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WikiCards · Card list · Science cards · Bi-elliptic transfer
Uncommon card · Science
Bi-elliptic transfer, an Uncommon card
In astronautics and aerospace engineering, the bi-elliptic transfer is an orbital maneuver that moves a spacecraft from one orbit to another and may, in certain situations, require less delta-v than a Hohmann transfer maneuver.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 60
- DEF
- 36
- Power
- 96
- Wikipedia reads a year
- 18,000
Ranked #2,821 of the 3,000 cards of the base set by power (ATK + DEF).
Bi-elliptic transfer quiz: 3 questions
Three questions on the Bi-elliptic transfer card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
The bi-elliptic transfer ______ of two half-elliptic orbits.
Answer
consists. The bi-elliptic transfer consists of two half-elliptic orbits. From the Bi-elliptic transfer article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Louis Bachelier. Louis Bachelier 66 · Bi-elliptic transfer 60 · Mark W. Michael Unit 55 · List of Korean desserts 52 ATK in WikiCards.
Which of these Wikipedia articles is read the most in a year?
Answer
Analogue electronics. Analogue electronics 23,000 · Bi-elliptic transfer 18,000 · Biostratigraphy 9,800 · Mark W. Michael Unit 7,100 Wikipedia reads over a year.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- The bi-elliptic transfer consists of two half-elliptic orbits.
- From the initial orbit, a first burn expends delta-v to boost the spacecraft into the first transfer orbit with an apoapsis at some point r b away from the central body.
- At this point a second burn sends the spacecraft into the second elliptical orbit with periapsis at the radius of the final desired orbit, where a third burn is performed, injecting the spacecraft into the desired orbit.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Bi-elliptic transfer article was read about 18,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 60 and blocks with 36: each hit it takes is cut by 14 %.
How to get Bi-elliptic transfer
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
More Science cards
Cards close in power
The cards just above and just below Bi-elliptic transfer in the power ranking, all domains together.
- Louis BachelierUncommon · Science · ATK 66 DEF 30
- List of Korean dessertsUncommon · Society · ATK 52 DEF 44
- AmphiphileUncommon · Science · ATK 59 DEF 37
- Kacheguda railway stationUncommon · Society · ATK 54 DEF 42
- Special Night SquadsUncommon · History · ATK 58 DEF 38
- Talia LugacyUncommon · Arts · ATK 57 DEF 40
Card lists
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Credits
Text : Wikipedia, Bi-elliptic transfer (revision), CC BY-SA 4.0. Photo : AndrewBuck, CC BY-SA 4.0, Wikimedia Commons.
