Avenue NWV, Washington 25, D. C. Created by act of Congress approved March 3, 1915, for the supervision and direction of the scientific study of thle problems of flight (U. S. Code, title 49, see. 241). Its mnembership was increased to
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Ferri - NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS REPORT...

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