Indianapolis Times, Indianapolis, Marion County, 5 December 1940 — Page 14
Model | =
YOUR NEGATIVE THRUST ADDS TO FLIGHT’S | RANGE
It's Protideed iy by Slanting The ‘Prop’ Shaft Slightly Downward.
BY DAVID MARSHALL With the plans of pearly every contest type rubber-powered model, the rookie model builder will find a puzzling note which usually reads something like this:
“Two degrees negative thrust,” or :
#Two degrees downthrust.” - You might think that negative thrust was something the plane would better be without, but without negative thrust you'll never get long flights from your model. Negative thrust is produced by slanting the propeller shaft bearing or noseblock so the shat} points “slightly. downward. : It’s Hard to Measure
The degrees of negative thrust are measured on the angle formed by ‘the theoretical thrust line, which is directly forward, and the actual thrust line after slanting the noseblock. The amount of negative thrust (or downthrust) depends upon the flight tendencies of the individual model. It’s hard to measure so most model builders = determine: the correct amount by fight-testing their ships. When the model is in flight downthrust tends to pull the nose of the plane down and cause it to dive. But this tendency is present only when the plane is under power. - When the power ceases, the prop ‘goes free-wheeling and the plane glides, free from the forces of negative thrust. , Experts use downthrust because the diving tendency which it produces makes it necessary for the wing to-be placed well forward on the fuselage.
Builds Up Endurance
But with the downthrust, when the power is exhausted and: the model is high in the air, the wing is far enough toward the nose to produce a flat glide. This builds up the endurance of the ship. You might think that the negativé thrust method means that the stabi®lizer and wing are not proportioned “correctly, But there is no arrangement. of surfaces which would produce the wide differences in a model's performance when it has power on and when it is gliding. The proper way to determine the correct amount of - negative thrust is to first glide the model. = Adjust the wing for the best possible glide. Then try the plane with a few winds in the rubber motor. Chances are it wil] stall, so be over a grassy field. Then place a strip of onesixteenth hard balsa between the noseblock and the fuselage on the top side and-try it with power again. Keep increasing the sizet of the strip behind fhe noseblock until the ship climbs without stalling. The wing adjustment then should not be changed from the place of perfect glide. ”
Uses Scotch Tape
To show the workmanship within his model, Jack Schieder of Trenton, N. J, covered one of his ships with cellophane. The covering was shrunk tight by giving the model a steam bath. Jack reports that repairs can be neatly done on this type covering by simply using strips of transparent scotch tape.
2 #
Fraternity Initiates Six—Six new members of Chi Sigma Chi Alpha social fraternity were initiated this week. They are Carl Haas, Robert Hazen, William Gamble, Keith Mullen, Paul White and Edward Harness Jr.
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. 1 \ Dr. Terry M. Townsend . . . “How to Choose Your Doctor.”
Dr. Terry M. Townsend, prominent New York City surgeon and past president of the New York State Medical Society, will speak this afternoon and eveging at the Methodist Hospital Nurses Home. At 2:30 o'clock Dr. Townsend was to speak to the White Cross Guild on “How to Choose Your Doctor” and in the evening to the hospital medical stak on “The Doctor Looks at the Citizen.” One of the founders of the American Urological Association, Dr. Townsend is a graduate of the Louisville Medical School.
Stamp Club to Meet—The Indiana Stamp Club will meet at 8 p. m. tomorro at the Antlers Hotel.
Dinner to Honor Two—Ivan Glidewell and H. D. Frankel Jr, local Red Cross first aid instructors, will be guests of honor at a dinner party in Canary Cottage Monday night sponsored by the First Aiders Club of Indianapolis. After the dinner, there will be a regular first aid class at the World War Memorial which will be open to the pubic as well as class members.
‘Rebecca Lodge to Meet—The Ellen Rebecca Lodge 520 will meet at 7:30 p. m. tonight at Castle Hall.
HEAR BISHOP BLAKE IS ‘SATISFACTORY’
The condition of Methodist Bishop Edgar Blake, retired, who is in a Wilmington, N. C., hagpital following an auto accident near there Sunday, is “continuing satisfactory,” it was learned here today. Mrs. Blake, who was driving the car and was most seriously injured, was reported in “fair” condition. She received two fractured ribs, a broken collarbone and back injuries. Bishop Blake - received a fractured jaw and bruises. He served the Indianapolis area of the Methodist Church from 1928 to 1932.
bing Peter (PREDICT TRUCK SHOW: 22rd mesma. To Pay Paul
NEW CASTLE, Ind, Dec. 5 10 ATTRACT 10,000 Motors Corp.
Few persons outside the indlistey ; : Sraciod Yealize wat the plant ‘here is the Nearly 10,000 persons, attrac y | world’s largest commercial bod (U. P)—A new system of CTOp |(hecney lines and national defense |manufacurer and that all orien rotation in which three New |exhibits, will have seen the Chev- body equipment for Chevrolet :rucks | Castle youths admitted stealing |rolet Commercial Body Division's corn from one party to replace truck show at the Murat Temple by | that stolen from another, sent
ARRY N. GARVER,
JOINT CONGRESS Rob GROUP TO STUDY BUDGET URGED
gram St., retired painting contractor, died ast night at City Hospital after an illness of two weeks.
Indianapolis for more than 50 years. ‘He is survived by his wife; a
‘throughout the empire as security.
* APPR
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BE
EC IATE *
is locally built. closing tomorrow at 9 p. m,, , officials them to jail today. nephew and niece,
Part of the cxhibit is the first midestimated today. They confessed taking corn
western showing of the famed Allison liquid-cooled airplane engine The exposition is being held in{which powers: America’s fastest from the crib of one of the boy’s |celebration of National Truck Week father to sell at local mills and |and the 10th anniversary of the replacing it with corn stolen
fighting planes. Other exhibits show the newest development in synthetic | Commercial Body Division here. One from a neighbor. of the largest displays of- commer-
materials and the actual develop-|Saturday in the Hisey & Titus Fument of Chevrolet truck bodies. neral Home, burial in Crown Hill. A RETR A i YY WM ES ES Re RE SR AM RA RE RE RE RR ». x Start Payi Start Paying . . .
NEXT MARCH 15th The STEWART-WARNER
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Administration: 0. K.* for
Non-Defense Balance Plan Expected.
WASHINGTON, Dec. 5 (U. P.).— Congressmen whose job it is to raise and spend billions of dollars .annually today generally favored a proposal for creation of a joint Senate and House committee to help Congress balance the non-defense budget. The plan will be submitted to the new Congress by Rep. Clifton A. Woodrum (D. Va.), a leader of the House economy bloc. It would place on'the new committee all members of the House Ways and _ Means, Senate Finance, and both appropriations committecs, and the Senate and House Democratic and Republican leaders. The proposal undoubtedly will receive Administration approval since a similar plan proposed by Chairman Pat Harrison of the Senate Finance Committee last year was favored by Secretary of the "Treasury Henry Morgenthau Jr. Bills Frequently Changed
The present fiscal set-up in Congress calls for the House Appropriations Committee to receive the President’s budget and work out detailed appropriation bills. Those are frequently changed in the Senate, as is tax legislation which originates in the House Ways and Means Committee. Appropriation bills, being the first-major business on the calendar, are enacted without regard to revenue or new taxes to be proposed. Mr. Woodrum’s joint committee would discuss the normal, or nonmilitary, budget, consider the revenue situation and recommend to the Appropriations and Tax Committees what is needed to keep the budget in balance. The regular committees would then proceed with their work, but could disregard the suggestions. ‘Time to Close Gap’ —-Eocles Federal Reserve Board Chairman Marriner S, Eccles told a New York meeting last week that he believed it was time to try to “close the gap between income -and outgo as far as can be done without confiscatory taxation or the retarding of private expenditures.” Mr. Eccles’ off-the-record address to the National Industrial Conference Board was released belatedly because, he said, of “incorrect and misleading accounts” that were published yesterday. He denied that he had advocated a $2,500,000,000 loan to Great Britain but disclosed that he had suggested the desirability of Congress considering credits to that country, with British gold and holdings here and
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CLAIM NAZIS RAN BLOCKADE BOGOTA, Colombia, Dec. 5 (U. P.).—The 3664-ton German freighter Helgoland, -which left Puerto Colombia Oct. 9, evaded the British blockade and reached Hamburg two days ago, newspapers said today. It was reported that the Helgoland had carried 300 passengers.
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EX-PAINTER, IS DEAD|
Harry Newton Garver, 1718 In-|
Eugene and Louise Duncan, Indianapolis, and| a brother, L. A. Garver, Boise, Ida:| The funeral will be at, 2 p. m.|
Mr. Garver, who was 71, was born!) in Danville, Ill, and had lived in! ¥,
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