A successful step toward an advanced supersonic transport engine - Acoustic and emission results from the Pratt and Whitney Aircraft Variable Cycle Engine Program

Microstructure of an extruded rapidly solidified Al-8Fe-2Mo alloy

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100144218 ◽

1986 ◽

Vol 44 ◽

pp. 548-549

Author(s):

W. T. Donlon ◽

J. E. Allison ◽

S. Shinozaki

Keyword(s):

Electron Microscopy ◽

Automotive Industry ◽

Fuel Economy ◽

High Strength ◽

Al Alloys ◽

Light Weight ◽

Thin Sections ◽

Strength And Durability ◽

Rapidly Solidified ◽

Whitney Aircraft

Light weight materials which possess high strength and durability are being utilized by the automotive industry to increase fuel economy. Rapidly solidified (RS) Al alloys are currently being extensively studied for this purpose. In this investigation the microstructure of an extruded Al-8Fe-2Mo alloy, produced by Pratt & Whitney Aircraft, Goverment Products Div. was examined in a JE0L 2000FX AEM. Both electropolished thin sections, and extraction replicas were examined to characterize this material. The consolidation procedure for producing this material included a 9:1 extrusion at 340°C followed by a 16:1 extrusion at 400°C, utilizing RS powders which have also been characterized utilizing electron microscopy.

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Anticollision lights for the supersonic transport (SST).

PsycEXTRA Dataset ◽

10.1037/e423472004-001 ◽

1970 ◽

Author(s):

S. J. Gerathewohl ◽

E. W. Morris ◽

J. A. Sirkis

Keyword(s):

Supersonic Transport

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Spillage Drag Measurement with Aid of CFD for Small Supersonic Transport

JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES ◽

10.2322/jjsass.65.235 ◽

2017 ◽

Vol 65 (6) ◽

pp. 235-242

Author(s):

Atsushi UENO ◽

Yoshikazu MAKINO ◽

Ryota TAKAYA ◽

Kazushige SATOU ◽

Hideo ISO ◽

...

Keyword(s):

Supersonic Transport ◽

Drag Measurement

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Sensitivity Study and Primary Boom Carpet Assessment for Conceptual Low Boom Supersonic Transport

AIAA Scitech 2021 Forum ◽

10.2514/6.2021-0608 ◽

2021 ◽

Author(s):

Hiroaki Ishikawa ◽

Atsushi Ueno ◽

Shinya Koganezawa ◽

Yoshikazu Makino ◽

Bernd Liebhardt ◽

...

Keyword(s):

Sensitivity Study ◽

Supersonic Transport

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Infrasound and the Avian Navigational Map

Journal of Navigation ◽

10.1017/s037346330100145x ◽

2001 ◽

Vol 54 (3) ◽

pp. 377-391 ◽

Cited By ~ 14

Author(s):

Jonathan T. Hagstrum

Keyword(s):

Shock Waves ◽

Magnetic Compass ◽

Experimental Results ◽

Supersonic Transport ◽

Atmospheric Processes ◽

Topographic Features ◽

Navigational Map ◽

The North ◽

North Eastern ◽

Eastern Usa

Birds can accurately navigate over hundreds to thousands of kilometres, and use celestial and magnetic compass senses to orient their flight. How birds determine their location in order to select the correct homeward bearing (map sense) remains controversial, and has been attributed to their olfactory or magnetic senses. Pigeons can hear infrasound down to 0·05 Hz, and an acoustic avian map is proposed consisting of infrasonic cues radiated from steep-sided topographic features. The source of these infrasonic signals is microseisms continuously generated by interfering oceanic waves. Atmospheric processes affecting the infrasonic map cues can explain perplexing experimental results from pigeon releases. Moreover, four recent disrupted pigeon races in Europe and the north-eastern USA intersected infrasonic shock waves from the Concorde supersonic transport. Having an acoustic map might also allow clock-shifted birds to test their homeward progress and select between their magnetic and solar compasses.

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