例句與造句

1. This translates into shorter mission transit times for future astronauts or larger payload fractions.
2. These advantages were expected to overcome the disadvantages of small specific impulse and payload fraction.
3. Another related measure is the payload fraction, which is the fraction of initial weight that is payload.
4. This change meant that the relatively low payload fraction of the hovercraft was greatly increased, theoretically doubling it.
5. The first stage booster is made of advanced carbon composite materials to provide high payload fraction ( mass fraction ).
6. It's difficult to find payload fraction in a sentence. 用payload fraction造句挺難的
7. For spacecraft the payload fraction is often less than 1 %, while the useful load fraction is perhaps 90 %.
8. This change meant that the relatively low payload fraction of the hovercraft was greatly increased, as much as doubling it.
9. The fraction of payload to the total liftoff weight of the air or spacecraft is known as the " payload fraction ".
10. One drawback of spaceplanes is that they have a significantly smaller payload fraction than a ballistic design with the same takeoff weight.
11. In contrast, the SABRE engine permits a much slower, shallower climb, breathing air and using its wings to support the vehicle therefore increasing payload fraction.
12. It utilizes the FRE-1 / FRE-2 aerospike engines and a lightweight carbon composite structure to reduce launch weight, resulting in improved payload fraction.
13. On the other hand, LACE-like mass fraction over pure rockets ( even multistage rockets ) sufficiently to hold out the possibility of full reusability with better payload fraction.
14. Using all of the advances of the Brabazon meant the Britannia had the best payload fraction of any aircraft up to that time, and it kept that record for a number of years.
15. Mission planning therefore frequently involves adjusting and choosing the propulsion system so as to minimise the total cost of the project, and can involve trading off launch costs and mission duration against payload fraction.
16. Without the benefit of staging, SSTO designs are typically designed for mass fractions around 0.9 . Staging increases the payload fraction, which is one of the reasons SSTO's appear difficult to build.
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