Space Systems Laboratory Massachusetts Institute of Technology Optimization of Separated Spacecraft Interferometer Trajectories in the Absence of A Gravity-Well Optimization of Separated Spacecraft Optimization of Separated Spacecraft Interferometer Trajectories in the Interferometer Trajectories in the Absence of A Gravity Absence of A Gravity-Well Edmund M. Edmund M. Kong Prof David W. Miller David W. Miller

1 Introduction Electrostatic thrusters (“ion engines”) are the best developed type of electric propulsion device, dating in conception to the ‘50’s,(1) and having been demonstrated in space in 1964 on a suborbital flight of the SERT I spacecraft(2). The early history

Motivation DESCRIBE the three distinct components of motivation. IDENTIFY the need levels in Maslow's hierarchy. EXPLAIN Alderfer's ERG Theory. COMPARE motivators and hygiene factors DISCUSS the factors that reflect a high need for achievement. DEFINE the key terms in expectancy theory. DISTINGUISH between inputs and outputs in equity theory

The only practical way to accelerate something in free space is by reaction. The idea is the same as in air breathing propulsion (to push something backwards) but in rockets the “something” must be inside and is lost. Here is a revealing derivation of the thrust equation for vacuum:

The result appears to be trivial, but it is not. Notice that the “velocity increment” ∆V is actually equal to the decrease in orbital velocity. The rocket is pushing forward, but the velocity is decreasing. This is because in a r-2 force field, the kinetic energy is equal in magnitude but of the opposite sign

Across 1. A metal used in batteries but not pencils 2. This element is found in the most odorous compounds 3. Its aqueous 2+ ion has a characteristic blue color 4. Bananas are rich in its cation 5. The noble gas with the second-lowest densi 6. Its hydride is the most common basic gas

Related Information 1. 1. Opinion polls A survey of porential voters to determine their mood and attempt to determine the outcome of the election. Opinion polls started to play a part in American polities in the 1930s when the Gallup poll predicted the election of President Roosevelt in 1936

Ellipsis I In compound sentences 电压的单位是伏特,电流的是安培。 Voltage is measured in volts and current in amperes. 地球吸引月球,月球也吸引地球 The earth attracts the moon and the moon the earth

Introduction The consumption-based model as a complete answer to most asset pricing question in principle, does not work well in practice; This observation motivates effects to tie the discount factor m to other data; Linear factor pricing models are most popular models of this sort in finance; They dominate discrete-time empirical work

To read and find out the purpose of this chart To examine the theme and figure out the relations in the chart To pay attention to the notes in the chart II. What we should pay special attention to Limit of time 2. Focus of the chart III. What we will write in the composition Catch the trend, the survey and some