And somehow, “Jones & Company” wasn’t a substitute: the _Prometheus_ might never be built.
I was at Bats’ Cave when I reached this dismal conclusion. I didn’t feel like flying but I went to the locker room and got my wings anyhow.
Most of the stuff written about Bats’ Cave gives a wrong impression. It’s the air storage tank for the city, just like all the colonies have — the place where the scavenger pumps, deep down, deliver the air until it’s needed. We just happen to be lucky enough to have one big enough to fly in. But it never was built, or anything like that; it’s just a big volcanic bubble, two miles across, and if it had broken through, way back when, it would have been a crater.
Tourists sometimes pity us loonies because we have no chance to swim. Well, I tried it in Omaha and got water up my nose and scared myself silly. Water is for drinking, not playing in; I’ll take flying. I’ve heard groundhogs say, oh yes, they had “flown” many times. But that’s not _flying_. I did what they talk about, between White Sands and Omaha. I felt awful and got sick. Those things aren’t safe.
I left my shoes and skirt in the locker room and slipped my tail surfaces on my feet, then zipped into my wings and got someone to tighten the shoulder straps. My wings aren’t readymade condors; they are Storer-Gulls, custom-made for my weight distribution and dimensions. I’ve cost Daddy a pretty penny in wings, outgrowing them so often, but these latest I bought myself with guide fees.
They’re lovely — titanalloy struts as light and strong as bird bones, tension-compensated wrist-pinion and shoulder joints, natural action in the alula slots, and automatic flap action in stalling. The wing skeleton is dressed in styrene feather-foils with individual quilling of scapulars and primaries. They almost fly themselves.
I folded my wings and went into the lock. While it was cycling I opened my left wing and thumbed the alula control — I had noticed a tendency to sideslip the last time I was airborne. But the alula opened properly and I decided I must have been overcontrolling, easy to do with Storer-Gulls; they’re extremely maneuverable. Then the door showed green and I folded the wing and hurried out, while glancing at the barometer. Seventeen pounds — two more than Earth sea-level and nearly twice what we use in the city; even an ostrich could fly in that. I perked up and felt sorry for all groundhogs, tied down by six times proper weight, who never, never, never could fly.
Not even I could, on Earth. My wing loading is less than a pound per square foot, as wings and all I weigh less than twenty pounds. Earthside that would be over a hundred pounds and I could flap forever and never get off the ground.
I felt so good that I forgot about Jeff and his weakness. I spread my wings, ran a few steps, warped for lift and grabbed air — lifted my feet and was airborne.
I sculled gently and let myself glide towards the air intake at the middle of the floor — the Baby’s Ladder, we call it, because you can ride the updraft clear to the roof, half a mile above, and never move a wing. When I felt it I leaned right, spoiling with right primaries, corrected, and settled in a counterclockwise soaring glide and let it carry me toward the roof.
A couple of hundred feet up, I looked around. The cave was almost empty, not more than two hundred in the air and half that number perched or on the ground — room enough for didoes. So as soon as I was up five hundred feet I leaned out of the updraft and began to beat. Gliding is no effort but flying is as hard work as you care to make it. In gliding I support a mere ten pounds on each arm — shucks, on Earth you work harder than that lying in bed. The lift that keeps you in the air doesn’t take any work; you get it free from the shape of your wings just as long as there is air pouring past them.