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Wind Tunnel Test Of A Spinning Low Drag Projectile With Canted Bore Riders At Mach Numbers From 175 To 25
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Book Synopsis Wind-Tunnel Test of a Spinning, Low-Drag Projectile with Canted Bore Riders at Mach Numbers from 1.75 to 2.5 by :
Download or read book Wind-Tunnel Test of a Spinning, Low-Drag Projectile with Canted Bore Riders at Mach Numbers from 1.75 to 2.5 written by and published by . This book was released on 1974 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Test data are reported for a spin-stabilized, low-drag projectile with and without bore riders mounted at various angles of cant with respect to the shell axis. Wind-tunnel tests were performed with and without spin at four Mach numbers evenly spaced from 1.75 to 2.5; some of the resulting aerodynamic coefficients are plotted versus spin rate, angle of attack or Mach number. (Author).
Book Synopsis Wind-Tunnel Test of a Spinning, Low-Drag Projectile with Canted Bore Riders at Mach Numbers from 1.75 to 2.5 by : Klaus O. Opalka
Download or read book Wind-Tunnel Test of a Spinning, Low-Drag Projectile with Canted Bore Riders at Mach Numbers from 1.75 to 2.5 written by Klaus O. Opalka and published by . This book was released on 1974 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Test data are reported for a spin-stabilized, low-drag projectile with and without bore riders mounted at various angles of cant with respect to the shell axis. Wind-tunnel tests were performed with and without spin at four Mach numbers evenly spaced from 1.75 to 2.5; some of the resulting aerodynamic coefficients are plotted versus spin rate, angle of attack or Mach number. (Author).
Book Synopsis Free-flight Range Tests of Spinning Tubular Projectiles at Mach Numbers from 2.0 to 3.2 by : G. L. Winchenback
Download or read book Free-flight Range Tests of Spinning Tubular Projectiles at Mach Numbers from 2.0 to 3.2 written by G. L. Winchenback and published by . This book was released on 1979 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Wind Tunnel Tests on a Nonaxisymmetric Projectile Shape at Mach Numbers 2.5 to 6.0 by : L. D. Kayser
Download or read book Wind Tunnel Tests on a Nonaxisymmetric Projectile Shape at Mach Numbers 2.5 to 6.0 written by L. D. Kayser and published by . This book was released on 1983 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wing tunnel tests on spinning nonaxisymmetric projectile configurations at Mach numbers of 2.5 to 6.0 are reported. The projectile shapes are ogive- cylinder bodies which have been modified by machining three forward facing surfaces and three rearward facing surfaces on the projectile. The machined surfaces are twisted at a rate corresponding to a typical rifling twist. The forward facing surfaces produce a helical or corkscrew type effect and the rearward surfaces form a nonconical boattail and a triangular base. The objective of the test program was to study shapes which have improved stability characteristics which require less gyroscopic stabilization. A more slender, longer L/d projectile can then be flown which has lower drag and shorter time of flight to a moving target.
Book Synopsis Design for Control of Projectile Flight Characteristics by :
Download or read book Design for Control of Projectile Flight Characteristics written by and published by . This book was released on 1966 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Wind-Tunnel Drag Measurements of a Ball-Obturated Tubular Projectile by :
Download or read book Wind-Tunnel Drag Measurements of a Ball-Obturated Tubular Projectile written by and published by . This book was released on 1982 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drag measurements and Schlileren flow visulalizations have been obtained for a prototype ball-obturated tubular projectile. The test range included Mach numbers of 1.94, 2.88, and 4.00 and a full range of obturator positions was surveyed at each Mach number. The results indicate that with the ball partially open the projectile internal flow field is severely complicated by combined viscous and shock wave interactions. A large of the drag reduction due to ball opening is obtained during the final motion o the ball and the partially open condition may lead to drags above those of the standatrd projectile, particularly at the lower Mach numbers. With the ball closed, the projectile configuration is dominated by bluff-body drag on the ball itself may be estimated by the previously espoused theory. (Author).
Book Synopsis An Experimental Investigation of the Roll Rate of a Finned Projectile at Mach Numbers 1.5 and at Angles of Attack Up to 90 Deg by : James C. Uselton
Download or read book An Experimental Investigation of the Roll Rate of a Finned Projectile at Mach Numbers 1.5 and at Angles of Attack Up to 90 Deg written by James C. Uselton and published by . This book was released on 1972 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Free-spinning roll tests were conducted on a finned projectile model in the von Karman Facility (VKF) Supersonic Wind Tunnel (A). The tests were conducted at a Mach number of 1.50 and at a Reynolds number, based on model length, 2,200,000. Spin rate was obtained at angles of attack from 0 to 90 deg for fin cant angles of 0 and 2 deg. The zero cant angle fin configuration did not spin at any angle of attack. The spin rate for the 2-deg cant angle fin configuration decreased with angle of attack and had dual stable roll modes at some of the higher angles of attack. (Author).
Book Synopsis Wind Tunnel Tests on the H3P78, Power Law Elliptic Section Flared Projectile from Mach 2.5 to 4.0 by : D. M. Orchard
Download or read book Wind Tunnel Tests on the H3P78, Power Law Elliptic Section Flared Projectile from Mach 2.5 to 4.0 written by D. M. Orchard and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reynolds Number Effect on Drag of the Angled Arrow Projectile by : I. M. Nestingen
Download or read book Reynolds Number Effect on Drag of the Angled Arrow Projectile written by I. M. Nestingen and published by . This book was released on 1951 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the results of a series of shots fired in the NOL pressurized ballistics firing range to determine the effect of Reynolds number on drag of the Angled Arrow Projectile at Mach numbers of 1.86 and 2.87. Drag values were determined for a Reynolds number variation of nine million. The results obtained at M = 1.86 indicate an increase in drag coefficient of approximately 4.55 per cent for a change in Reynolds number from 2,000,000 to 11,000,000. At M - 2.87 an increase in drag coefficient of approximately 20 percent was obtained for a similar variation in Reynolds number. The drag values are in fair agreement with wind-tunnel tests and with the estimated free-flight values of the full-scale missile at high altitude.
Book Synopsis Wind Tunnel Measurements of the Magnus Induced Surface Pressures on a Spinning Artillery Projectile Model in the Transonic Speed Regime by : Miles C. Miller
Download or read book Wind Tunnel Measurements of the Magnus Induced Surface Pressures on a Spinning Artillery Projectile Model in the Transonic Speed Regime written by Miles C. Miller and published by . This book was released on 1986 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aerodynamic surface pressures on a spinning projectile were experimentally obtained during transonic wind tunnel tests employing a novel model design and instrumentation arrangement. A series of remotely controlled pressure taps located in the non-spinning inner portion of the wind tunnel model detected the surface pressures through vent holes in the spinning outer portion. Data were obtained at spin rates of 0 and 82 Hz for angles of attack of 0, 4, and 10 deg. Testing was conducted at a Mach number of 0.94 and Reynolds number of 4 million per foot. The results illustrate the large circumferential pressure variation over the boattail region as well as the nonlinear effect of the angle of attack. The integrated pressure data indicate not only the total Magnus force and moment coefficients for the model, but also the individual contributions of the various body components. Keywords: Magnus effect; Surface pressures; Wind tunnel test techniques.
Book Synopsis SUPERSONIC WIND TUNNEL TESTS OF SMALL CALIBER PROJECTILES: CAL. .50 API M23; CAL. 60 API T39; AND 20mm HEI M97 by : BALLISTIC RESEARCH LABS ABERDEEN PROVING GROUND MD.
Download or read book SUPERSONIC WIND TUNNEL TESTS OF SMALL CALIBER PROJECTILES: CAL. .50 API M23; CAL. 60 API T39; AND 20mm HEI M97 written by BALLISTIC RESEARCH LABS ABERDEEN PROVING GROUND MD. and published by . This book was released on 1949 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three component tests of models of small caliber projectiles (Cal. .50, Cal. .60, and 20mm) were conducted in the Aberdeen Wind Tunnels at a Mach Number of 1.72 to provide aerodynamic data at high angles of attack. These results are to be used for computing the forces and motion imparted to a projectile when fired from high-speed aircraft. All projectiles were aerodynamically unstable. The addition of rifling increased the fore drag coefficient with little effect on lift and moment curve slopes. The test results are presented in graphs of aerodynamic coefficients as a function of angles of attack. (Author).
Book Synopsis A Wind Tunnel Test of Symmetric Loads on Two Wing-body Combinations at Mach Numbers 4 and 7 by : Erik Larson
Download or read book A Wind Tunnel Test of Symmetric Loads on Two Wing-body Combinations at Mach Numbers 4 and 7 written by Erik Larson and published by . This book was released on 1975 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aerodynamics Analysis of Solid Fuel Ramjet Projectiles by :
Download or read book Aerodynamics Analysis of Solid Fuel Ramjet Projectiles written by and published by . This book was released on 1988 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aerodynamic characteristics of several Solid Fuel Ramjet (SFRJ) projectiles are estimated by a combination of the NSWC-Aeroprediction code and a post-processing analysis that account for the effects of inlet and the buttress threads. Comparison between predicted and measured normal-force curve slope for two SFRJ-SPINNER configurations show good agreement in one case and 18%-23% analytical under-prediction in the other. The agreement in center-of-pressure location is very good in both cases. The analysis explains the unstable flight of the 60mm SFRJ-FINNER Projectile, having original fins. The analysis predicts, for the projectile with extended fins, a static margin of 0.5 calibers at low supersonic Mach numbers, marginal stability as Mach number approaches 4.3 and instability at Mach numbers larger then 4.3. Wind-tunnel tests of this configuration show that the open inlet contributes more normal-force than accounted for in the analysis and that contribution of the fin set is slightly underpredicted by the NSWC code. The predicted normal-force curve slope is up to 11% smaller than experimentally obtained and the center-of-pressure location is in good agreement with test results. The experimentally obtained contribution of the buttress threads to the axial-force coefficient is in good agreement with the predicted value. No effect on the threads on the stability of the projectile was observed under the wind tunnel flow conditions.
Book Synopsis Engineering the Space Age - a Rocket Scientist Remembers by : Robert Brulle
Download or read book Engineering the Space Age - a Rocket Scientist Remembers written by Robert Brulle and published by Createspace Independent Publishing Platform. This book was released on 2012-08 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rarely is a reader exposed to such an extraordinary, multifaceted presentation of aerospace technology as Bob Brulle narrates in this book. After returning from duty as a combat fighter pilot in World War II, this Belgian immigrant developed a multitalented and innovative aerospace career path that addressed many of the aerospace professions. Along the way he forged a career in the aviation and space field that resulted in his participating in several of the most momentous aerospace achievements of the past century. He also expanded his education through hard work to a level at which he was qualified to teach graduate-level aerospace engineering courses. It is interesting to follow how the analysis and design techniques of aerospace vehicles progressed over the years, which incidentally reveals the large role that the computer played in making that possible. The story on the early Cape Canaveral operations was amusing and showed that enterprising innovations played a large role in a successful undertaking. Some of the projects described were a surprise, as I had never heard of them, like reading how a pencil-shaped missile was built that could fly and maneuver over an intercontinental distance at a high hypersonic velocity. He also described how American engineers and scientists fought the Cold War battle for technological supremacy on their desks and in their laboratories. The initiatives by which this enterprising engineer develops his technical approach to a project are very informative and offer the reader an insight into the workings of successful operations. He achieves an interesting behind-the-scenes look at how aerospace history is made by weaving in the historical significance of these projects as they are developed. As a former aeronautical engineer at the rapidly growing Mc- Donnell Aircraft Corporation, Bob gives us an interesting exposure to the importance of top management's relationship with the workforce in a successful company. "Mr. Mac" made it a point to make all his employees team members by frequent communication and friendly association.
Download or read book Extrusion written by Harold F. Giles Jr and published by William Andrew. This book was released on 2013-09-21 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of Extrusion is designed to aid operators, engineers, and managers in extrusion processing in quickly answering practical day-to-day questions. The first part of the book provides the fundamental principles, for operators and engineers, of polymeric materials extrusion processing in single and twin screw extruders. The next section covers advanced topics including troubleshooting, auxiliary equipment, and coextrusion for operators, engineers, and managers. The final part provides applications case studies in key areas for engineers such as compounding, blown film, extrusion blow molding, coating, foam, and reprocessing. This practical guide to extrusion brings together both equipment and materials processing aspects. It covers basic and advanced topics, for reference and training, in thermoplastics processing in the extruder. Detailed reference data are provided on such important operating conditions as temperatures, start-up procedures, shear rates, pressure drops, and safety. A practical guide to the selection, design and optimization of extrusion processes and equipment Designed to improve production efficiency and product quality Focuses on practical fault analysis and troubleshooting techniques
Book Synopsis Facing the Heat Barrier by : T. A. Heppenheimer
Download or read book Facing the Heat Barrier written by T. A. Heppenheimer and published by Government Printing Office. This book was released on 2009-08 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hypersonics is the study of flight at speeds where aerodynamic heating dominates the physics of the problem. It is an engineering science with close links to supersonics and engine design. Within this field, many of the most important results have been experimental. The principal facilities have been wind tunnels and related devices, which have produced flows with speeds up to orbital velocity. Why is this important? Hypersonics has had two major applications. The first has been to provide thermal protection during atmospheric reentry. Success in this enterprise has supported ballistic-missile nose cones, has returned strategic reconnaissance photos from orbit and astronauts from the Moon, and has even dropped an instrument package into the atmosphere of Jupiter. The second application has involved high-speed propulsion and has sought to develop the scramjet as an advanced airbreathing ramjet. Atmospheric entry today is fully mature as an engineering discipline, but work with its applications continues to reach for new achievements. Studies of scramjets still seek full success, in which such engines can accelerate a vehicle without the use of rockets. Hence, there is much to do in this area as well.
Book Synopsis Engineer in Charge by : James R. Hansen
Download or read book Engineer in Charge written by James R. Hansen and published by . This book was released on 1987 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt:
