For comfort a 767 is good. If you wish to look outside then you might want to fly in something else. The dyhedral on the 67 is great and the view of the wing also great. It is difficult to see outside other than the wing. The 747 in first is still wonderful as is an <acronym title="Air Madagascar">M...
Jump to postPSA Electra. We just flew around SAN twice and landed.
Jump to postUnlike some pilots, I want my aircraft to look good. So here are a few of my ideas about the two aircraft: The wing sweep and tail of the 707 look better to me than the DC-8. I also prefer the look of the 707's windows- except for the windshield. The "8" has the center windshield corresponding with ...
Jump to postIn TIMES like this you hope the autopilot is working...
Jump to postWhile painted wings have few benefits if painted white, wings painted fairly close to their original color doesn't show a need to clean very often, and does protect wings from natural elements. In the 1960s wings were often painted for both the aerodynamic effects and the visual ones. But personally...
Jump to postReasons vary for such designs. Two gears could look alike but have greater strengths. Convair and Boeing both used a modern nose gear door system for the first generation jets. There were two doors forward of the place where the gear hung down, and a fixed faring attached to the wheel supports. This...
Jump to postAlas the Boeings and Airbuses are good to compare today. That is what we have to ride on and contrast. But digging into the past experiences of some on this forum might give us another answer. Yes, the Concorde wins the prize. But another "Con" comes close, one with aft-fan engines, area rule affect...
Jump to postRudy, George P and Bush are all Republicans and good friends. And all three are people of true blue nature. Not one of those three men is looking for acceptance through false moves. But sometimes hateful people, looking for a hero, find it necessary to find fault with one person to build up another ...
Jump to postAaron, is Jimmy the Greek still in business in SAN in the limo business? I was born and raised there overlooking Mission Valley. But to your question, I'd want my limo driver to stop the car when needed with special care. I mean to stop the car without the passengers feeling the body drop. Few peopl...
Jump to postInterest in power-to-weight ratios is apparant here. What is often forgotten is the drag factor of an airfoil. This is quite simple. During takeoff one has more to factor in when figuring accelleration than just the power-to-weight ratio. If the craft weighs less than the thrust offered by the power...
Jump to postThe 757s have different windshields than 767s. I believe essentially that 757s were to be a modernized 707. They were narrow and long jets with long range and speed. But Boeing modernized the craft with new engines (only two) and a new windshield. The nose is, in appearance, lower than the standard ...
Jump to postAn 880 can give a real kick in the pants! The GE turbojets provide power almost instantly. But for an airliner a 990 releasing the brakes after the engines are powered up can almost dislodge the seats. The power-to-weight ratios don't apply well to planes. Drag enters in and then lift becomes part o...
Jump to postApples and oranges can make everyone here correct. An aircraft engine's efficiency can be regarded at the engine's designed load. But just strictly across the board the story is quite different! A turbojet is more efficient even than a turbofan of high bypass when comparing them both at 50,000 feet ...
Jump to postHey 747 Skipper:
You have a great claim to fame. Tell me what you experienced at takeoffs in the Convair (990). You told of a pretty fast cruise. Was the departure special? 707s could push very well too. Was the 990 different to you?
Caravelles are not short range aircraft. They have four wheel bogies too. But the Fokker jet needs the doors because the gear retracts apparently below the wing box. The photos show a bulge that needs farings which the doors provide. Consider noise though. It is easier to quiet down an interior with...
Jump to postI am glad the 727s have stayed on line so long. It is a tribute to their timely design. They are efficient for a low bypass engined aircraft. Their cruise speed is about where the 880s were. They couldn't get there as quickly, or climb as fast, but they made up in economy. And the type has lived on....
Jump to postThe Convair 880 reversers were already discussed. They, even to this day, were considered extremely good. And the daisy pedal sound suppressors were fair. The 990s incorporated a sliding part as part of the engine pod similar to high bypass reversers used today on planes like the DC10. As this round...
Jump to postCommercially? Concorde then probably 880 (not the M version). The early TUs probably landed fast.
GE
Phoenix is a different situation than Las Vegas, but both are somewhat places of self worship. In the Tora an account of a man and his nephew make the point. The older guy's family and the younger's were getting in each other's way so the uncle suggested they choose their own land areas to live in a...
Jump to postNeither of these ideas is particularly good! Innovators in America can get serious and design a double-wide train that takes best advantage of needed hallway space in the cars. They need to be taller and wider. They could be expensive to develop, but done right the demand might overpower the expense...
Jump to postIt is simple. An airplane at its maximum gross takeoff weight has an undercarriage and structure designed to carry that particular G load and to have a certain margin of safety above that. If that airplane, loaded, landed with that weight the conditions would have to be expected and perfect for a pi...
Jump to postSeveral TUs are loud. I think Convair 880s were the loudest. Amazingly they probably were the most quiet inside at cruise. Some say the 990s were loud. But I've been around many 990s at T.O. and never heard much noise. Smoke?, yes. But their high bypass GE engines were fairly quiet for the day. 727s...
Jump to postAir Straightline This can mean 1, an airline that is serious; 2, one that goes straight and nonstop; and 3, possibly a carrier that caters to the straight and narrow unstead of the crooked and twisted. I have wanted to see this name on an airline for years. However, I never once imagined this relati...
Jump to postTomahawks are small and subsonic. I never heard of anyone riding in one. Let's hope the one you ride in/on doesn't have a warhead. Depending where it is launched it could give you quite a kick as the rocket motor engages. Later at turbojet power the ride probably is smooth and automically adjusting ...
Jump to postF-4s are still flying. The ones with the GE J-79s have VPIGVs and VPSs.
It looks to me that the unducted fans could probably adjust pitch fairly easily.
GE
In the case of a front fan engine if you changed the pitch of the fan blades for reverse thrust the compressor would be starved for air, and the engine would just shut off, except with power plants whose fans don't have blades right at the shaft (inner diameter).
Greeneyes
Technically the term RPM mean "revolutions per minute." So if you put an "s" after that term it removes any exact meaning. For what possibly could revolutions per minutes (plural) mean? How many minutes are you talking about? Without specifying it is meaningless. Therefore RPM means something specif...
Jump to postGE introduced an engine with variable pitch inlet guide vanes and variable pitch first few stages of stators back in about 1954 (the J-79). Convair used a commercial version of it (CJ-805) in 1959 through 1962 in the 880 and 990. But the fan engine version didn't have varying pitch on the fan. Howev...
Jump to postIt has been years since I walked around the planes at Mojave, but I just kept a low profile and asked the airport mgr if I could go look at the 880s (when they existed there). They got on the radio and called a guy named Paul who was kind of a guard. Paul escorted me to where I wanted to go. Perhaps...
Jump to postYou are right. But to do this incredible thing- this way... would require an amazingly sharp mind. Don't you think? This isn't possible without it. So we are faced with a perplexing problem. Either Bush pulled something off exibiting super high intelligence (but without enough regard for doing the r...
Jump to postSharon is possibly going to be replaced. But maybe someone will silence him. This is not pleasant, and it is not necessary. But with the extraordinary pressure from both Israel and the USA on Arafat to "control" his people... well, it's a wonder one of those two leaders is not felled by now. The wor...
Jump to postMatt: It may be difficult to believe but Mr Bush has prayer every day that God will lead him through this terror. Our president is a rare breed. He is actually TRUE BLUE for a change in American political habits of power. He lives in certain fear (a healthy one) of the enemies of freedom, and he lov...
Jump to postSome fans in the front are driven by exhaust stages. Therefore the fan can run quite a bit slower than the spool. But not all engines operate this way.
Jump to postI suppose I am showing my lack of today info... When Convair invented the Scotch Welding system they were the only aircraft company that produced wet winged craft. This started with the F-102, continued with the 106 and B-58, and even with the 880 and 990. Much, much later MD started using this syst...
Jump to postI am not sure what you are getting at. The Harrier engine certainly is not the only turbine engine with a fan rotating in one direction while the turbojet spool turns in the other.
Greeneyes
Actually there is an aircraft hanging inside the Smithsonian Institution that can fly more than 25,000 miles w/out refueling. Even the KC-10 cannot do that!
Jump to postIf the energies of people were only directed toward necessaries this would be a very dull experience.
Jump to postI only read the initial question. The responses I have not read. But I must say that the question sounds uninformed. Certainly this idea that a quote from the American press is some kind of truth for proof of an idea- is disheartening. If the press didn't distort and "half truth" itself into the liv...
Jump to postThe Convair XC99 has about a 10,000 mile range, a double deck from front to back and six engines.
Greeneyes
Actually I believe Delta-flyer misunderstood the question. Having the fan rotate at or opposite the rest of the engine wouldn't have anything to do with engine placement. Each engine would operate the same. But it might be noted that the GE CJ-805-23 fan engine incorporates a fan that turns the oppo...
Jump to postIt might be said that the higher the octane the less volitile the fuel. You might think it is just the other way around but it isn't. Fuel that wants to pre-ignite is more volitile. So the higher compression engines use the higher octane type. Aircraft gasoline is still high in octane. But what was ...
Jump to postWhat F86sabre says is correct. On commercial aircraft the fuselage sits on the center wing box structure (for low wing aircraft). But for the Lockheed U2 the wings are just attached to the aircraft on each side. And as far as the fuel facility in the center section of commercial aircraft wings, most...
Jump to postEver see Executive Decision? (these posts are so plentiful that I didn't read them. Perhaps this has been noted already.) But in that picture a hatch is opened, presumably in First Class in a 747. The pilot climbs down a ladder into a small room with electronic gear in it. Well, in a 747 just below ...
Jump to postThe "Let It Be" version of "Across the Universe." And by the way, I was a Beatle fan way back in 1964 when they sang "Long Tall Sally" and "I Want to Hold Your Hand." My sister was invited to a birthday party where one of the Beatles was present. I'd love to have gone.
Greeneyes
I feel that "Hey Jude" is the best. And worst is worst because of John's pitch problem. He sings in the cracks in all the recordings I have heard when he sings "Images of photographs..."
Greeneyes
Matt: We're Nuts has plagerized your piece and changed the names to protect the guilty. But on a curious tone, I am amazed that most of the replies to my friend SuperFly's post are somewhat simple minded. Greeneyes brought issues of world monitary controls which present world challenges to all. Does...
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