A multi-stage rocket refers to ___ . A.several rockets which are separated from each otherB.a single rocket with enough fuelC.the booster which is the biggest and can lift the whole rocket from the groundD.a rocket with several parts, and each of which can help to push the spaceship...
ON THE OPTIMIZATION OF TWO-STAGE ROCKETS, Equations useful in design studies are derived for determining the optimum weight distribution for two-stage tandem rockets for the case of different struc... M Goldsmith - 《Journal of Jet Propulsion》 被引量: 27发表: 1956年 General theory of ...
After hundred years improvement, rockets are popular weapons during Ming Dynasty (1368-1644). In this investigation, we shall review multi-tube and multi-stage rocket applied in the military purpose during Hsung and Ming Dynasty. The performance and configuration of these weapons are going to ...
Pournelle goes on to mention that multi stage rockets make rocket designers subconsciously think of spacecraft as "ammunition" instead of as "aircraft", that is,disposableas opposed toreusable. By using staging, the mass ratio of the rocket as a whole can be above 15, even though the mass ...
Structure of the 7 stage coilgun, the electromagnetic simulation, the mechanical model, and a picture of the constructed system. Full size image Cascading multi-stages requires careful timing of the current pulses. Therefore, a parameter sweep of the delay between the current pulses was carried out...
Jenkin also performed trade studies for GEO transfers that use a combined chemical-electric stage [58]. He used trajectory optimization to maximize GEO-insertion mass, and determined trends among various mission and system parameters, such as the elliptical orbit for the start of the EP phase, ...
1.multi-effect multi-stage (flash) vaporizer多效多级闪蒸蒸发器 2.Rockets with more than one stage are called step rockets.多于一级的火箭称为多级火箭。 3.Study on Grade Efficiency Mathematical Model of Multilevel Fluidization Classification Tower多级散式流态化精密分级塔分级模型的研究 4.multiflow ev...
(Thor: First Thunder v1 #3) Stark and Mr. Fantastic were able to call a meeting with Thor at the Fantastic Four's Baxter Building headquarters to advise him that his activities might cause tensions across the world stage with other countries trying to develop super-humans of their own as ...
A multi-stage design approach that uses a multiobjective genetic algorithm as the framework for optimization and multiobjective preference articulation, an... Valceres V.R. Silva a,Peter J. Fleming b,Jungiro Sugimoto c,... - 《Applied Soft Computing》 被引量: 52发表: 2008年 Robust design ...
The multi-line array infrared detection can complete the scanning detection in a large area in a short time with the characteristics of smart munition in the steady-state scanning stage. The method solves the disadvantages of wide scanning interval and low detection probability of single unit ...