Author: R. W. MilliganPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Two Dimensional Gaseous Secondary Injection Study of Rocket Thrust Vector Control
Author: R. W. MilliganA STUDY OF ROCKET THRUST CONTROL BY GAS INJECTION.
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 123
Book Description
A theoretical and experimental investigation of thrust control by secondary gas injection was completed. Thrust control is treated from the two aspects of thrust modulation and vector control. The thrust modulation study is concerned with the use of injection as a means of throttling the main nozzle flow. The performance (flow throttling and thrust) of a variety of secondary injection configurations was measured with a low pressure-ratio, axially symmetric nozzle as well as a high pressure-ratio, two-dimensional nozzle. The flow throttling results agree with an anlysis based on three flow models and the schlieren photographs (from the two-dimensional tests) show that all three types of flow occur. The vector control study concerns asymmetric secondary gas injection as a means of controlling the direction of the thrust vector.
Thrust Vector Control of Rocket Engines by Secondary Injection
Author: R. C. ParkinsonRocket Thrust Vector Control by Secondary Gas Injection
Author: C. K. LeeVortex Flow and Erosion in Rocket Nozzles Due to Warm-gas Injection for Thrust Vector Control
Author: G. Louis SmithTechnical Abstract Bulletin
Author: Defense Documentation Center (U.S.)Publisher:
ISBN:
Category : Science
Languages : en
Pages : 784
Book Description
Chamber Gas Secondary Injection Thrust Vector Control for High Performance Solid Rocket Motors
Author: J. R. StevensPublisher:
ISBN:
Category :
Languages : en
Pages : 60
Book Description
The primary objectives of this program are (1) to demonstrate a thrust vector control (TVC) system optimized for overall propulsion efficiency for advanced upper-stage ICBM rocket motors, and (2) to provide the data and technology necessary for design of future TVC systems. The proposed TVC system is comprised of four poppet valves mounted 90 deg apart on a submerged nozzle. Three nonactuated versions of the submerged hot gas valve were evaluated by static testing. The primary difference between the three designs was the length of the dam enshrouding the centerbody and pintle in the subsonic portion of the valve. (Author).
A Critical Review of Analytical Methods for Estimating Control Forces Produced by Secondary Injection
Author: Michael J WerlePublisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 124
Book Description
The problem discussed is that of theoretically predicting the normal force induced in the boundary layer separation region immediately ahead of a secondary injection port. Attention was limited to the two-dimensional problem of sonic or supersonic normal injection into supersonic or hypersonic mainstreams. A critical review of available experimental studies was conducted in order to isolate those data best representing a two-dimensional state. The resulting compilation of experimental results was thereafter employed as a basis of comparison for available theoretical and empirical flow models. As a result it was found that analytical means are only capable of rough quantitative estimates of control jet effectiveness and that a more detailed flow model is needed to further explain observed phenomenon. The basic features of such a model are formulated and its conceptual validity demonstrated through comparison with experimental results. Problem areas requiring further research are also discussed in detail. (Author).
Hot Gas Secondary Injection Thrust Vector Control Demonstration Program
Author: Carver G. KennedyPublisher:
ISBN:
Category :
Languages : en
Pages : 99
Book Description
This program was established to design, develop, and demonstrate a hot gas secondary injection thrust vector control system (HGSITVC) for large solid propellant rocket motors. Phase I of the program was the design, analysis, and optimization of a 156 in. diameter motor HGSITVC system. The data from this baseline design was used to design four test pintle valves for demonstration on 65 in. diameter test motors. Phase II consisted of designing a four valve, 120 in. diameter motor HGSITVC system using the basic designs and design data developed under Phase I. The 120 in. diameter test motor demonstrated four full scale 156 in. diameter motor pintle valves. The 156 in. diameter motor uses 16 pintle valves of the design tested. (Author).
Author: J. D. C. Coy