anybody have any backround info on this beast?
http://www.airliners.net/photo/NASA/De- ... id=1108962
DHC-5 with 4 jet engines and big flaps?
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brokenwing
- Rank 4
- Posts: 248
- Joined: Mon Feb 16, 2004 3:31 pm
DHC-5 with 4 jet engines and big flaps?
"I had a pilot's breakfast ... A coffee and a piss followed by a donut and a dump." -D. Elegant
Re: DHC-5 with 4 jet engines and big flaps?
NASA/Boeing QSRA: redesignation of C-8A following conversion for use as a Quiet Short-haul Research Aircraft; this aircraft has a new wing incorporating upper-surface blowing and boundary-layer control; engines are four Avco Lycoming F102 turbofans.
NASA Ames Research Center's C-8A Buffalo Augmentor Wing Jet-STOL research aircraft is an extensively modified version of a high-wing, high-tail, turboprop Buffalo military transport manufactured by deHavilland, Ltd., of Canada, and designated NASA 716. It was used to study the design and operational characteristics of jet-STOL aircraft using split-flow turbofan engines to provide both propulsive and augmentor wing jet flows for increased powered-lift. The Quiet Short-Haul Research Aircraft (QSRA) is a flight research facility for investigating terminal area flight operations. The aircraft is a highly modified De Havilland C-8A Buffalo consisting of a new swept, supercritical wing and 4 YF-102 geared, high-bypass-ratio turbofan engines mounted in an "over-the-wing" installation. Upper surface blowing is used to generate high-lift coefficients to provide low approach speeds and steep approach path angles.
Re: DHC-5 with 4 jet engines and big flaps?
So it lands vertically is what you are saying. I mean the turbo-prop is amazing enough. 4 Jets?? You could be stopped by the numbers!!
Re: DHC-5 with 4 jet engines and big flaps?
Wonder how many miles per gallon on that bitch
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ScudRunner
- Rank 11
- Posts: 3239
- Joined: Tue Jun 08, 2004 11:58 am
Re: DHC-5 with 4 jet engines and big flaps?
I think the bigger question about that picture is, When did the Gay Pride Commitee get a 767?
Re: DHC-5 with 4 jet engines and big flaps?
Nothing new about the augmentor or Coanda effect. A successful production aircraft that uses it is the Antonov An-72 Coaler, which first flew in 1977. According to Wikipedia the Coandă effect was also researched and possibly used by John Frost of Avro Canada. Frost was the designer of the Avrocar flying saucer.
Re: DHC-5 with 4 jet engines and big flaps?
I visited the Jap Navy main base at Iwakuni...
They keep producing at a slow rate and retire them at a thousand hours
to keep the factory going. They tried to sell them at $20millions when the Canadair 215 was selling for three millions...
It has a fifth engine for the Coanda effect...if it fail, everybody die!
Fly at incredibly slowspeed, fact, backward in a hurricane,
dispensing torpedo shaped lifeboats...
They have dozens just parked, retired with less than a thousand hours!
Shin Meiwa proposed a commercial transport version of the US-1 with seating for 69 passengers, but it was just too expensive and didn't happen. The first prototype of the PS-1 and a US-1 were also used in trials by the JMSDF and Japan National Fire Agency as a "water bomber" to fight forest fires. While the big flying boat is obviously too expensive for purchase of new aircraft for fire-fighting, it is possible that retired aircraft may be employed in this role.
* However, the type still seems to be very much alive and well, and in fact production is to continue with a new version, the "US-1A Kai", where "Kai" is short for "kaizen (modification)". The project was initiated in 1996, with the development contract specifying construction of two flight prototypes and two static-test prototypes. The first US-1A Kai prototype of performed its initial flight on 18 December 2003, taking off and landing in Osaka Bay.
The US-1A Kai is externally very similar to the US-1A, the most significant difference being that it is fitted with substantially more powerful Rolls-Royce AE-2100J engines, providing 3,425 kW (4,590 SHP) each, driving Dowty six-bladed propellers instead of the three-bladed propellers of the US-1A. The flap-blowing system is driven by an LHTEC CTS800-4K turboshaft, a civil version of the T800 military turboshaft, providing max power of about 1,015 kW (1,360 SHP). Performance and takeoff weight are improved.
The US-1A Kai also has a modified wing with integral fuel tanks and a pressurized upper cabin, permitting a ceiling of 6,100 meters (20,000 feet), twice that of the unpressurized US-1A. Avionics have been improved, including a glass cockpit and French Thales Ocean Master search radar. No doubt the modernized avionics suite includes a Global Positioning System navigation satellite receiver, a very handy item for an oceanic SAR machine, but such details are unclear. The first production machine went into formal JMSDF service in 2007. It is unclear IHI is license-building the AE-2100J engines.
It was initially believed that all seven surviving US-1As would be upgraded to US-1A Kai standard and that three production US-1A Kai machines would be built, but considering how previous purchases in the series have been strung out from year to year, an estimate of how many US-1A Kai machines will be built would probably not be very meaningful. The Japanese government considered buying a foreign machine, most likely a modern Russian Beriev flying boat, but decided -- probably for political reasons, though it is plausible that no other machine really fit JMSDF needs -- to buy from a domestic manufacturer, even though with such low production rates a foreign machine would be much cheaper. Whatever the case, in the 21st century the big Shin Meiwa machine remains a lovely testament to the romance of the flying boat.
USA KAI
Ancestor, the Martin Marlin with it's corncob engines
and it's twenty atomic bombs behind each engines...
Killed by "Bomb Away" Lemay...
They keep producing at a slow rate and retire them at a thousand hours
to keep the factory going. They tried to sell them at $20millions when the Canadair 215 was selling for three millions...
It has a fifth engine for the Coanda effect...if it fail, everybody die!
Fly at incredibly slowspeed, fact, backward in a hurricane,
dispensing torpedo shaped lifeboats...
They have dozens just parked, retired with less than a thousand hours!
Shin Meiwa proposed a commercial transport version of the US-1 with seating for 69 passengers, but it was just too expensive and didn't happen. The first prototype of the PS-1 and a US-1 were also used in trials by the JMSDF and Japan National Fire Agency as a "water bomber" to fight forest fires. While the big flying boat is obviously too expensive for purchase of new aircraft for fire-fighting, it is possible that retired aircraft may be employed in this role.
* However, the type still seems to be very much alive and well, and in fact production is to continue with a new version, the "US-1A Kai", where "Kai" is short for "kaizen (modification)". The project was initiated in 1996, with the development contract specifying construction of two flight prototypes and two static-test prototypes. The first US-1A Kai prototype of performed its initial flight on 18 December 2003, taking off and landing in Osaka Bay.
The US-1A Kai is externally very similar to the US-1A, the most significant difference being that it is fitted with substantially more powerful Rolls-Royce AE-2100J engines, providing 3,425 kW (4,590 SHP) each, driving Dowty six-bladed propellers instead of the three-bladed propellers of the US-1A. The flap-blowing system is driven by an LHTEC CTS800-4K turboshaft, a civil version of the T800 military turboshaft, providing max power of about 1,015 kW (1,360 SHP). Performance and takeoff weight are improved.
The US-1A Kai also has a modified wing with integral fuel tanks and a pressurized upper cabin, permitting a ceiling of 6,100 meters (20,000 feet), twice that of the unpressurized US-1A. Avionics have been improved, including a glass cockpit and French Thales Ocean Master search radar. No doubt the modernized avionics suite includes a Global Positioning System navigation satellite receiver, a very handy item for an oceanic SAR machine, but such details are unclear. The first production machine went into formal JMSDF service in 2007. It is unclear IHI is license-building the AE-2100J engines.
It was initially believed that all seven surviving US-1As would be upgraded to US-1A Kai standard and that three production US-1A Kai machines would be built, but considering how previous purchases in the series have been strung out from year to year, an estimate of how many US-1A Kai machines will be built would probably not be very meaningful. The Japanese government considered buying a foreign machine, most likely a modern Russian Beriev flying boat, but decided -- probably for political reasons, though it is plausible that no other machine really fit JMSDF needs -- to buy from a domestic manufacturer, even though with such low production rates a foreign machine would be much cheaper. Whatever the case, in the 21st century the big Shin Meiwa machine remains a lovely testament to the romance of the flying boat.
USA KAI
Ancestor, the Martin Marlin with it's corncob engines
and it's twenty atomic bombs behind each engines...
Killed by "Bomb Away" Lemay...
Re: DHC-5 with 4 jet engines and big flaps?
That Japanese one looks like some kind of weird amphibious Dash-7!
Re: DHC-5 with 4 jet engines and big flaps?
Even the retired ones had the latest gadgets,
Head up display, infra red vision, you name it, they had it!!!
Head up display, infra red vision, you name it, they had it!!!
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brokenwing
- Rank 4
- Posts: 248
- Joined: Mon Feb 16, 2004 3:31 pm
Re: DHC-5 with 4 jet engines and big flaps?
why would it fall out of the sky if the coanda engine quit?
"I had a pilot's breakfast ... A coffee and a piss followed by a donut and a dump." -D. Elegant
