This report covers work done on performance analysis of a 5 inch, 54caliber gun-launched guided projectile with solid fuel ramjet (SFRJ).A computer program (TRAJET) was developed. The program contains ramjetand trajectory analysis. The ramjet part considers conical shock wave losses, -inlet boundary layer losses, normal shock losses, subsonic diffuser recovery,expansion into combustor losses, heat losses at the combustor and nozzle lossesA flat earth trajectory with drag and thrust was donsidered. The various drag coefficients which were considered are: cowl drag coefficient, skin dragcoefficient, wing (or fin) wave drag coefficient and wing (or fin) frictiondrag coefficient. Base drag is assumed to be zero due to the jet from ramjetnozzle.It was found that the cowl drag coefficient has a major influence on theresults. Therefore, a separate program (AERO) was developed to calculate thisparameter.The 5"/54 solid fuel ramjet has a capability to produce fuel specificimpulse in the order of 400 - 900 sec. depending mostly on the flight altitude,The thrust coefficient varies in the range of 0.3 ± 0.1 depending on theinternal areas.A range in the order of 50 miles can be achieved with the ramjetoperation compared to only 13 miles achieved by the conventional projectile.At low-altitude launch, a range of over 18 ronles can be reached in Air-DefenseScenario. The ramjet propelled projectile reaches the ranges mentioned aboveat high Mach numbers (Mg >. 1.8). It is, therefore, clear that the ramjetconcept provides significant improvement and has an Anti-Ship MissileDefense (ASMD) capability.
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机译：（54）标题：具有硅酸盐涂层的固体颗粒（54）：FESTKoRPERPARTKEL MIT SILKATBESCHICHTUNG（57）摘要：本发明涉及一种具有二氧化硅涂层的固体颗粒的生产方法，其包括以下步骤：将固体颗粒分散为将其涂覆在水性介质中以产生固体颗粒分散体，通过缓冲系统调节固体颗粒分散体的pH以产生缓冲的固体颗粒分散体，并向缓冲的固体颗粒分散体中添加碱性硅酸盐溶液以形成二氧化硅在涂覆期间将其涂覆在固体颗粒上，其中选择缓冲体系和碱性硅酸盐溶液的量，使得在添加碱性硅酸盐溶液之前和在添加完成之后，缓冲的固体颗粒分散体的pH至少为7.0。碱性硅酸盐溶液的最大含量为11.0。固体颗粒优选是无机固体，特别是
