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Analytical and experimental investigation of the effects of compressor interstage air bleed on performance characteristics of a 13-stage axial-flow compressor

Description: Air was bled over the fifth-and tenth-stage rotor-blade rows through ports designed to pass 11 and 9 percent of the inlet flow, respectively, at 80 percent speed. Along the rated operating line the maximum speed at which rotating stall was encountered was lowered by either of these bleeds, and the stall patterns below these speeds were altered so that no dangerous resonant rotor-blade bending vibrations were excited. The combination of the two bleeds completely eliminated rotating stall to at least 50 percent speed. The compressor-discharge weight flow was decreased only at intermediate speeds, and the overall pressure ratio was affected only at intermediate speeds, and the overall pressure ratio was affected only by the combination bleed at intermediate speeds. Fifth-stage bleed increased compressor efficiency at low speeds, and tenth-stage bleed decreased efficiency at intermediate speeds.
Date: February 8, 1957
Creator: Lucas, James G.; Geye, Richard P. & Calvert, Howard F.
Partner: UNT Libraries Government Documents Department

Beehive and Hornet : Reactor Codes for Spherical Geometry

Description: Abstract: Beehive is a five energy group, two region, time independent spherical reactor code. It considers the problem of reactor system in which the core material is assumed to be at a higher energy (temperature) than the reflector material. The code obtains a closed solution for the critical reactor assembly by a procedure which is a logical extension of normal two group theory. The companion code, Hornet, computes the neutron fluxes for the critical assembly determined by the Beehive calculation. Both codes have been programmed for the IBM Magnetic Drum Data-Processing Machine, Type 650. The codes, together with the flow diagrams, are included with this report.
Date: February 8, 1957
Creator: Stone, Stuart P.
Partner: UNT Libraries Government Documents Department

[Bell employee working on the main rotor blade of the XH-40]

Description: Photograph of a Bell employee working on the main rotor blade of the XH-40 from a series of photos of the XH-40 co-op advertising, cannon plugs, heli coil screw lock insert, main rotor blade 114" brass extrusion, American Brass, aluminum main rotor grip, Joy Manufacturing Company fan, engine showing cannon connections.
Date: November 8, 1957
Partner: UNT Libraries Special Collections

Chemical igniters for starting jet fuel - nitric acid rockets

Description: Report presenting experiments in a 200-pound-thrust jet fuel-nitric acid rocket with an axial-flow igniter employing the hypergolic alkyl thiosphosphite-nitric acid system. No combustion instability was observed in the igniter, but many of the main-stage runs exhibited low-frequency oscillations.
Date: October 8, 1957
Creator: Morrell, Gerald & Ladanyi, Dezso J.
Partner: UNT Libraries Government Documents Department

[Close-up of a part of the XH-40]

Description: Photograph of a close-up of a part from the XH-40 from a series of photos of the XH-40 co-op advertising, cannon plugs, heli coil screw lock insert, main rotor blade 114" brass extrusion, American Brass, aluminum main rotor grip, Joy Manufacturing Company fan, engine showing cannon connections.
Date: November 8, 1957
Partner: UNT Libraries Special Collections

[Close-up of the main rotor blade of the XH-40 being worked on]

Description: Photograph of Close-up of the main rotor blade of the XH-40 being worked on from a series of photos of the XH-40 co-op advertising, cannon plugs, heli coil screw lock insert, main rotor blade 114" brass extrusion, American Brass, aluminum main rotor grip, Joy Manufacturing Company fan, engine showing cannon connections.
Date: November 8, 1957
Partner: UNT Libraries Special Collections

[Close up of the XH-40 cannon plugs]

Description: Photograph of a close-up of cannon plugs in the XH-40 from a series of photos of the XH-40 co-op advertising, cannon plugs, heli coil screw lock insert, main rotor blade 114" brass extrusion, American Brass, aluminum main rotor grip, Joy Manufacturing Company fan, engine showing cannon connections.
Date: November 8, 1957
Partner: UNT Libraries Special Collections

Experimental study of the effects of scale on the absolute values of zero-lift drag of aircraft configurations at transonic speeds

Description: Report presenting an investigation at a range of Mach numbers from 0.7 to 1.4 to determine the effect of scale on the zero-lift drag of a fin-stabilized body of revolution and a fighter-type airplane configuration. Results obtained at low values of Reynolds number were compared with larger scale data obtained on geometrically similar models in free flight. Results regarding fin-stabilized body and airplane model are provided.
Date: February 8, 1957
Creator: Howell, Robert R. & Braslow, Albert L.
Partner: UNT Libraries Government Documents Department

Exploratory Investigation of the Effect of Wing Slots and Leading-Edge Slats on the Longitudinal Stability Characteristics of a 45 Degree Sweptback Wing-Fuselage Configuration

Description: Report presenting an exploratory investigation to determine the effects of wing slots on the longitudinal stability characteristics of a 45 degree sweptback wing-fuselage combination. Results regarding pitching-moment characteristics and lift and drag characteristics are provided.
Date: February 8, 1957
Creator: Critzos, Chris C.
Partner: UNT Libraries Government Documents Department

Free-Flight Experience of the Lateral Stability Characteristics at Low Lift of a 45 Degree Swept-Wing Rocket-Propelled Model Equipped With a Nonlinear Yaw-Rate Damper System at Mach Numbers From 0.76 to 1.73

Description: Report discussing a low-lift lateral stability investigation with a rocket-propelled model of a 45 degree swept-wing-airplane configuration equipped with an auxiliary yaw-rate damper system at a range of Mach numbers. Results indicated that the system was nonlinear due to a large dead spot in the system. The primary effect of the system was to increase the damping of lateral oscillations.
Date: February 8, 1957
Creator: D'Aiutolo, Charles T.; Willoughby, William W. & Coltrane, Lucille C.
Partner: UNT Libraries Government Documents Department

Ground Simulator Studies of the Effects of Valve Friction, Stick Friction, Flexibility, and Backwash on Power Control System Quality

Description: Report presents results of tests made on a power control system by means of a ground simulator to determine the effects of various combinations of valve friction and stick friction on the ability of the pilot to control the system. Various friction conditions were simulated with a rigid control system, a flexible system, and a rigid system having some backlash. For the tests, the period and damping of the simulated airplane were held constant.
Date: February 8, 1957
Creator: Brown, B. Porter
Partner: UNT Libraries Government Documents Department

[Main rotor of the XH-40]

Description: Photograph of the main rotor of the XH-40 from a series of photos of the XH-40 co-op advertising, cannon plugs, heli coil screw lock insert, main rotor blade 114" brass extrusion, American Brass, aluminum main rotor grip, Joy Manufacturing Company fan, engine showing cannon connections.
Date: November 8, 1957
Partner: UNT Libraries Special Collections

[News Script: 1,000,000th turnpike sucker]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, covering a news story about a commemoration ceremony for the millionth driver to enter the Dallas-Fort Worth turnpike since its opening earlier in the year.
Date: November 8, 1957
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections

[News Script: 49th displays armored might]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, covering a news story about a parade of armored vehicles by the 49th Armored National Guard Division during a training camp at Fort Hood.
Date: June 8, 1957
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections

[News Script: Air Force medicine]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, covering a news story about space travel-related research at the school of aviation medicine at Randolph Air Force base in San Antonio.
Date: September 8, 1957
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections

[News Script: Air reserve]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, covering a news story about Air Force officials from Washington gathering at the Baker hotel in Dallas for the Air Reserve Commanders meeting.
Date: December 8, 1957
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections

[News Script: Airline girl]

Description: Script from the WBAP-TV station in Fort Worth, Texas, covering a news story about Sandra Deitrich, a Central Airlines stewardess, being selected for the finals of the national "Miss Spirit of St. Louis" contest.
Date: April 8, 1957
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections

[News Script: Antique show]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, covering a news story about a large antique show in Fort Worth with thousands of valuable items on display from around the world.
Date: November 8, 1957
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections

[News Script: Assistant U.S. Attorney sworn in]

Description: Script from the WBAP-TV station in Fort Worth, Texas, covering a news story about Phillip C. McGahey, Jr., the new assistant attorney for the northern district of Texas, being sworn in in Fort Worth.
Date: March 8, 1957
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections

[News Script: Auditorium]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, covering a news story about Dallas dedicating its new memorial auditorium to the Dallas war dead of all wars.
Date: September 8, 1957
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections

[News Script: Beer truck robbery]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, covering a news story about a Fort Worth beer truck driver being robbed in front of a cafe.
Date: July 8, 1957
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections

[News Script: Big piece of candy]

Description: Script from the WBAP-TV station in Fort Worth, Texas, covering a news story about the largest piece of caramel candy in the world arriving at Leonard's department store in Fort Worth, Texas.
Date: October 8, 1957
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections

[News Script: Blinded boy]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, covering a news story about a blind man arriving in Fort Worth after being accepted to Baylor University.
Date: August 8, 1957
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections