Topic
Missile
About: Missile is a research topic. Over the lifetime, 12829 publications have been published within this topic receiving 94307 citations. The topic is also known as: guided missile & missiles.
Papers published on a yearly basis
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TL;DR: A new approach to the synthesis of longitudinal autopilots for missiles flying at high angle of attack regimes is presented, based on sliding mode control, and uses a combination of aerodynamic surfaces and reaction jet thrusters to achieve controllability beyond stall.
Abstract: A new approach to the synthesis of longitudinal autopilots for missiles flying at high angle of attack regimes is presented. The methodology is based on sliding mode control, and uses a combination of aerodynamic surfaces and reaction jet thrusters, to achieve controllability beyond stall. The autopilot is tested on a small section of the flight envelope consisting of a fast 180/spl deg/ heading reversal in the vertical plane, which requires robustness with respect to uncertainties in the system's dynamics induced by large variations in dynamic pressure and aerodynamic coefficients. Nonlinear simulation results show excellent performance and capabilities of the control system structure.
137 citations
01 Feb 1998
TL;DR: The fundamental purpose of Missile Datcom is to provide an aerodynamic design tool which has the predictive accuracy suitable for preliminary design, and the capability for the user to easily substitute methods to fit specific applications.
Abstract: : THIS REPORT IS A USER'S MANUAL FOR THE 1997 FORTRAN 90 REVISION OF THE MISSILE DATCOM COMPUTER PROGRAM. THIS SUPERSEDES WL-TR-93-3043. In missile preliminary design it is necessary to quickly and economically estimate the aerodynamics of a wide variety of missile configuration designs. Since the ultimate shape and aerodynamic performance are so dependent upon the subsystems utilized, such as payload size, propulsion system selection and launch mechanism, the designer must be capable of predicting a wide variety of configurations accurately. The fundamental purpose of Missile Datcom is to provide an aerodynamic design tool which has the predictive accuracy suitable for preliminary design, and the capability for the user to easily substitute methods to fit specific applications.
137 citations
Book•
01 Aug 2001
TL;DR: A key driver in the design process is aerodynamic consideration in the development process Aerodynamic considerations in tactical missile design Propulsion Considerations in Tactical Missile Design Propulsion considerations in tactical Missile design Weight and flight performance consideration in tactical MIMO design Flight Performance Considerations and Launch Platform Integration Sizing Examples Development Process Summary and Lessons Learned References List of Acronyms/Symbols conversion factors Index
Abstract: Introduction / Key Drivers in the Design Process Aerodynamic Considerations in Tactical Missile Design Propulsion Considerations in Tactical Missile Design Weight Considerations in Tactical Missile Design Flight Performance Considerations in Tactical Missile Design Measures of Merit and Launch Platform Integration Sizing Examples Development Process Summary and Lessons Learned References List of Acronyms/Symbols Conversion Factors Index
136 citations
06 Oct 1997
TL;DR: In this article, an optical quadrant tracker is used to lock onto a visible light source located at the dock in the same manner as a Sidewinder air-to-air missile tracks its target in air.
Abstract: Missions in which an autonomous undersea vehicle docks with an underwater node for the purpose of battery recharging and/or data transfer greatly increase the scope of potential applications possible with UUVs. Robust and accurate vehicle guidance to a small, simple and reliable docking structure is a critical capability which must be developed in order to achieve this end. This paper describes a simple but highly effective underwater vehicle guidance scheme which is based upon an optical quadrant tracker which locks onto a visible light source located at the dock in the same manner as a Sidewinder air-to-air missile tracks its target in air. An optical terminal guidance system based upon this concept was developed by NRaD. Optical guidance and docking was demonstrated using two autonomous underwater vehicles: a SeaGrant Odyssey IIB and the NRaD Flying Plug. The optical docking system was demonstrated to be accurate and robust for vehicle terminal guidance during field operations and provided targeting accuracy on the order of 1 centimeter under real-world conditions, even in turbid bay water. Such a system is projected to provide reliable terminal vehicle guidance to an underwater dock from a maximum acquisition range of approximately 100 meters in typical continental shelf ocean water.
135 citations
TL;DR: A discussion of the process of numerical (digital) filtering is presented together with formulae for a particularly simple but effective design and the problem of trend type errors and their elimination by the inclusion of additional constraints on the filter weights is included.
Abstract: Abstract. A discussion of the process of numerical (digital) filtering is presented together with formulae for a particularly simple but effective design. The error is discussed in terms of the quantity ~(~, N) with k the normalized frequency and N the number of filter weights. Later empirieM design curves with e as a parameter are given. In addition, the effect of allowing slope discontinuities in the filter transfer function is noted. Next, the problem of trend type errors and their elimination by the inclusion of additional constraints on the filter weights is included. Designs for high-pass, band-pass and quadrature filters, with a comparison of two band-pass design approaches, are given. Specific applications are given to illustrate the effect of the filtering process as well as the various ways filters can be used in processing digital data.
131 citations