Precision Measurement of Supersonic Rocket Sled Velocity-Part II

Beutler, Frederick J.; Rauch, L. L.

doi:10.2514/8.7463

Cited by 2 publications

(3 citation statements)

References 2 publications

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“…The rocket sled which loaded guided bomb motions on the specific high-precision track at a specific speed and acceleration powered by rocket engine [1,2], many data of the guided bomb can be obtained by rocket sled test, such as the anti-overload capability, structural strength, charge stability, explosion point accuracy, penetration capability, fuze control and damage efficiency. Rocket sled test has become a common way of evaluating the performance of weapon terminal effects.…”

Section: Introductionmentioning

confidence: 99%

Terminal Ballistic Design of Guided Bomb in Rocket Sled Test

Zhao

Liu

Yang

2023

J. Phys.: Conf. Ser.

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In order to meet the impact attack angle demand of 3°±1° of the guided bomb in the terminal effect rocket sled test, the dual-track rocket sled was designed as the research object, based on the simulation analysis of bomb-sled separation and factors that interfere with impact attack angle of the guided bomb. The terminal ballistic scheme was created with the guided bomb was preset to 2° and through 3m straight track, 6m curved track with a radius of 40m, 3m free flight, and the impact attack angle would be within the range of 2.12°~2.72°. In the test, impact attack angle of the guided bomb was 2.2°, which verifies the correctness of the design method.

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Section: Introductionmentioning

confidence: 99%

Terminal Ballistic Design of Guided Bomb in Rocket Sled Test

Zhao

Liu

Yang

2023

J. Phys.: Conf. Ser.

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“…As shown in Fig 1, a U-shaped (or horse-shoe) magnet is mounted on the sled and inductive pickups are fixed along the rail track at 10 m separation from one another. Although use of inductive pickups for measurement of sled velocity was reported more than 50 years ago 7,8 , but even now the interest in these systems continues to grow. This is mainly because of the fact that the network of magneto-inductive sensors can be installed over distances of several kilometres and yet they obtain large signals without any excitation or signal conditioning and the sensor can be fabricated by user.…”

Section: Introductionmentioning

confidence: 99%

“…It has bearing on our understanding of the way emf is induced. The discussion goes on from old papers [7][8][9] to the current papers 3,4 . The present work is not a work on this theory but being experimental outcome of a practical application wherein simple modifications enhance the capability and will help studies in magneto-kinematics, too.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Magneto-Inductive System for Rocket Sled Velocity Measurement Beyond Mach 1.5

Khosla¹,

Khanna²,

Sood³

2014

DSJ

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The rail track rocket sled (RTRS) national test facility at Terminal Ballistics Research Laboratory (TBRL) has been established to provide simulated flight environment for carrying out aero dynamic studies, terminal studies and kinematic studies of variety of test articles. The sled velocity is a critical parameter in evaluation trials. This velocity is also used to ensure that the maximum speed and allowable g loading does not exceed the value which the test article will experience under free flight in air 1 . Overseas, the facilities have been set up to attain velocities ranging from sub-sonic to hypersonic 2 . The rocket sled at TBRL can be presently accelerated to travel along the rail track at velocities up to 500 m/s and capability is being built to increase velocity beyond 500 m/s. Signals acquired from existing magneto-inductive arrangement have been analysed in the present work. The experiments indicate that with increase in velocity the rate of change of flux increases, the amplitude of induced emf also increases but terminal voltage decreases and shape of the acquired pulse gets distorted. The parameters of magneto-inductive pick up have been modified in such a way that there is improvement in amplitude and shape of the received pulse with increase in velocity. The improved signals have been analysed and simulation results validated with feasible experiments. This paper also discusses issues, challenges and proposes recommendations in improving the sensor for measurement of velocity beyond Mach 1.5. It has been found that it is prudent to reduce the inductance by reducing the number of turns and changing the core from soft iron core to air core which will improve the response of inductive pick up coil at high velocity.

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Precision Measurement of Supersonic Rocket Sled Velocity-Part II

Cited by 2 publications

References 2 publications

Terminal Ballistic Design of Guided Bomb in Rocket Sled Test

Terminal Ballistic Design of Guided Bomb in Rocket Sled Test

Analysis of Magneto-Inductive System for Rocket Sled Velocity Measurement Beyond Mach 1.5

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