More Than Honor

The original hyper drive was a man-killer. The casualty figures over the first fifty years of hyper travel were daunting. Worse, vessels which were destroyed were lost with all hands, which left no record of their fates and thus offered no clue as to the causes of their destruction. Eventually, however, it was determined that most had probably been lost to one of two phenomena, which became known as "grav shear" (see below) and "dimensional shear" (violent energy turbulence separating hyper bands from one another). Once this was recognized and the higher hyper bands were declared off limits, losses due to dimensional shear ended, but grav shear remained a highly dangerous and essentially unpredictable phenomenon for the next five centuries. Despite that unpredictability and continuing (though lower) loss rates, hyperships' FTL capabilities made them the vessel of choice for survey duties and other low-manpower requirement tasks. Crews of highly paid specialists willing to accept risky employment conditions were enlisted for survey work and for the early mail packets, but the loss rate continued to make any sort of interstellar bulk commerce impractical and insured that most colonists still moved aboard the much slower but more survivable cryogenic ships. As a consequence, the rate of advance of colonization did not increase terribly significantly during the period 725-1273 pd, although the ability to pick suitable targets for colonization (courtesy of the FTL survey crews) improved enormously.

The best speed possible in hyper prior to 1273 pd was about fifty times light-speed, a major plus over light-speed vessels but still too slow to tie distant stars together into any sort of interstellar community. It was sufficient to allow establishment of the oldest of the currently existing interstellar polities, the Solarian League, consisting of the oldest colony worlds within approximately ninety light-years of Sol.

The major problem limiting hyper speeds was that simply getting into hyper did not create a propulsive effect. Indeed, the initial translation into hyper was a complex energy transfer which reduced a starship's velocity by "bleeding off" momentum. In effect, a translating hypership lost approximately 92% of its normal-space velocity when entering hyper. This had unfortunate consequences in terms of reaction mass requirements, particularly since the fact that hydrogen catcher fields were inoperable in hyper meant one could not replenish one's reaction mass underway. On the other hand, the velocity bleed effect applied equally regardless of the direction of the translation (that is, one lost 92% of one's velocity whether one was entering hyper-space from normal-space or normal-space from hyper-space), which meant that leaving hyper automatically decelerated one's vessel to a normal-space velocity only 08% of whatever its velocity had been in hyper-space. This tremendously reduced the amount of deceleration required at the far end of a hyper voyage and so made reaction drives at least workable.

Since .3 c(approx. 89,907.6 km./sec.) was the maximum velocity at which an "upward" translation into hyper-space could be made, the maximum initial velocity in hyper-space was .024 c(or 7,192.6 km./sec.). Making translation at speeds as high as .3 c was a rough experience and not particularly safe. The loss rate at .3 c was over 10%; dropping translation velocity to .23 c virtually eliminated ship losses in initial translation, and, since the difference in initial hyper velocity was less than 1,700 KPS, most captains routinely made translation at the lower speed. Even today, only military commanders in emergency conditions will make upward translation at .3 c. There is no safe upper speed on "downward" translations. That is, a ship may translate from hyper-space to normal-space at any hyper-space velocity without risking destruction. (Which is not to say that the crews enjoy the experience or that it does not impose enormous wear and tear on hyper generators.) Further, translation from one hyper band to a higher band (see below) may be made at any velocity up to and including .6 c. No vessel may exceed .6 c in hyper (.8 in normal-space) because radiation and particle shields ca

Once a vessel enters hyper, it is placed in what might be considered a compressed dimension which corresponds on a point-by-point basis to "normal-space" but places those points in much closer congruity. Hyper-space consists of multiple regions or layers—called "bands"—of associated but discrete dimensions. Dr. Radhakrishnan (who, after Adrie

In practical terms, this meant that for a ship in hyper, the distance between normal-space points was "shorter," which allowed the vessel to move between them using a standard reaction drive at sublight speeds to attain an effective FTL capability. Even in hyper, ships were not capable of true faster-than-light movement; the relatively closer proximity of points in normal-space simply gave the appearance of FTL travel, which meant that as long as a vessel was dependent on its reaction drive and could not reach the higher hyper bands, its maximum apparent speed was limited to approximately sixty-two times that which the same vessel could have attained in normal-space.

Navigation, communication, and observation all are rendered difficult by the nature of hyper-space. Formed by gravitational distortion, hyper-space itself acts as a focusing glass, producing a cascade effect of ever more tightly warped space. The laws of relativistic physics apply at any given point in that space, but as a hypothetical observer looks "outward" in hyper-space, his instruments show a rapidly increasing distortion. At ranges above about 20 LM (359,751,000 km.) that distortion becomes so pronounced that accurate observations are impossible. One says "about 20 LM" because, depending on local conditions, that range may vary up or down by as much as 12%—that is, from 17.6 LM (316,580,880 km.) to 22.4 LM (or 402,921,120 km.). A hypership thus travels at the center of a bubble of observation from 633,161,760 to 805,842,240 km. in diameter. Even within that sphere, observations and measurements can be highly suspect; in effect, the "bubble" may be thought of as the region in which an observer can tell something is out there and very roughly where. Exact, precise observations and measurements are all but impossible above ranges of 5,000,000 to 6,000,000 km., which would make navigational fixes impossible even if there were anything to take fixes on.

This seemed to rule out any practical use of hyper-space until the development of the first "hyper log" (known as the "HL" by spacers) in 731 pd. The HL is analogous to the inertial guidance units first developed on Old Earth in the 20th century ce. By combining the input from extremely acute sensor systems with known power inputs to a vessel's own propulsive systems and ru