jct
Senior Member
Well i want to know too...
Heavy Metal
- Thread starter amazinblue82
- Start date
Yaw control. Just like in aircraft and X, Y, and Z axes. "Pitch" - nose up/down, "Roll" - nose straight, wing tips up/down, and "Yaw" - nose left/right
In a car:
Anyway, I have not been keeping up with NASCAR since I left the car business a decade ago. Lotta aerodynamic/safety upgrades. Yaw control in a car is aero talk for controlling spinouts.
it is actually fascinating real science in making cars go fast. Some people just see guys/gals driving in circles. Its way more than that .. and I am a self-professed nerd and I shoulda known exactly what that thing on the backend was back in Post #400.
Its a "deck fin" -- I didnt know the name of it though. Its on the left side of the car, because racing generally is a bunch of left turns. Working with the other aero parts on modern Nascars, it helps increase "side forces" that in turn help keep the cars from spinning out.
My judgement says in also helps keep laminar air flow across the roof/deck to help spoiler with managing "downforce" that helps maintain traction in turns.
What follows is long .. but explains a lot of the other safety/aero stuff on cars built to go really fast.
Old Mike
Well-Known Member
Might be here .. and it was probably me that did it (gettin' forgetful as the personal odo clicks forward)
another forgotten plane. wasn't the best airframe ever done, but swept-wing design helped usher in modern aviation. The B47 "Stratojet".
how cool must it have been to have been in aviation 1940-1970 or so (still today .. my daughter is an aerospace engineer at Boeing).
A sight to behold "on the bottle" (last pic and vid.. fascinating technology they tried to employ in a pinch) the B-47 lasted longer than you might think but didn't encounter very much combat action, if any.
source: Boeing B-47 Stratojet - Wikipedia
The Boeing B-47 Stratojet (company Model 450) is a retired American long-range, six-engined, turbojet-powered strategic bomber designed to fly at high subsonic speed and at high altitude to avoid enemy interceptor aircraft. The B-47's primary mission was as a nuclear bomber capable of striking the Soviet Union. With its engines carried in nacelles under the swept wing, the B-47 was a major innovation in post-World War II combat jet design, and contributed to the development of modern jet airliners.
The B-47 entered service with the United States Air Force's Strategic Air Command (SAC) in 1951. It never saw combat as a bomber, but was a mainstay of SAC's bomber strength during the late 1950s and early 1960s, and remained in use as a bomber until 1965. It was also adapted to a number of other missions, including photographic reconnaissance, electronic intelligence, and weather reconnaissance, remaining in service as a reconnaissance aircraft until 1969 and as a testbed until 1977.
First prototypes were fitted with General Electric J35 turbojets, the production version of the TG-180, with 3,970 lbf (17.7 kN) of thrust. Early jet engines did not develop good thrust at low speeds, so to help a heavily loaded bomber take off, the XB-47 prototype had provisions for fitting 18 solid-fuel rocket-assisted takeoff (RATO) rockets with 1,000 lbf (4.4 kN) of static thrust each. Mounts for nine such units were built into each side of the rear fuselage, arranged in three rows of three bottles.
The performance of the Model 450 design was projected to be so good that the bomber would be as fast as fighters then on the drawing board, and so the only defensive armament was to be a tail turret with two .50 in (12.7 mm) AN/M2 Browning machine guns, which would in principle be directed by an automatic fire-control system.
another forgotten plane. wasn't the best airframe ever done, but swept-wing design helped usher in modern aviation. The B47 "Stratojet".
how cool must it have been to have been in aviation 1940-1970 or so (still today .. my daughter is an aerospace engineer at Boeing).
A sight to behold "on the bottle" (last pic and vid.. fascinating technology they tried to employ in a pinch) the B-47 lasted longer than you might think but didn't encounter very much combat action, if any.
source: Boeing B-47 Stratojet - Wikipedia
The Boeing B-47 Stratojet (company Model 450) is a retired American long-range, six-engined, turbojet-powered strategic bomber designed to fly at high subsonic speed and at high altitude to avoid enemy interceptor aircraft. The B-47's primary mission was as a nuclear bomber capable of striking the Soviet Union. With its engines carried in nacelles under the swept wing, the B-47 was a major innovation in post-World War II combat jet design, and contributed to the development of modern jet airliners.
The B-47 entered service with the United States Air Force's Strategic Air Command (SAC) in 1951. It never saw combat as a bomber, but was a mainstay of SAC's bomber strength during the late 1950s and early 1960s, and remained in use as a bomber until 1965. It was also adapted to a number of other missions, including photographic reconnaissance, electronic intelligence, and weather reconnaissance, remaining in service as a reconnaissance aircraft until 1969 and as a testbed until 1977.
First prototypes were fitted with General Electric J35 turbojets, the production version of the TG-180, with 3,970 lbf (17.7 kN) of thrust. Early jet engines did not develop good thrust at low speeds, so to help a heavily loaded bomber take off, the XB-47 prototype had provisions for fitting 18 solid-fuel rocket-assisted takeoff (RATO) rockets with 1,000 lbf (4.4 kN) of static thrust each. Mounts for nine such units were built into each side of the rear fuselage, arranged in three rows of three bottles.
The performance of the Model 450 design was projected to be so good that the bomber would be as fast as fighters then on the drawing board, and so the only defensive armament was to be a tail turret with two .50 in (12.7 mm) AN/M2 Browning machine guns, which would in principle be directed by an automatic fire-control system.
Old Mike
Well-Known Member
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300rag
It's Not Going to Shift Itself
Kind of funny when you look at a newer or repowered version and compare. You wonder how those tiny turbines got that off the ground.
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Old Mike
Well-Known Member
Yeah. I followed that. The KC-135 fleet originally numbered over 800. Most were mothballed or scrapped. The remainder went through an extensive refit at Boeing. The wings had to be totally redesigned handle the new engines because they develop nearly twice the thrust of the J57s. Horizontal stabilizers were canned off of mothballed 707s (they’re larger). Some went through smaller scale refit. They received P&W TF33s (JT3Ds, the same as 707s and B-52s) and the stabilizers and went to ANG units. The old J57s did leave the plane a little under powered. A tanker with a heavy load would use up a lot of runway on takeoff and with no thrust reversers, likewise on landing.
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knew they are bigger for efficiency reasons, but didnt know the details. here we are:
short vid .. ignore the math forumlae, but the narration is simple. big air uses less energy therfore less fuel, small engine uses more fuel to accelerate less air faster.
short vid .. ignore the math forumlae, but the narration is simple. big air uses less energy therfore less fuel, small engine uses more fuel to accelerate less air faster.
Deadly AC-130 Gunship in Action Firing All Its Cannons
i love the way military folks talk about their weapons.
I dig the AC-130 too. Its in here somewhere in this thread. Introducting enemies everywhere to our brand of freedom for 50+ years
i love the way military folks talk about their weapons.
I dig the AC-130 too. Its in here somewhere in this thread. Introducting enemies everywhere to our brand of freedom for 50+ years
barnfind
Old Man with a Hat
Maiden flight made in April of 52, Buffs still deliver!
They did it by using a lot of fuel!!
What I find amazing today are the newer engines are larger, more powerful, and use far less fuel. Incredible!
65sporty
Old Man with a Hat
After watching the video I remember that race.Had a chance to have a trip to Hendricks Motorsports in Concord NC on a work deal. Had the free museum visit and got these shots. Also had a "VIP" tour of several other "No Public Access" areas where no photography is allowed if you can get int.
Anyway, the museum stuff is below. Please, I know we have folks not so keen on NASCAR, Chevrolet, or Hendricks, or Johnson, or Gordon, of whatever. I don't care much about any of that .. just was trying to be a "car guy" around some other "car guys/gals"
First one. Ken Schrader's wreck at Talledega in 1995. Everybody was sure he was a goner. Check out first 30 seconds, then back about the 2min mark to the end
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65sporty
Old Man with a Hat
There was one on static display at Barksdale AFB when I was there. Predecessor to the B-52
65sporty
Old Man with a Hat
Where you stationed and what years? We had KC-135A's at Barksdale AFB when I was there. I was a B-52 Crew chief.
65sporty
Old Man with a Hat
The KC-135A models used water injection to add thrust on takeoff.
Here is a video of the B-52G and KC-135A using water injection.
65sporty
Old Man with a Hat
I Crewed both the B-52G's and B-52H models. That is a H in the pic you posted. They will always hold a special place in my heart, I loved my time spent in the Air Force as a crew chief and love the B-52, but I am quite partial because of the time I spent with them.
you guys working on/around or flying these planes must have cool stories. thx for your "heavy metal" service.
barnfind
Old Man with a Hat
I worked on T-37s, T38s and F-5s in my youth, I work around, not on B-52s nowadays.
Old Mike
Well-Known Member
Grissom, Indiana. TDYs to Minot, Goose Bay, Torreón, Hickam. At Grissom we had mostly KCs and a few ECs. The ECs had the TF33s.
Old Mike
Well-Known Member
Yeah. If I remember correctly, there was a tank above the main wheel wells. It held 675 gallons. We would fill it with demineralized water. It was sprayed into the second stage compressor to make the fuel/air mix more dense. Water takeoffs made billowing clouds of black smoke.
