Air Wonder Stories, August 1929 — page 94: what you’re looking at

Machine-transcribed from the original scan — historical spelling and the odd misread are preserved.

188 SKINDERVIKEN Transmitter Units 95° Two for $1.75 L ives of: uses. Every amntour should havo two sat a ree Of these amplifiers in his Isboratory ‘A FEW use FOR THESE _ aIye (2 PAGE eereuarres BOOuL RT. re innumerable us conta! suggestions pee Hegrams ee lo Net, WE PAY $5.00 IN CASH for every new use doveloped for this unit and accoptéd and pub by us, P. G. Microphone Transformer A Modulation Trans- former- apvolally —de~ signed for. uss the. Siinderriken a 2 ney, 69 ohms, FOR SALE AT LEADING DEALERS Or Order Direct, Using Coupon. Below SEND NO MONEY Whon tho postman dolivers your order you pay him for yhatorer 30 have ordered, plus o fow conta postage. PRESS BUILD, WO. CsSS*S*S*~CSC RD 6-18-A—East U0th St., New York, M. Y, Please. sen ts st once -an many of the following tHomi as I. rate: indtia aoe Bkcin ari jenamliler untte at S50, for 1; $1.75 8; 38.20 fo og ll hee ¢ Ranirgat at at of the ib ve oe ebay te postman the co: NAMO ssesrsecvaveacsnrersraveraneanpucssuanorscenasseny Address 1 ea Ae AIR WONDER STORIES LETTERS FROM OUR READERS Conran6{ ui tde8 0 omp How a Plane Operates Batter AIR WONDER. STORIES: Arm Wonper Stores is alright, Victor MacClure, Morrow, Sykes, Keller and Stone are: alls in ‘my opinion, first-class ‘authors, -I enjoyed each of the stories Stamiensely even though I knew. very. little: about aviation, In: your: stories ae as thou in the Meh flyin ith the could look ‘down. an: Pos the landscapes spread: ing out for miles around me, Then I would sny-to myself, “Well, hers Iam; I’ve realized Tog mark to fly, ‘but how does the darned Skice you have been a beacon of slighias: ment. on —sci ic things for many ~years, take ate: liberty ne anki E you a ee qu oo about: the operatian-0f 1, tis it that makes ic ‘thing go? 2, Since th plane ia heavier than. air, what keeps it in the nir? 3. What is it--that steera the plane; what makes it go tp -or down or turns it ieft or Tf you can find space in your columns, I would’: appreciate. very much-an answer to these questions, as T know there are a great many. like myself who. are anxious to BEN NTAMN, JENKINS Ci (We might say that we ave porieioeea the requests of men like Mr, J who are fa roieke the wh ae wnrelatee of avia- ion, and are beginning, September issue, a department cal led "aviation ‘orum,”” I were up enit, The-answers to Mr, Jenkins’ questions are as follows: 1, The propelling force of a Plane is, of course, an engine which fotstes propeller, The pi ler, -in_ cutting the air air at a peat speed, like a scraw, sala columns of air ward and draws: the plan ie The austaining ores for the plane is the ir pressure under the wings, In other words, a velocity of the plane through the air creates a, pressure: of air which, acting, against ibe wings, sustains the plane, ince the pressure is dependent on the velocity of the plane, and fines there is.a- minimum: air pressure necessary to sustain the plane, there is a mini- ine velocity at which the plane will remain 3,, At the tail of tie plane is a vertical, mov- iy te omit od cae She ee AE te Cevbbes in the o it is ce ie ‘00 he. vane toward ‘the -right, That creates an added. pr rear agninat the sei ie of the vane which swings the: tail ae acts and teretore turns Soe al right... The opposite wotl te: true around denresig th the pet foot-bar. At the tail of the plane isa horizontal miov- Whea the pilot moves his control stick forward. the vane is lowered, Therefore there isan ao! pressure on the vane which tirns the noweof the saa te sae glee is reecnaen ee ing direction at a High vel F the ailerons, one located in the rear of wing. By moving the control bom grea the the right aileron. is lifted, mad the left tne wered, ‘This creer a. downward pressure on the right afleron ond an upward on the left one, Thes the plane banks to the right, To bank to the left the control stick is moved to the. left.—Edétor.) The Best Aviation Magazine Editor. AIR WONDER STORIES: I have read- through Arr. Woxper Srontes from. cover. to cover and pronounce it the best avintion magazine. Pye seen yet. And I've seen plenty, [always thought that there was a place for a good ma; ¢ dealing with the air, and ‘naturally it. should have. Sererad to me that who but my good friend Mr, Gernaback should edit it. BERTRAND SAN, (Another of the. complimentary letters: that have come to ua about the first Vass of Am Ci Aisi iee is Mr. Hickman’s, We are sues ta th the plana we have-in mind for iu at es icHpen poe bee become. a force. opera’ “great aviation i lg ay this country and aires Mtton) ters, and - Every Aviation Question Answered By Victor W. PAGE’S AVIATION BOOKS Everybody’s Aviation Guide By ete Victor W. Pack This prsctieal non - technical book is written especially for the aviation enthusi- ast. It is a mine of information — tells all about the construction of airplanes and dirigibles and‘ how they nayvi- gate the air. Here you will find ten lessons logic- ally arranged in question and: answer form, Save your time—read the book —get the meat of the subject. It con- tains everything from elementary con- ceptions. of mechanical flight and primitive forms of aircraft:to a more advanced consideration of aero- dynamic principles. 140 Tiiuateations, 256 Pages, Price, $2.00 Modern Aircraft Design, vam Operation and By Major vite W, Pact This book is written in simple lan- guage for the practical man, It shows just ° how an air- lane flies and 1s controlled, outlines and ‘de- scribes: all im- portant parts of the plane and & just what they , - do and how they are. used, Covers the. commercial possibilities of air- craft types, outlines their spheres of usefulness and considers the cost of flying. The equipment of airports airways and landing fields is touched upon, and a complete and easily un- derstood explanation of all branches of aecodynataies aa well as a complete glossary of terms used in aeronautics are included, 400 Illustrations, 855 Pages. Price, $5.00 For Sale by TECHNI-CRAFT PUBLISHING eqpe. 98 Park Place, New York, N. Y. AGENTS WANTED FREE BOOK. Start little Mnil_ Order. buai- ness... Hadwil, 27/A-74 Cortlandt Street, N, Y, Reproduce Bren, Pishuren ie ea with- or ties ensive, Samples and articular ite Stealey, 154 W. Main, ‘Springfield, Ohi MOTION PICTURES Good. standard movie films. 300 feet $1.00. Semple, Particulars Free. Eastin Feature Films, Dept: B, Galesburg, Tl. OPPORTUNITY 501_Ways to make moncy. Particulars. tree. C. Terry, 1964 W. 7th Street, Brooklyn, N.Y, SONG POEM WRITERS POEM WRIT! TIERS —sresl proposition, Hipbelen, DI53X, 2104 N. Keystone, Chicago.