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  Partner: UNT Libraries Government Documents Department
 Collection: Technical Report Archive and Image Library
Spinning Characteristics of Wings III : A Rectangular and Tapered Clark Y Monoplane Wing with Rounded Tips

Spinning Characteristics of Wings III : A Rectangular and Tapered Clark Y Monoplane Wing with Rounded Tips

Date: September 1, 1937
Creator: Bamber, M J & House, R O
Description: An investigation was made to determine the spinning characteristics of Clark Y monoplane wings with different plan forms. A rectangular wing and a wing tapered 5:2, both with rounded tips, were tested on the N.A.C.A. spinning balance in the 5-foot vertical wind tunnel. The aerodynamic characteristics of the models and a prediction of the angles of sideslip for steady spins are given. Also included is an estimate of the yawning moment that must be furnished by the parts of the airplane to balance the inertia couples and wing yawing moment for spinning equilibrium. The effects on the spin of changes in plan form and of variations of some of the important parameters are discussed and the results are compared with those for a rectangular wing with square tips. It is concluded that for a conventional monoplane using Clark Y wing the sideslip will be algebraically larger for the wing with the rounded tip than for the wing with the square tip and will be largest for the tapered wing. The effect of plan form on the spin will vary with the type of airplane; and the provision of a yawing-moment coefficient of -0.025 (i.e., opposing the spin) by the tail, ...
Contributing Partner: UNT Libraries Government Documents Department
Spinning characteristics of wings IV : changes in stagger of rectangular Clark Y cellules

Spinning characteristics of wings IV : changes in stagger of rectangular Clark Y cellules

Date: December 1, 1937
Creator: Bamber, M J & House, R O
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Spinning characteristics of wings V : N.A.C.A. 0009, 23018, and 6718 monoplane wings

Spinning characteristics of wings V : N.A.C.A. 0009, 23018, and 6718 monoplane wings

Date: January 1, 1938
Creator: Bamber, M J & House, R O
Description: Three rectangular monoplane wings having rounded tips were tested on the N.A.C.A. spinning balance in the 5-foot vertical wind tunnel. The airfoil sections used were the N.A.C.A. 0009, 23018, and 6718. The aerodynamic characteristics of the models and a prediction of the angles of sideslip for steady spins are given. There is included an estimate of the yawing moment that must be furnished by parts of the airplane to balance the inertia couples and wing yawing moments for spinning equilibrium. The predicted angles of sideslip and yawing moments required for spinning equilibrium for a Clark Y wing with the same form are included for comparison.
Contributing Partner: UNT Libraries Government Documents Department
Spinning of large airplanes

Spinning of large airplanes

Date: October 1, 1944
Creator: Seidman, Oscar
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Spiral tendency in blind flying

Spiral tendency in blind flying

Date: August 1, 1929
Creator: Carroll, Thomas & Mcavoy, William H
Description: The flight path followed by an airplane which was being flown by a blindfolded pilot was observed and recorded. When the pilot attempted to make a straight-away flight there was a tendency to deviate from the straight path and to take up a spiral one.
Contributing Partner: UNT Libraries Government Documents Department
Sponge Chromium

Sponge Chromium

Date: 1942
Creator: Maier, C. G.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Sponge Iron and Direct-Iron Processes

Sponge Iron and Direct-Iron Processes

Date: 1954
Creator: Barrett, Edward P.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Sponge-Iron Experiments at Mococo

Sponge-Iron Experiments at Mococo

Date: 1936
Creator: Maier, Charles G.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Spontaneous combustion of hydrogen

Spontaneous combustion of hydrogen

Date: December 1, 1923
Creator: Pothmann, PH & Nusselt, Wilhelm
Description: It is shown by the author's experiments that hydrogen which escapes to the atmosphere through openings in the system may burn spontaneously if it contains dust. Purely thermal reasoning can not account for the combustion. It seems to be rather an electrical ignition. In order to determine whether the cause of the spontaneous ignition was thermo-chemical, thermo-mechanical, or thermo-electrical, the experiments in this paper were performed.
Contributing Partner: UNT Libraries Government Documents Department
Spontaneous flammability of pentaborane and pentaborane-3-methylpentane blends

Spontaneous flammability of pentaborane and pentaborane-3-methylpentane blends

Date: February 13, 1957
Creator: Fletcher, Edward A
Description: None
Contributing Partner: UNT Libraries Government Documents Department