After running external tank dry on schedule (resultant mixture-imbalance flame-out totaled main engines [Harris cringed, but reuse not contemplated in mission profile — and needed every drop]), we fired up orbital maneuvering system. Some time later Harris announced we had sufficient delta-V to reach geosynchronous orbit; shut down OMS. Everything had worked like clockwork.
We took care of final housekeeping details necessary to put Hale on hold for next three days; assumed belly-sunward attitude to keep heat off cargo bay fuel tank, opened bay doors…
And finally had time to breathe. Shed EMUs with relief. Grouped around windows, admiring beauty of Earth Seen From Orbit, pointing out familiar landmarks. Chatted animatedly a while thereafter, rehashing launch, generally unwinding from intense concentration involved.
Hard to say just when pendulum started back. But presently noticed three of us drifting around cabin, trying not to meet each other’s eyes. And could have cut silence with shovel.
Understandable, of course: Letdown following excitement of launch, coupled with knowledge that we had absolutely nothing to do during three days would take Hale to complete long outward parabola, together with trying not to think about what would happen within single day following mission’s completion, combined to lay pall on company.
All well on way toward satisfying wallow in melancholy by time Harris recognized own symptoms, those of others; roused himself sufficiently to call halt: “This will never do, people. I don’t like what’s happening here. If we keep this up for three days, we’ll all be in catatonic withdrawal when the time comes to do our jobs.”
Kyril blinked, looked around momentarily as if startled. Felt much same way myself. But, tending more toward assertiveness (i.e., spoiled brattiness) than gentle Russian, fought for my right to become zombie; snarled, “Leave me alone. I don’t feel like company right now.”
“Neither do I,” Harris replied sternly. “But I’m going to have it — and so are you.”
Harris doesn’t have to raise voice to make point; has Command Presence: lot like Daddy in that respect.
Already snapping out of incipient depression before properly finished resenting intrusion. Performed quick self-inventory; found Commander right as usual. Apologized for rude tone. Harris accepted with grace.
We turned to find Kyril grinning at us. “Shucks…” he teased; “chumps again, just when things getting engrossable. Was processed to grieve for absenting of popmaize and fellow random numerologist with whom to collate speculatings. Mutiny’s outcome providing abstruse handihatting. Absence of gravity outsetting size to broadness extant, but thinking my trove still on Commander.”
Corners of Harris’s mouth twitched; fixed me with penetrating eye, shook head imperceptibly. “Just don’t bet too much ‘trove’ on me,” he advised. “I’m getting too old to mix it up with anyone as young and flexible as Candy.”
Kyril’s grin broadened; appreciated self-deprecating humor: As if little girl could pose a challenge to tough old ex-Marine.
(But exchange left me regarding Harris with bemusement. Suddenly realized that, while no one had ever said anything to me on subject, neither had anyone ever mentioned my martial-arts ranking in Kyril’s presence. Russian obviously still in dark about nature of my strength — equally obvious: Harris preferred to keep it that way; apparently my capabilities Top Secret for time being where Russian concerned. Attitude seemed extreme, but respected unspoken wishes; kept own counsel.)
“There, that’s better,” Harris approved. “Everybody’s smiling again. Now the question is: How do we stay this way for three days? We couldn’t bring a damned thing to occupy our hands and minds — not even a pack of cards. So how do we stay interested and alert and avoid getting lost in terminal introspection?”
Kyril’s face lit up like kid’s at Christmas. “ ‘Terminal,’ you are saying? How about we programming BFS computer’s unused memory to do video gaming on CRT? Is being lots of capacity.”
Harris looked thoughtful; could see him mentally reviewing backup flight-system software interfaces for boobytraps potentially affecting mission. Then face brightened. “Good idea. I’ll block off a couple of files to keep us out of trouble; then we can start writing the programs.
“Only” — eyes danced at prospect — “instead of emulating just another video game, let’s write an interactive orbital-mechanics simulator for Candy — that’s more fun than Space Invaders.” Kyril rubbed hands in agreement. Both fell to.
Took them better part of first day to write, debug program. Kept me in stitches whole time with gleeful deadpan technical sophistry, arguing nonstop about respective programming skills, techniques, etc. Was like watching Laurelovich Hardy Olde Tyme Comedy.
But finally complete; proud creators placed me before terminal, explained keyboard basics — then sat back to watch (laughing fool heads off, offering contradictory advice), as attempted to master deceptively simple-appearing, diabolic complexities of orbital relationships.
CRT display consisted of two-dimensional representation of orbital problem: Small circle in middle represented planet, gravitational source; two objects circled primary, one oblong, one triangular. Hypothetical shuttle orbited close-in, at high speed; target satellite, located two-thirds of way to screen’s edge, moved much more slowly. Shuttle’s fuel status presented in lower right-hand corner; figures updated continuously as power used, whether reaction control system (attitude control) or thrust. Control inputs (vector, feet-per-second; whether RCS, OMS) displayed at lower left.
Object of game was orbital rendezvous, docking. Operator keyed in delta-V changes, trying to alter vehicle’s orbit, effect rendezvous. Once orbits very closely matched, screen shifted to large-scale display; enabled close-in maneuvering, docking.
But quickly discovered orbital mechanics ain’t easy — in fact, ran out of fuel 13 times back-to-back before discovering basic principle by accident: Farther out the orbit, slower the orbital speed (everybody knows that) — but to overtake target ahead in same orbit, necessary to slow vehicle! Speeding up forces you out into wider, slower orbit — never catch up. Reducing delta-V drops you into lower, faster orbit. Short burn necessary to circularize new orbit. After overtaking target on inside track, add delta-V, which moves you back out into wider, slower orbit; then circularize again.
Only after positions, orbits, practically identical do maneuvering inputs produce results compatible with reasonable expectations.
Took me 26 tries to achieve docking. And wasn’t until then that I noticed how quiet cabin had become; realized teasing, needling, good-natured, boyish laughter had died out quite some time back. Looked up to meet Harris’s gaze.
“Ordinarily,” he observed wryly, “I let my students learn how incredible they are from someone else. However, these are rather special circumstances.
“Candy…” Harris paused, shaking head slowly, “…you’re making me look bad! I’m not going to tell you how many tries it took me to manage my first rendezvous and docking on a simulator like this — and I didn’t have to figure out the theory first…!”
Kyril’s grin was ear-to-ear. “You sure you not Russian…?” he prodded. “I knowing you not looking Russian, but…”
“But now I’m going back into the software,” interrupted Harris firmly, “and I’m going to install the antisatellite-missile launching program.”