USAFHummer From United States of America, joined May 2000, 10685 posts, RR: 52 Posted (12 years 1 month 2 weeks 19 hours ago) and read 5465 times:
I was reading a book today, "Climbing the World's 14 Highest Mountains" when I came across an interesting passage regarding the operations of a Pilatus Porter in support of an expedition in 1960 to climb Dhaulagiri in Nepal, at 26,794 ft. (8,167m) the 7th highest mountain in the world...I will quote the relevant portions here...
"The reason there was so few Sherpas was that the expedition was supported by a Pilatus Porter glacier plane (painted red and yellow and christened 'Yeti') whose pilot and co-pilot/mechanic Ernst Saxer and Emil Wick became critical members of the team.
The plane was to be used to fly equipment and climbers to the north-east col, though an early acclimatization camp was first set up on the Dambush Pass. The pass is at 5,200m (17,050 ft), a world-record height for a plane landing. The north-east col is at 5,700m (18,700 ft) and when landings were made there it (obviously) set a new world record. The use of the plane allowed the team to avoid a tedious walk-in and any possible disputes with porters, but the rapid height gain (from Pokhara to 5,200m in about an hour) caused all the climbers and Sherpas problems with altitude sickness. The plane was also not without its problems. Having successfully flown from Switzerland to Pokhara and made numerous flights to Dambush and the Col, it blew a cylinder forcing an emergency landing at Pokhara from which the pilots escaped unscathed. A replacement engine was obtained in a very fast time, but the plane later crashed on the Dambush Pass. Again the pilots escaped unharmed...
...The early arrivals on the Col (the northeast) forced the route upwards, though one of their earliest tasks was to stamp out a runway for Yeti when its skis sank in soft snow. The take-off along this makeshift runway was a do-or-die effort by Ernst Saxer flying alone: fail to take off and he and the plane would disappear into a crevasse; make insufficient height in time and he would crash into seracs (added by me: large ice walls for those not mountain oriented). Take-off was successfu and represented the most courageous act of the trip."
If there ever was a plane that defined STOL performance, the Porter is it...but this is astounding...does anyone know more about this or could figure out more (ie takeoff lengths, etc?)...or also provide insight into how this is possible, please reply...
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PPGMD From United States of America, joined Sep 2001, 2453 posts, RR: 0
Reply 1, posted (12 years 1 month 2 weeks 18 hours ago) and read 5395 times:
The Helio Courier had much better STOL preformance, it would take off in a plane length and it had no published stall speed. Quite a preformer, I could only think what kind of preformance it could have gotten with a turbine engine.
Arrow From Canada, joined Jun 2002, 2676 posts, RR: 2
Reply 2, posted (12 years 1 month 2 weeks 16 hours ago) and read 5356 times:
"Having successfully flown from Switzerland to Pokhara and made numerous flights to Dambush and the Col, it blew a cylinder forcing an emergency landing at Pokhara from which the pilots escaped unscathed."
Blew a cylinder? I thought the Porter had a PT6 turbine engine. Am I mixing it up with something else?
Porter is a spectacular performer, but I think the Beaver defined STOL, or maybe the Westland Lysander. Beaver can claw its way to 18,000 feet too.
Never let the facts get in the way of a good story.
Sllevin From United States of America, joined Jan 2002, 3376 posts, RR: 6
Reply 4, posted (12 years 1 month 2 weeks 7 hours ago) and read 5135 times:
The turbo-porter (the only version I know personally) is truly a fantastic STOL performer. I have personally witnessed it operate from an RC-plane runway (150') with plenty of room to spare (if you can get ahold of Clay Lacy's 1998 or 1999 calendar, there's a picture of him taking off with his Turbo Porter from the RC field.
The Porter can also do in-flight beta (reverse) thrust, meaning it can approach at incredibly steep angles and land in essentially zero feet.
I don't know what the high-altitude performance would be, but at sea level, it's remarkable.
707cmf From France, joined Mar 2002, 4885 posts, RR: 28
Reply 5, posted (12 years 1 month 2 weeks 5 hours ago) and read 5106 times:
The paragliging club of my local airport uses a Porter, and can confirm. Every tiimes, it descends at an incredibly steep angle, and usually lands at the same moment the first paraglider touches the ground. Quite amazing.
Boeing nut From , joined Dec 1969, posts, RR:
Reply 9, posted (12 years 1 month 1 week 3 days 5 hours ago) and read 4893 times:
How do you like your PC-12? I must say that I am impressed with it. On paper anyway, because unless I hit the lottery or acquire the cash from your industry , I have no chance of owning one. The performance is truly impressive.
I have a fried that now works for Cessna, and we were talking about the CJ1, new Mustang vs the Eclipse and other "personal jets". I then asked him how Cessna's small jets can match up with the PC-12. Without skipping a beat he said we don't have anything that can compete with the PC-12. I was surprised when he said that. "Speed is the only thing we have vs the PC-12."
Your comparing apples to oranges there dude. But tell me this, you know of another fixed wing aircraft that weighs 9,000+ lbs that can get off the ground in 1,200 ft? There aren't many, I assure you of that.
Mcdonobr From United States of America, joined Oct 2001, 82 posts, RR: 0
Reply 13, posted (12 years 1 month 1 week 6 hours ago) and read 4801 times:
Boy, does this discussion bring back some very fond memories. While living in Bangkok as a young teenager from '63-'67 I used to hitch rides on
Air America, Bird Air, & Continental Air Svs. Pilatus Porter/turbo Porter and Helio Couriers doing daily personnel & supply runs to Thai Border Patrol Police camps. Some of the airstrips were very, very short dirt runways "more like paths" cut out on the top of mountaintops at unbelievable angles (very few level ones and often ending at a cliff edge). I was always amazed at how slow they could fly and still stay airborne, guess that's where those huge Porter wings came in handy. This was the real beginning of my life as a "plane nut".