delta-v

Scale back the two stage partly cryogenic, partly hypergolic Altair to a single stage, all hypergolic, refuelable and reusable cis-lunar shuttle with 2-3 km/s total delta-v.

Why Some Say the Moon? - NASA Watch 2009

Establishing the initial infrastructure there is cheaper than doing it on the lunar surface, because of the lower delta-v.

Why Some Say the Moon? - NASA Watch 2009

If the delta-v isn't that bad, we could build a martian space station before any surface operations.

Back to the Moon We Go - NASA Watch 2009

With regard to other objectives, similar delta-v requirements and modified lunar equipment should be sufficient to fit an NEO encounter mission or two into the manifest.

Moon Outpost or Bust - NASA Watch 2009

If a tug had a very high delta-v, so that it could change a sat's inclination, than you could bring sats to the ISS.

Back to the Moon We Go - NASA Watch 2009

Hopefully, enough delta-v would be available for the Orion to push the PTM back to Earth for disposal into the atmosphere or we would end up with lots of empty LOX/LCH4 tanks floating around in LLO.

A Constellation Alternative you Might Never have Seen - NASA Watch 2009

If they were to develop a space-rated nuclear reactor, they would have all the pieces they need to build large ships on orbit with enough delta-v to go pretty much ANYWHERE.

"Moon = Stupid": Its The Same Tired Rhetoric From Bob Zubrin - NASA Watch 2009

For every space mission, manned or unmanned, transportation cost is a fraction of 10 to 30 %, depending on the delta-v requirements (the "distance" to be covered).

Would You Bring Back NGLT-or SLI? - NASA Watch 2009

Nevermind delta-v; you can teleoperate very complicated machines, with hands, on the Moon.

"Moon = Stupid": Its The Same Tired Rhetoric From Bob Zubrin - NASA Watch 2009

You'd lose a hefty chunk of delta-v and end up in a high elliptical orbit.

Trying To Spin The Facts - NASA Watch 2009