Investigation on the Designing of the Metal Diaphragm in Pulse Solid Rockets

2016 ◽  
Vol 53 (1) ◽  
pp. 178-183 ◽  
Author(s):  
Wang Chunguang ◽  
Ren Quanbin ◽  
Tian Weiping
Keyword(s):  
Solid Rockets ◽  
Metal Diaphragm

Flight Research of an Aerospike Nozzle Using High Power Solid Rockets

2005 ◽  
Author(s):  
Trong Bui ◽  
James Murray ◽  
Charles Rogers ◽  
Scott Bartel ◽  
Anthony Cesaroni ◽  
...  
Keyword(s):  
High Power ◽  
Solid Rockets ◽  
Aerospike Nozzle

A Study of Energy Requirements for Electric Discharge Metal Forming

1964 ◽  
Vol 86 (2) ◽  
pp. 127-132
Author(s):  
R. L. Kegg
Keyword(s):  
Sheet Metal ◽  
Experimental Research ◽  
Electric Discharge ◽  
Research Program ◽  
Metal Forming ◽  
Explosion Energy ◽  
Energy Requirements ◽  
Maximum Deflection ◽  
Forming Process ◽  
Metal Diaphragm

A discussion of the fundamentals of the process of underwater electric discharge forming of metals is presented. The deformation of a sheet-metal diaphragm blast gauge is used as a measure of the amount of forming achievable in an experimental research program aimed at determining the effects of major variables on the performance of the electric discharge forming process. The behavior of the diaphragm gauge during forming is analyzed and an equation derived for predicting its maximum deflection when exposed to a given explosion. The predicted dependence of gauge deflection on gauge diameter, thickness, strength and density, and on explosion energy and standoff distance is confirmed by experiment. The application of these results to other forming operations is discussed.

scholarly journals Electrostatic Analyses for a System Constituted by an Insulating Disk Whose One Plane Surface is Charged and Which is Backed by a Concentric Earthed Metal Disk Smaller Than the Insulating Disk Itself and an Earthed Sphere Approaching the Charged Surface of the Insulating Disk, and Its Application to the Case of a Typical Oxygen Regulator

2019 ◽  
Author(s):  
Nirmalya Basu
Keyword(s):  
Electric Field ◽  
Plane Surface ◽  
Dust Particles ◽  
Charged Dust ◽  
Potential Candidate ◽  
Charged Surface ◽  
Electrostatic Discharges ◽  
Valve Stem ◽  
Metal Disk ◽  
Metal Diaphragm

There is a proposition that the possible occurrence of electrostatic discharges inside an oxygen regulator between charged insulating components, such as diaphragms, and earthed metal components, such as the valve stem, could be a potential candidate responsible for oxygen regulator fires. In this paper, the electric field which might be produced at the tip of the valve stem due to charge produced on the diaphragm of a typical oxygen regulator by deposition of charged dust particles or by their impact on the diaphragm or both has been evaluated. The diaphragm, in many cases, is backed partially by a concentric earthed metal disk. The diaphragm has been modelled as an insulating disk. The tip of the valve stem has been modelled as an earthed sphere which is very small compared to the insulating disk and the backing earthed metal disk. An analytical expression for the electric field produced at the point of the sphere nearest to the charged surface of the insulator has been derived. Our expression takes into account not only the effect of the charge on the insulating disk, but also that due to the presence of the backing earthed metal disk. Results for the magnitude of this electric field have been computed for the case of a sample oxygen regulator. An expression for the critical charge density on the surface of the insulating disk has been derived, and its value has been obtained for the case of our sample oxygen regulator. The electric field inside the non-metal diaphragm has also been evaluated. It appears from our analyses that there is a possibility that an electrostatic discharge might occur inside an oxygen regulator, and with an enriched-oxygen atmosphere being present there, such a discharge could also lead to a fire incident.

30 kW metal diaphragm pressure wave generator

2014 ◽  
Author(s):  
A. Caughley ◽  
P. Branje ◽  
T. Klok
Keyword(s):  
Pressure Wave ◽  
Wave Generator ◽  
Metal Diaphragm

scholarly journals On the acoustic disturbances produced by small bodies in plane waves transmitted through water, with special reference to the single-plate direction finder

1921 ◽  
Vol 100 (704) ◽  
pp. 261-288
Keyword(s):  
Special Reference ◽  
Plane Waves ◽  
Maximum Amplitude ◽  
Sound Waves ◽  
Small Bodies ◽  
Acoustic Disturbances ◽  
Sense Of Direction ◽  
Single Plate ◽  
Direction Finder ◽  
Metal Diaphragm

The experiments to be described were carried out for the Board of Invention and Research, under the direction of Sir William Bragg, between October 1916 and February 1917, on the Cullaloe Reservoir, near Aberdour, Fifeshire, and are now published with the permission of the Admiralty. A form of directional hydrophone has already been described by Sir William Bragg. It consists of a metal diaphragm, A, about four inches in diameter, mounted in a heavy ring, B, and open to the water on both sides ( vide Chart 9). In the centre of the diaphragm is a small metal box, C, carrying a carbon granule microphone of the button type. The microphone is connected into an ordinary telephone circuit. If the instrument is rotated about a vertical diameter in water through which sound waves are passing the sound heard in the receivers passes through a number of maxima and minima. When the diaphragm is turned “edge-on” to the source of sound it is obvious that the pressure pulses will reach the two faces of the diaphragm symmetrically and the diaphragm will fail to vibrate. As, however, either face is turned toward the source this symmetry ceases to exist and the diaphragm is thrown into vibration, which reaches a maximum amplitude when the instrument is “broad-side” on to the source. The instrument, therefore, indicates the line of propagation of the sound, but owing to the existence of two positions of maximum or minimum its indications are ambiguous as regards the sense of direction.

Dynamic Responses of Solid Rockets during Rapid Pressure Change

1973 ◽  
Vol 10 (2) ◽  
pp. 137-142 ◽  
Author(s):  
S. L. TURK ◽  
R. A. BATTISTA ◽  
K. K. KUO ◽  
L. H. CAVENY ◽  
M. SUMMERFIELD
Keyword(s):  
Pressure Change ◽  
Dynamic Responses ◽  
Solid Rockets ◽  
Rapid Pressure

Nonlinear Dynamic Combustion in Solid Rockets: L* Effects

2001 ◽  
Vol 17 (4) ◽  
pp. 909-918 ◽  
Author(s):  
K. C. Tang ◽  
M. Q. Brewster
Keyword(s):  
Nonlinear Dynamic ◽  
Solid Rockets ◽  
Dynamic Combustion

Development of 10 inch Diameter Titanium Rolling Metal Diaphragm Tank for Green Propellant

2017 ◽  
Author(s):  
Harry A. Conomos ◽  
Christopher G. Alongi ◽  
Jeffrey Moore ◽  
Jackie Yager ◽  
Richard Goddard ◽  
...  
Keyword(s):  
Green Propellant ◽  
Metal Diaphragm

A novel use of a telescope to photograph metal diaphragm openings.

AIAA Journal ◽  
1969 ◽  
Vol 7 (6) ◽  
pp. 1209-1211 ◽  
Author(s):  
DAH YU CHENG ◽  
ROBERT E. DANNENBERG ◽  
WALTER E. STEPHENS
Keyword(s):  
Metal Diaphragm
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