My father's company owned two Dash 7 which charterted workers, their families and visitors to the mine and residential complex plus to the port and a main city where the administrative offices and former training facilities were. The first play I flew on.
Assuming there are surviving aircraft of this type left, they could modify it for destinations in the Antarctic circle but the technological limitations and the gravity... An airplane fan can dream though. What would benefit the Dash 7 in Antarctica, countless surveying and nature study programs.
Why is he starting #4 engine first? Normally he would start #3, because it's hydraulic pump charges up the brakes.I see he shut down #2 during a start; finger trouble?
Could have started #4 first as the PIC may know it’s the engine least likely to suffer high ITT on start peak if attempting a start off the battery. From experience, when I operated the DHC-8-100 I would alternate starts on some aircraft when I knew I had an Engine that was prone to high ITT on start up to take the load off a ‘tired’ engine & avoid an over temp (which could’ve cost me my job!). As for #2 it appears it may have failed to light off & thus it was motored to clear the fuel from the hot section. As a result the starter generator needed a prescribed cool down period before the subsequent start attempt. It makes sense they started #1 prior to re attempting a start on #2 during the cool down. Just my 2 cents. I never operated DHC-7 but would have loved to. Guys I know that have reckon they were great fun.
It was cold, we got the engines running in the order that we could.. We never did battery starts, we actually have an APU in these modified aircraft. Also we have 2 hydraulic systems plus backups.. No worries during start because before it's an important issue we'd have all 4 engines running.. also that's my ugly mug there in the cockpit in the beginning of this video..
Jim Ramsay ... I have had the good fortune to fly on these a number of times when Rio was flying them in Texas. They are a blast to fly in. Straight up on takeoff and point the nose at the ground to land.
I'm wondering what the heck happened to that #2 engine, when it was started, then suddenly shut down, and restarted again shortly? I realize the Dash-7 is an old bird, but proper maintenance can still be performed to make it work reliably.
It’s to cold for the starter engine .. so it would not reach 12 % n1 and can’t start up. You only can start these electric starters for 1 minut max .. So the pilot cranked it and noticed not enough N1 .. cut it and waited. Sometimes the battery and or cross over start power is just not enough. And old starter would take it so quickly..
@@mel63613 Exactly what Monk said. Those old birds get grumpy in the cold. Our Dash 7's get pretty dramatic when starting up in winter, particularly when you're hitting -40
It strikes me as a DISGRACE that this aircraft is not done up either: 1. in Army Tactical Camo, or... 2. In Black and Gold, Army Ceremonial Colors. ...y'know, to match Tony Scumacher's Dragster!
Not necessarily double fuel consumption, significantly increased, not doubled, four engines need not work as hard as two, to do the same amount of work.
all modern airliners have flight spoilers that deploy in unison with aileron inputs, it's purpose is to increase roll rate (thus they can make smaller ailerons) and counteracting induce yaw by increasing drag on the lower wing
@@mel63613 Sorry. I know this comment is 4 years old but I just wanted to correct you slightly. Only the outboard roll spoilers were deactivated in cruise (above 140 knots IIRC). The inboard roll spoilers are always active.
Muito raro deste protótipo quadrimotores, além de partida expelindo fumaças em tubos de escapes acima das asas, e como se fossem motores a pistão, esse avião é bem diferente!!!
it predated the dash 8, and compared to the dash 8, it was a flop selling just over 110 units, although with it's 4 slow turning props it was much quieter, and quite suited to city airports, but it also served for many US regional airlines. quite a sluggish plane though, they are STOL aircraft but while a dash 8 has two 5000 hp engines, this has 4 1250 hp, meaning it is on the lower end in terms of power to weight. Although while the dash eight can only carry passengers, this has the strengthen floor for cargo carrying.
D.H. built 107 Dash-7s Due to it being an S.T.O.L. aircraft, it enjoyed some success in Norway, and Great Britain.It was used with great success, flying off the London docks, in the city/Four engines? This was DeHavilland's first foyer into a 'big-time' passenger market, and four engines was the way to go.The plane was a 'bitch' to work on though, and the Dash-8, with two engines, outshone the -7.
Izno Iznogoud It’s absolutely a deHavilland DHC-7 (Dash 7) 103 series aircraft. It’s one of the original 3 purchased by the US Government and reconfigured for military use. The military used the designator O-5A, EO-5B and EO-5C to identify the role of the aircraft.
Part of the idea behind it is there was an idea in the 1960s that commuters would utilise 'STOLports' basically tiny airports with short runways, therefore a plane like the dash 7 would be needed, however the STOLports never gained any traction
I know about bigger airplanes designed to use (4) engines due weight & flight capabilities for various job functions. But to me that aerodynamic design don't make any sense for too many power plants. Who the hell came up with this method for bullshit junk on the drawing board for wasting so much more money.
This was designed by Dehavilland Canada back in the 1970s. Because of the design (which apparently is BS junk to you) paved the way for many Dash 8's. The Dash 7 can take off and land as short of 2,300 ft runway's and unpaved surfaces. The Dash 7 is still used where many airplanes in the arctic still cannot go. So this BS design still works today
Decklan Brereton: That is very harsh for someone that has no knowledge of the specifications it was built for . And guess it is all about money to you. An airline made a specification to Dehavilland Canada for a short take off and landing airplane that can carry a heavy load into and out of dirt runways. I would say that is money well spent. And as a side note. NOT YOUR MONEY!
They came up with that because: 1) There was no available and cheap engine with necessary horsepower for a twin version, 2) The wing is blowed with much more efficiency, resulting in extra lift, and 3) Because they could...
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I love four-engine turboprops. So thrilling.
So do we ;)
they fly like the C130
My father's company owned two Dash 7 which charterted workers, their families and visitors to the mine and residential complex plus to the port and a main city where the administrative offices and former training facilities were. The first play I flew on.
I didn't know Army Air had Dash-7's. I flew in a civy version out of California to Monterey.
What a beauty! Thanks for sharing!
Nobody:
Dash 7:
Payload 100
Passenger 50
*Stol 1000*
The wet dream of any bushflyer....
Assuming there are surviving aircraft of this type left, they could modify it for destinations in the Antarctic circle but the technological limitations and the gravity... An airplane fan can dream though.
What would benefit the Dash 7 in Antarctica, countless surveying and nature study programs.
Why is he starting #4 engine first? Normally he would start #3, because it's hydraulic pump charges up the brakes.I see he shut down #2 during a start; finger trouble?
Could have started #4 first as the PIC may know it’s the engine least likely to suffer high ITT on start peak if attempting a start off the battery. From experience, when I operated the DHC-8-100 I would alternate starts on some aircraft when I knew I had an Engine that was prone to high ITT on start up to take the load off a ‘tired’ engine & avoid an over temp (which could’ve cost me my job!). As for #2 it appears it may have failed to light off & thus it was motored to clear the fuel from the hot section. As a result the starter generator needed a prescribed cool down period before the subsequent start attempt. It makes sense they started #1 prior to re attempting a start on #2 during the cool down. Just my 2 cents. I never operated DHC-7 but would have loved to. Guys I know that have reckon they were great fun.
It was cold, we got the engines running in the order that we could.. We never did battery starts, we actually have an APU in these modified aircraft. Also we have 2 hydraulic systems plus backups.. No worries during start because before it's an important issue we'd have all 4 engines running.. also that's my ugly mug there in the cockpit in the beginning of this video..
Nice capture Jim & Company :o)
Thanks Larry, how are you my good friend?
Jim Ramsay ... I have had the good fortune to fly on these a number of times when Rio was flying them in Texas. They are a blast to fly in. Straight up on takeoff and point the nose at the ground to land.
Would be great for Buffalo Airways. Have to have a word with Mikey🇬🇧
Mikey would do better to acquire a D.H
C.5 Buffalo.
It can carry 9 tons of cargo, for 2,000 miles, off a 1000- foot strip.
Lol check out Air Tindi, legit right next door to Buffalo and operating 4 of these with a 5th on the way. :P
I'm wondering what the heck happened to that #2 engine, when it was started, then suddenly shut down, and restarted again shortly? I realize the Dash-7 is an old bird, but proper maintenance can still be performed to make it work reliably.
Maybe he had a "Hot Start", and shut it down, ap he could 'motor' the engine to cool it down(?)
It’s to cold for the starter engine .. so it would not reach 12 % n1 and can’t start up.
You only can start these electric starters for 1 minut max ..
So the pilot cranked it and noticed not enough N1 .. cut it and waited.
Sometimes the battery and or cross over start power is just not enough.
And old starter would take it so quickly..
@@mel63613 Exactly what Monk said. Those old birds get grumpy in the cold. Our Dash 7's get pretty dramatic when starting up in winter, particularly when you're hitting -40
Buffalo sabers blue and gold
those are fast
It strikes me as a DISGRACE that this aircraft is not done up either:
1. in Army Tactical Camo, or...
2. In Black and Gold, Army Ceremonial Colors.
...y'know, to match Tony Scumacher's Dragster!
Whoa, it's 993!
993 WHAT?
@@mel63613 1993
A lengthened Q400 NextGen would sport a quad turboprop
... and sport a double fuel consumption, also!
AIN'T GONNA HAPPEN.
Not necessarily double fuel consumption, significantly increased, not doubled, four engines need not work as hard as two, to do the same amount of work.
4 dash7 dehavilland airplane give me
Are that plane use spoilerons
all modern airliners have flight spoilers that deploy in unison with aileron inputs, it's purpose is to increase roll rate (thus they can make smaller ailerons) and counteracting induce yaw by increasing drag on the lower wing
But the Dash-7 deactivates them at normal cruise speed. If I remember right, they come into action around 80-or 100 kts. Not sure, been too long.
Yes. For of them.
@@mel63613 Sorry. I know this comment is 4 years old but I just wanted to correct you slightly. Only the outboard roll spoilers were deactivated in cruise (above 140 knots IIRC). The inboard roll spoilers are always active.
Muito raro deste protótipo quadrimotores, além de partida expelindo fumaças em tubos de escapes acima das asas, e como se fossem motores a pistão, esse avião é bem diferente!!!
Protótipo???!!! Fabricaram 113! Que português estranho...
THAT'S easy for you to say!
Nice acft....!
was dash-7 a commercial success? and also, what is the purpose of 4 engines?
it predated the dash 8, and compared to the dash 8, it was a flop selling just over 110 units, although with it's 4 slow turning props it was much quieter, and quite suited to city airports, but it also served for many US regional airlines. quite a sluggish plane though, they are STOL aircraft but while a dash 8 has two 5000 hp engines, this has 4 1250 hp, meaning it is on the lower end in terms of power to weight. Although while the dash eight can only carry passengers, this has the strengthen floor for cargo carrying.
D.H. built 107 Dash-7s Due to it being an S.T.O.L. aircraft, it enjoyed some success in Norway, and Great Britain.It was used with great success, flying off the London docks, in the city/Four engines? This was DeHavilland's first foyer into a 'big-time' passenger market, and four engines was the way to go.The plane was a 'bitch' to work on though, and the Dash-8, with two engines, outshone the -7.
Izno Iznogoud It’s absolutely a deHavilland DHC-7 (Dash 7) 103 series aircraft. It’s one of the original 3 purchased by the US Government and reconfigured for military use. The military used the designator O-5A, EO-5B and EO-5C to identify the role of the aircraft.
Part of the idea behind it is there was an idea in the 1960s that commuters would utilise 'STOLports' basically tiny airports with short runways, therefore a plane like the dash 7 would be needed, however the STOLports never gained any traction
Same as on a Bristol Britannia, a Vanguard, a 707, or a 747.
P&W
Little bitty engines.
allencrider ... Pratt Whitney PT6 around 1200 hp.
yeah 1250 hp, used to love watching those struggle to lift off in the distance a 757 needed. Still, for that we can still watch A343s
Hey! They are P&W P.T -6-62(?) 1100 S.H.P. EACH.
PT6-50 engines and they are only on this airframe
I know about bigger airplanes designed to use (4) engines due weight & flight capabilities for various job functions. But to me that aerodynamic design don't make any sense for too many power plants. Who the hell came up with this method for bullshit junk on the drawing board for wasting so much more money.
USAF?
This was designed by Dehavilland Canada back in the 1970s. Because of the design (which apparently is BS junk to you) paved the way for many Dash 8's. The Dash 7 can take off and land as short of 2,300 ft runway's and unpaved surfaces. The Dash 7 is still used where many airplanes in the arctic still cannot go. So this BS design still works today
Decklan Brereton, the esteemed aeronautical engineer, has spoken.
Decklan Brereton: That is very harsh for someone that has no knowledge of the specifications it was built for . And guess it is all about money to you. An airline made a specification to Dehavilland Canada for a short take off and landing airplane that can carry a heavy load into and out of dirt runways. I would say that is money well spent. And as a side note. NOT YOUR MONEY!
They came up with that because:
1) There was no available and cheap engine with necessary horsepower for a twin version,
2) The wing is blowed with much more efficiency, resulting in extra lift, and
3) Because they could...