Thursday, June 25, 2020

Anchorage to Denver in a C-130

I found an interesting X-Plane model of the C-130 four-engine turboprop transport, and decided to feel it out, by flying the same route from Elmendorf AFB in Anchorage, to Buckley AFB in the Denver area. I didn't have any aircraft operating documentation when I started, but I later found a Flight Manual, Performance Manual, and Pocket Guide online - maybe too much information. Ground handling was intuitive and straight-forward, as long as I kept my speed down. The landing gear stance is very narrow, so this aircraft has a tendency to lean away from a turn at higher taxiing speeds. I took a guess at a rotation speed in the 120 knot range, with flaps at 20 degrees, and that worked out well, as the aircraft quickly lifted off and transitioned to climbing quickly. Gear up with positive rate of climb, and flaps up at about 140 knots also seemed to work well.

Here are some operating notes I made for myself:
Climb at 180 knots to 10,000 feet
Climb at 170 knots to 15,000 feet
Climb at 160 knots to 25,000 feet
Props want to run over 100% RPM so back them down after takeoff
Initial approach speed 170 knots
Final approach speed 150-140 knots
Avoid full flaps until landing is assured
Thrust reverse is crucial for stopping quickly on the runway
Autopilot works well for holding heading, rate of climb/descent, and altitude. It looks like Approach mode is also available.

Approaching the local mountains, and climbing into a broken cloud layer, at the same time, raises the pucker factor. The main question is, am I climbing fast enough to clear the hills, without seeing them?

The answer to the above question is yes, without a doubt. Of course, I was taking advantage of Foreflight's Hazard display, which shows close underlying terrain in yellow, and any terrain near or above my altitude in bright red, so it was easy to tell, even in the clouds, if I was above or below the terrain in front of me, and I had a plan to turn toward lower terrain, if it looked like I wasn't going to clear the terrain in my climb.

Climbing away from my initial cruise altitude of 22,000 feet. I wasn't sure what a good cruise altitude would be, for this aircraft, as I didn't have any kind of operating manual for it (I do now!), but 22,000 seemed intuitively to be well within the capability of this powerful turboprop transport. Once I'd leveled off at 22,000, and the airspeed had increased, I decided to see if I could climb higher.

Beautiful view of the Chugach Mountains behind me.

Passing Horsefly Lake, British Columbia. That sounds like a well chosen name, for a place to avoid, especially in summer clothes!

Approaching Lake Koocanusa, Montana.

Passing Canyon Ferry Lake, Montana.

Passing Yellowstone Lake, off to the right under the broken clouds.

I know it's Yellowstone Lake, and I know right where it is, because I'm using Foreflight to follow my flight path. I'm also trying the Synthetic Vision capability of Foreflight on the iPad. This shows me the equivalent of a Primary Flight Display on the split screen, and includes a portrayal of what the terrain in front of me might look like, on a generic day. In this case, it shows rolling green hills, which is a lot like the view out the windscreen.

Descending toward Buckley AFB in Denver, with the intent of intercepting the runway 32 ILS approach, which should help me get aligned with the glidepath to the runway.

On short final approach to Buckley AFB. I had "gotten behind the airplane" during the descent, so I was pleased to have things under control at this point. Not an impressive showing, but not awful, for my first time in this airplane.

Taxiing off the runway at Buckley AFB, with the Rocky Mountains in the background.

Monday, June 15, 2020

ATC Zero events

Things sure are different out there. Since we’re laying low most of the time, we don’t get to personally experience all the weirdness. I just ran across this writeup on ATC Zero events (unexpected total closures of Air Traffic Control facilities, when COVID-19 gets into them), and some tips for how a pilot can minimize the impact to their flying.

Thursday, June 11, 2020

Anchorage to Denver in SR-71

For the last leg of my SR-71 Blackbird flying adventure, I'm departing Elmendorf AFB in Anchorage, Alaska, for Buckley AFB in Denver, Colorado - heading back home! It looks like this adventure will have covered flights to Seattle, Denver, Honolulu, Okinawa, Anchorage, and back to Denver. Here are some things to do in the Denver area

The Anchorage weather is reported as winds calm, visibility 10, with a broken layer at 4,700 feet, a temperature of 12C and dewpoint of 7C. Should be an easy departure.

The Denver weather is reported as wind from 320 degrees at 4 knots, visibility 10, a few clouds at 9,000 feet, a temperature of 21C and a dewpoint of 1C. Looks to be a straightforward arrival.

The Denver winds are favoring Buckley's runway 32, which is nice, since it also has an ILS instrument approach to guide me in.

Lined up for departure on Elmendorf's runway 24, engines spooled up, and ready to release the brakes.

Climbing away from Elmendorf, on a 240 degree heading. It's hard to make out the Elmendorf runway straight behind me in the Anchorage mist, but it's there if you look hard. The small private airport "Sleepers Strip" off my right wing, is easier to see here.

Turning toward my initial on-course heading of 090 degrees. That heading will change significantly toward to the right, as I get farther south.

Heading eastward along the coast, maybe just offshore from Yakutat, with Glacier Bay ahead on the left.

Passing over a big lake... maybe Flathead Lake in Wyoming? Funny how it's a little tricky keeping track of geography, when cruising so fast, as things on the ground go by quickly.

Crossing the Rocky Mountains and the Continental Divide, near Nederland, a little northwest of the Denver area, while descending toward Buckley AFB. Trying not to descend too low, too soon, I've slowed my descent rate, planning to level off at 16,000 if I'm not past the Rockies by then. I should really be flying an instrument route, or at least an arrival procedure, which would protect my altitude, but with VFR conditions, I'm OK with maintaining my own clearance from the terrain.

On a wide downwind for Buckley's ILS to runway 32, with Chatfield Lake between me and the airport.

On the ramp at Buckley AFB. A B-747 was just starting up and taxiing out, as I arrived. I find it entertaining, to see the automated aircraft in X-Plane every once in awhile.