A Comparison of Different Guidance Schemes for a Direct Fire Rocket with a Pulse Jet Control Mechanism

Jitpraphai, Thanat; Burchett, Bradley T.; Costello, Mark J.

doi:10.21236/ada401519

Cited by 9 publications

(8 citation statements)

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“…A guided interceptor is different than previous work [8], [11] on pulse-jet-controlled projectiles in that the target is continually changing. When the target is stationary, the desired impact point remains constant, and linear theory is used to determine the error in impact.…”

Section: A Nearest Impact Predictormentioning

confidence: 91%

“…Suitable control mechanisms for this purpose are lateral pulse jets consisting of a ring of small one-time thrusters. Pulse jets have been shown effective in reducing dispersion of direct-fire rockets by Jitpraphai and Costello, and later, Jitpraphai et al compared proportional, parabolic and proportional, and trajectory tracking navigation using pulse jets [7], [8]. A preliminary investigation of pulse jets on a spinning projectile using proportional navigation and a flat-fire assumption was done by Calise [9].…”

Section: Introductionmentioning

confidence: 99%

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Predictive Guidance of a Projectile for Hit-to-Kill Interception

Hahn

Frederick

Slegers

2009

IEEE Trans. Contr. Syst. Technol.

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In this paper, a predictive guidance algorithm is developed for a spin-stabilized hit-to-kill guided projectile. The projectile is used as an interceptor against rockets, mortar, and artillery. Guidance is based on a new rapid trajectory prediction algorithm for projectiles fired at high quadrant elevations. The interceptor uses lateral pulse jets located near the mass center for control. High spin rates require additional guidance compensation for gyroscopic effects when compared to a fin-stabilized projectile. The probability of kill (PK) is evaluated based on typical gun pointing errors, roll angle uncertainty, and target acquisition errors. It is shown that guided interceptors can achieve a 90% PK by using as few as 5 projectiles in the presence of roll, gun pointing, and target errors. It is also shown that, despite sensitivity to errors in gun pointing and target errors, the predictive guidance system is able to achieve an acceptable PK. For a spin-stabilized interceptor, estimated-roll orientation errors may become large. Simulations are performed for errors in the estimated roll, and it is demonstrated that roll does not need to be precisely known for a successful interception.

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Section: A Nearest Impact Predictormentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Predictive Guidance of a Projectile for Hit-to-Kill Interception

Hahn

Frederick

Slegers

2009

IEEE Trans. Contr. Syst. Technol.

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“…The topic of the dispersion reduction by using lateral pulse jets has been studied in several papers (1)(2)(3)(4)(5) . The comparison of different guidance laws (i.e.…”

Section: Introductionmentioning

confidence: 99%

“…The comparison of different guidance laws (i.e. proportional navigation, parabolic and proportional navigation, and trajectory tracking) for a direct fire rocket with a pulse jet control mechanism was presented by Jitpraphai et al (1) When the number of individual pulse jets is small, the trajectory tracking law provides superior dispersion reduction. For the case of a large number of pulse jets, the parabolic and proportional navigation guidance law is slightly better than the trajectory tracking control law.…”

Section: Introductionmentioning

confidence: 99%

Pulse-frequency modulated guidance laws for a mortar missile with a pulse jet control mechanism

et al. 2015

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The impact point dispersion of mortar missiles can be drastically reduced with a control ring of lateral pulse jets located around the centre of gravity and a homing head to measure or to derive estimates of appropriate missile-target states, e.g. the line-of-sight rates. A simulation model including a missile as a six-degree-of-freedom vehicle, a jet pulse flight control system, and a relative missile-to-target motion was used for the comparison of four guidance laws i.e. proportional navigation guidance, augmented proportional navigation, augmented proportional navigation with rendezvous, and adaptive sliding-mode guidance. This paper focuses on the efficiency of pulse jet control on miss distance, and thus makes the assumption that sensor measurements and the guidance states required to apply each of the guidance laws are perfectly known. Proportional navigation and the adaptive sliding mode guidance exhibit a large miss distance due to limited control authority. Augmented proportional navigation is slightly better than augmented propor-

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“…The other guidance laws applied to a direct fire rocket such as proportional navigation and parabolic and proportional navigation guidance have been studied in Ref. 4. A low cost guidance for a multiple launch rocket system was described in Ref.…”

mentioning

confidence: 99%