Showing posts with label flight. Show all posts
Showing posts with label flight. Show all posts
Friday, December 1, 2017
Flight
The heavens have always called to us. We have studied the sky seeking answers to questions about this thing we call life. The vast universe seems to offer us answers to all our questions, but does it? When all we had were our eyes we would look to the stars and seek answers in their shapes or positions. We saw in them the forms of the gods, foretelling the future. Some of us still do.
Others saw a challenge in the sky. If only we could mimic the flight of the bird, then we could move beyond the pettiness and conflicts we have always had. If we could fly we would be free to compress time and distance, if we were free then we would be equal if we were equal -- wars would end. The elusive challenge of flight offered us a utopia if we could but discover its mystery.
On December 17th, 1903 Orville Wright accomplished what no one had done before, he achieved sustained powered flight for about 12-seconds covering about 120-feet. Here we are approaching the 114th anniversary of that momentous day at Kill Devil Hill, Kitty Hawk, North Carolina and sadly must recognize the achievement of flight did not alter the basic nature of mankind.
Monday, October 9, 2017
Tilt-Rotors: Good but Sliced Bread is Still Better.
In the 1980’s the concept vehicle V-15 proved that
tilt-rotor technology had matured to the point that maybe we could build a
vehicle to overcome the speed and range shortfalls of the helicopter. After much development, strong lobbying
efforts by industry to overcome Congressional skepticism, and the normal
growing pains of any new advanced technology, we have proved the V-22 Osprey
brings a new dimension to the battlefield.
Operations worldwide have shown it to be more rugged than
its critics foretold, and suitable for a wider range of missions than even its
supporters imagined, but it is not the be all, end all of small cargo
aircraft. It is pretty expensive to
operate and maintain, and it is not able to fit in even our largest cargo
aircraft so getting to the remote areas where we go means it has to ride on a ship,
or fly there itself.
Now the Army is looking to replace the ubiquitous UH-60
with a next generation of vertical-lift helicopters and Bell/Lockheed Martin’s
entry is the V-280 Valor. A new
generation tilt-rotor that looks like the offspring of an Osprey and a
Blackhawk. I would say if we had all the forward basing we had in the cold war
this would be an almost ideal replacement, but we don’t.
So as the Army plans for its rapid deployments the long
pole in its planning will the answer to the age-old question. “How long will it take to get my stuff to the
battle?” It was the Union’s General Nathan
Bedford Forrest who coined the axiom “Get there firstest, with the mostest” as
his strategy. That is sound advice,
especially in today’s world where most US military is now garrisoned in the good
old US of A.
Today, we can cram at least two Blackhawks in a C-17 and I
think four will go in a C-5. Traveling
at Mach .8 (~450 kts) they will arrive significantly quicker than if the aircraft
self-deploy at Mach .4 (~220 kts). Even
with tear down and build up the force will be ready to operate before the self-deploying
assets are ready because you are not burning flight hours on either the
aircraft or the crews.
The V-280’s competition is the Lockheed Martin-Sikorsky S-97
Raider. Due to consolidation within the
aerospace business we have a unique situation where one Lockheed Martin
division is now competing against another Lockheed Martin division. It is as if Lockheed Martin can’t lose.
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