All about air force -

Indeed

Indeed, the British early established a communication squadron for this specific purpose. In the last three months of the war 279 cross-country passenger flights were made to such places as Paris, Nancy, Dunkirk, and Motel Best Inn Suites Hotels In Wexford, Pennsylvania Manchester, all of them without a single accident! Moreover, a Channel ferry service was created which in seventy-one days of flying weather made 227 crossings, covered over 8,000 miles, and carried 1,843 passengers. With trains seldom going above 60 miles an hour, the slowest airplane went 80 and the average daylight plane on the front probably equaled 110. The fast fighters went up to 120, 130, and even 140 miles an hour, over twice as fast as any method of travel previously known. Just as the curtain closed on the war, there had been developed in the United States a plane credited with 162-2/3 miles an hour, and no one for a moment believed that the limit had been reached. Altitude likewise had been obliterated. The customary height for two-seated observation and bombing planes was between one and two miles, and of single-seated scouts between two and four miles. These altitudes were not the freakish heights occasionally obtained by adventurous fliers; on the contrary they were the customary levels at which the different kinds of duties were carried out. Many men, of course, went far higher. Since then an American, Roland Rohlfs, flying a Curtiss “Wasp” set the unofficial altitude record at 34,610 feet–higher than the worlds highest mountain. Life at these altitudes was not possible, of course, under ordinary conditions. The temperature fell far below zero and the air became so thin that neither man nor engine could function unaided. As a result the fliers were kept from freezing by electrically heated clothing and from unconsciousness from lack of air by artificially supplied oxygen. Similarly the oil, water, and gasolene of the engine were kept working by special methods.

May 17th, 2008 | Posted in Uncategorized | Comments Off

It is moved in one direction for increase of air

It is moved in one direction for increase of air pressure, and in
the opposite for decreased pressure. The positions of the
figures on the dial are originally obtained by numerous
comparisons with a standard mercurial barometer, and the scale is
graduated to correspond with the mercurial barometer.
From the illustration here given you will notice the pointer and
scale of the “A. G” aero-barograph, which is used by many of
our leading airmen, and which, as we have said, is a development
of the aneroid barometer. The need of a self-registering scale
to a pilot who is competing in an altitude test, or who is trying
to establish a height record, is self-evident. He need not
interfere with the instrument in the slightest; it records and
tells its own story. There is in use a pocket barograph which
weighs only 1 pound, and registers up to 4000 feet.
It is claimed for the “A. G.” barograph that it is the most
precise instrument of its kind. Its advantages are that it is
quite portable–it measures only 6 1/4 inches in length, 3 1/2
inches in width, and 2 1/2 inches in depth, with a total weight
of only 14 pounds–and that it is exceptionally accurate and
strong. Some idea of the labour involved in its construction may
be gathered from the fact that this small and
insignificant-looking instrument, fitted in its aluminium case,
costs over L8.
CHAPTER XLII
How an Airman finds his Way
In the early days of aviation we frequently heard of an aviator
losing his way, and being compelled to descend some miles from
his required destination. There are on record various Motel Best Western Salisbury Inn In Salisbury, North Carolina instances
where airmen have lost their way when flying over the sea, and
have drifted so far from land that they have been drowned. One
of the most notable of such disasters was that which occurred to
Mr. Hamel in 1914, when he was trying to cross the English
Channel. It is presumed that this unfortunate pilot lost his
bearings in a fog, and that an, accident to his machine, or
a shortage of petrol, caused him to fall in the sea.
There are several reasons why air pilots go out of their course,
even though they are supplied with most efficient compasses. One
cause of misdirection is the prevalence of a strong side wind.
Suppose, for example, an airman intended to fly from Harwich to
Amsterdam. A glance at the map will show that the latter place
is almost due east of Harwich. We will assume that when the
pilot leaves Earth at Harwich the wind is blowing to the east;
that is, behind his back.
Now, however strong a wind may be, and in whatever direction it
blows, it always appears to be blowing full in a pilots face.

May 14th, 2008 | Posted in Uncategorized | No Comments

NORMAL PRESSURE

NORMAL PRESSURE.–Now there is another term
much used which needs explanation, and that is
normal pressure. A pressure of this kind
against a plane is where the wind strikes it at
right angles. This is illustrated in Fig. 4, in
which the plane is shown with the wind striking
it squarely.
It is obvious that the wind will exert a greater
force against a plane when at its normal. On the
other hand, the least pressure against a plane is
when it is in a horizontal position, because then
the wind has no force against the surfaces, and
the only effect on the drift is that which takes
place when the wind strikes its forward edge.
_Fig. 4. Normal Air Pressure_
_Fig. 5. Edge Resistance_
HEAD RESISTANCE.–Fig. 5 shows such a plane,
the only resistance being the thickness of the
plane as at A. This is called head resistance,
and on this subject there has been much controversy,
and many theories, which will be considered
under the proper headings.
If a plane is placed at an angle of 45 degrees
the lift and the drift are the same, assumedly, because,
if we were to measure the power required
to drive it forwardly, it would be found to Kpin 101 Mhz Pinedale equal
the weight necessary to lift it. That is, suppose
we should hold a plane at that angle with a heavy
wind blowing against it, and attach two pairs of
scales to the plane, both would show the same
pull.
_Fig. 6. Measuring Lift and Drift_
MEASURING LIFT AND DRIFT.–In Fig. 6, A is the
plane, B the horizontal line which attaches the
plane to a scale C, and D the line attaching it to
the scale E. When the wind is of sufficient force
to hold up the plane, the scales will show the same
pull, neglecting, of course, the weight of the
plane itself.
PRESSURE AT DIFFERENT ANGLES.–What every
one wants to know, and a subject on which a
great deal of experiment and time have been expended,
is to determine what the pressures are at
the different angles between the horizontal, and
laws have been formulated which enable the pressures
to be calculated.
DIFFERENCE BETWEEN LIFT AND DRIFT IN MOTION.–The
first observation is directed to the differences
that exist between the lift and drift,
when the plane is placed at an angle of less than
45 degrees. A machine weighing 1000 pounds
has always the same lift. Its mass does not
change. Remember, now, we allude to its mass,
or density.
We are not now referring to weight, because
that must be taken into consideration, in the
problem. As heretofore stated, when an object
moves horizontally, it has less weight than when
at rest. If it had the same weight it would not
move forwardly, but come to rest.
When in motion, therefore, while the lift, so
far as its mass is concerned, does not change, the
drift does decrease, or the forward pull is less
than when at 45 degrees, and the decrease is less
and less until the plane assumes a horizontal position,
where it is absolutely nil, if we do not consider
head resistance.
TABLES OF LIFT AND DRIFT.–All tables of Lift
and Drift consider only the air pressures. They
do not take into account the fact that momentum
takes an important part in the translation of an
object, like a flying machine.
A mass of material, weighing 1000 pounds while
at rest, sets up an enormous energy when moving
through the air at fifty, seventy-five, or one hundred
miles an hour. At the latter speed the movement
is about 160 feet per second, a motion which
is nearly sufficient to maintain it in horizontal
flight, independently of any plane surface.
Such being the case, why take into account only
the angle of the plane? It is no wonder that
aviators have not been able to make the theoretical
considerations and the practical demonstrations
agree.
WHY TABLES OF LIFT AND DRIFT ARE WRONG.–
A little reflection will show why such tables are
wrong. They were prepared by using a plane
surface at rest, and forcing a blast of air against
the plane placed at different angles; and for determining
air pressures, this is, no doubt, correct.

May 12th, 2008 | Posted in Uncategorized | No Comments

The angle of ascension in the planes need not

The angle of ascension in the planes need not
exceed 25 degrees so the frame does not require
an angle of more than 17 degrees. This is shown
in Fig. 54, where the machine is in a position
ready to take the air at that angle, leaving ample
room for the steering rudder.
ACTION IN ALIGHTING.–Also, in alighting, the
machine is banked, practically in the same
position thus shown, so that it alights on the rear
wheels O.
The motor U is usually mounted so its shaft is
midway between the planes, the propeller V being
connected directly with the shaft, and being behind
the planes, is on a medial line with the
machine.
The control planes L, M, N, are all connected up
by means of flexible wires with the aviator at the
set W, the attachments being of such a character
that their arrangement will readily suggest themselves
to the novice.
THE MONOPLANE.–From a spectacular standpoint
a monoplane is the ideal flying machine. It
is graceful in outline, and from the fact that it
closely approaches the form of the natural flyer,
seems to be best adapted as a type, compared with
the biplane.
THE COMMON FLY.–So many birds have been
cited in support of the various flying theories that
the house fly, as an example has been disregarded.
We are prone to overlook the small insect, but it
is, nevertheless, a sample which is just as potent
to show the efficiency of wing surface as the condor
or the vulture.
The fly has greater mobility than any other flying
creature. By the combined action of its legs
and wings it can spring eighteen inches in the
tenth of a second; and when in flight can Kspa 1510 Khz Ontario change
its course instantaneously.
If a sparrow had the same dexterity, proportionally,
it could make a flight of 800 feet in the
same time. The posterior legs of the fly are the
same length as its body, which enable it to spring
from its perch with amazing facility.
_Fig. 55. Common Fly. Outstretched Wings._

May 9th, 2008 | Posted in Uncategorized | No Comments

Contrary to the usual custom

Contrary to the usual custom, we place the horizontal rudder in
front of the aeroplanes at a negative angle and employ no
horizontal tail at all. By this arrangement we obtain a forward
surface which is almost entirely free from pressure under
ordinary conditions of flight, but which even if not moved at
all from its original position becomes an efficient
lifting-surface whenever the speed of the machine is
accidentally reduced very much below the normal, and thus
largely counteracts that backward travel of the centre of
pressure on the aeroplanes which has frequently been productive
of serious injuries by causing the machine to turn downward and
forward and strike the ground head-on. We are aware that a
forward horizontal rudder of different construction has been
used in combination with a supporting surface and a rear
horizontal-rudder; but this combination was not intended to
effect and does not effect the object which we obtain by the
arrangement hereinbefore described.
We have used the term aeroplane in this specification and the
appended claims to indicate the supporting surface or supporting
surfaces by means of which the machine is sustained in the air,
and by this term we wish to be understood as including any
suitable supporting surface which normally is substantially
flat, although. Of course, when constructed of cloth or other
flexible fabric, as we prefer to construct them, these surfaces
may receive more or less curvature from the resistance of the
air, as indicated in Fig. 3.
We do not wish to be understood as limiting ourselves strictly
to the precise details of construction hereinbefore described
and shown in the accompanying drawings, as it is obvious that
these details may be modified without departing from the
principles of our invention. For instance, while Big Sky Owners Association Inc K09lp we prefer the
construction illustrated in which each aeroplane is given a
twist along its entire length in order to set its opposite
lateral margins at different angles, we have already pointed out
that our invention is not limited to this form of construction,
since it is only necessary to move the lateral marginal
portions, and where these portions alone are moved only those
upright standards which support the movable portion require
flexible connections at their ends.

May 6th, 2008 | Posted in Uncategorized | No Comments

Zeppelins in and out of their sheds is

Zeppelins in and out of their sheds is, so far, the best
devised: this consists of heavy trucks running on rails through
the sheds and out at either end; on descending, the trucks are
run out, and the airship is securely attached to them outside
the shed; the trucks are then run back into the shed, taking the
airship with them, and preventing any possibility of the wind
driving the envelope against the side of the shed before it is
safely housed; the reverse process is adopted in launching,
which is thus rendered as simple as it is safe.
VI. THE AIRSHIP COMMERCIALLY
Prior to the war period, between the years 1910 and 1914, a
German undertaking called the Deutsche Luftfahrt Actien
Gesellschaft conducted a commercial Zeppelin service in which
four airships known as the Sachsan, Hansa, Victoria Louise, and
Schwaben were used. During the four years of its work, the
company carried over 17,000 passengers, and over 100,000 miles
were flown without incurring one fatality and with only minor
and unavoidable accidents Motel Comfort Inn Miles City In Miles City, Montana to the vessels composing the service.
Although a number of English notabilities made voyages in these
airships, the success of this only experiment in commercial
aerostation seems to have been forgotten since the war. There
was beyond doubt a military aim in this apparently peaceful use
of Zeppelin airships; it is past question now that all Germanys
mechanical development in respect of land sea, and air transport
in the years immediately preceding the war, was accomplished
with the ulterior aim of military conquest, but, at the same
time, the running of this service afforded proof of the
possibility of establishing a dirigible service for peaceful
ends, and afforded proof too, of the value of the dirigible as a
vessel of purely commercial utility.
In considering the possibility of a commercial dirigible
service, it is necessary always to bear in mind the
disadvantages of first cost and upkeep as compared with the
aeroplane. The building of a modern rigid is an exceedingly
costly undertaking, and the provision of an efficient supply of
hydrogen gas to keep its compartments filled is a very large
item in upkeep of which the heavier-than-air machine goes free.
Yet the future of commercial aeronautics so far would seem to
lie with the dirigible where very long voyages are in question.

May 4th, 2008 | Posted in Uncategorized | No Comments

The American planes took advantage of those winds

The American planes took advantage of those winds in their flight to
the Azores, that much is certain. But they were well protected with
destroyers, were not pushing their planes to the limit, and did not
depend upon favoring winds. That the NC-1 and the NC-3 reached the
Azores, but did not make safe landings in the harbor after their long
flight, is one of the fortunes of flying which must not reflect upon
the American effort as a whole.
The French route which Lieutenant Fontan, of the French army, tried
twice, and on which he was twice forced to land because of engine
trouble, was laid to take advantage of favoring winds. Across the
South Atlantic the winds prevail in the spring of the year from east
to west, contrary to the winds on the northern course. A twenty-mile
wind at the back of a flier jumping the one thousand eight hundred
miles across this bit of water would add just twenty miles an hour to
the ground speed of the machine.
Capt. John Alcock and Lieut. Arthur Whitten Brown startled Security Systems South City Sioux Tri-tec Innovations the entire
world on June 15, 1919, with the success of their straight flight
from Newfoundland to Ireland, covering 1,960 land miles in 16 hours
and 12 minutes, at an average speed of 120 miles an hour. Not only was
this the longest non-stop flight over land or water on record, but the
greatest international sporting event. As such, though credit for the
first flight of the Atlantic belongs to the American NC-4, it eclipses
for daring the flight of the American navy. The Vickers-Vimy plane
left St. Johns, Newfoundland, on June 14th, at 4.29 P.M., Greenwich
mean time, and landed at Clifden, Ireland, on June 15th, at 8.40 A.M.,
Greenwich mean time. The machine was equipped with two 375-horse-power
Rolls-Royce Eagle engines, and had a wing span of 67 feet and measured
42 feet 8 inches over all.

May 1st, 2008 | Posted in Uncategorized | No Comments

This experiment was really made in order to prove

This experiment was really made in order to prove the stability
of an air-ship after a comparatively great weight was suddenly
removed from it. Lord Edward Grosvenor, who is attached to the
Royal Flying Corps, was one of the eyewitnesses of the descent.
In speaking of it he said: “We all think highly of Major
Maitlands performance, which has shown how the difficulty of
lightening an air-ship after a long flight can be surmounted.
During a voyage Us Retail Carparts. of several hours a dirigible naturally loses gas,
and without some means of relieving her of weight she might have
to descend in a hostile country. Major Maitland has proved the
practicability of members of an air-ships crew dropping to the
ground if the necessity arises.”
A descent in a parachute has also been made from an aeroplane by
M. Pegoud, the daring French airman, of whom we speak later. A
certain Frenchman, M. Bonnet, had constructed a parachute which
was intended to be used by the pilot of an aeroplane if on any
occasion he got into difficulties. It had been tried in many
ways, but, unfortunately for the inventor, he could get no pilot
to trust himself to it. Tempting offers were made to pilots of
world-wide fame, but either the risk was thought to be too great,
or it was believed that no practical good would come of the
experiment. At last the inventor approached M. Pegoud, who
undertook to make the descent. This was accomplished from a
great height with perfect safety. It seems highly probable that
in the near future the parachute will form part of the equipment
of every aeroplane and air-ship.
CHAPTER VII
Some British Inventors of Air-ships
The first Englishman to invent an air-ship was Mr. Stanley
Spencer, head of the well-known firm of Spencer Brothers, whose
worksare at Highbury, North London.
This firm has long held an honourable place in aeronautics, both
in the construction of air-craft and in aerial navigation.
Spencer Brothers claim to be the premier balloon manufacturers in
the world, and, at the time of writing, eighteen balloons and two
dirigibles lie in the works ready for use. In these works there
may also be seen the frame of the famous Santos-Dumont air-ship,
referred to later in this book.
In general appearance the first Spencer air-ship was very similar
to the airship flown by Santos-Dumont; that is, there was the
cigar-shaped balloon, the small engine, and the screw propellor
for driving the craft forward.

April 30th, 2008 | Posted in Uncategorized | No Comments

Even more serious

Even more serious, however, is the general public failure to realize
the gift which is within their reach. Flying was first a circus stunt
and later a war wonder. The solid practical accomplishments have been
lost sight of in the weird or the spectacular. People who marveled
when a British plane climbed up nearly six miles into the air, or
30,000 feet, where its engine refused to run and its observer fainted,
failed generally to analyze what the invasion of this new element
would mean in the future of mankind.
What is now needed is a big, broad imagination to seize hold of this
new thing and galvanize it into actual every-day use. There are many
skeptics, of course, many who point out, for instance, that the
element of cost is prohibitive. This is both fallacious in reasoning
and untrue in fact. A modern two-seated airplane, even to-day, costs
not over $5,000, or about Accommodation Knights Inn Indianapolis In In Indianapolis, Indiana the price of a good automobile. Very soon,
with manufacturing costs standardized and the elements of newness worn
off, this price will fall as sharply as it has already fallen during
the war.
But what, after all, is cost in comparison with time? Modern
civilization will pay dearly for any invention which will increase
ever so little its hours of effectiveness. The great German liners
before the war lavished money without stint to save a day or two in
crossing the Atlantic. The limited express trains between New York,
Boston, Washington, and Chicago have for years made money by carrying
busy men a few hours more quickly to their destination. What will not
be paid if these times of travel can be reduced practically to half?

April 28th, 2008 | Posted in Uncategorized | No Comments

The beginning of the competition consisted in

The beginning of the competition consisted in assembling the
machines against time from road trim to flying trim. Codys
machine, which was the only one to be delivered by air, took 1
hour and 35 minutes to assemble; the best assembling time was
that of the Avro, which was got into flying trim in 14 minutes 30
seconds. This machine came to grief with Lieut. Parke as pilot,
on the 7th, through landing at very high speed on very bad
ground; a securing wire of the under-carriage broke in the
landing, throwing the machine forward on to its nose and then
over on its back. Parke was uninjured, fortunately; the damaged
machine was sent off to Manchester for repair and was back again
on the 16th of August.
It is to be noted that by this time the Royal Aircraft Factory
was building aeroplanes of the B.E. and F.E. types, but at the
same time it is also to be noted that British military interest
in engines was not sufficient to bring them up to the high level
attained by the planes, and it is notorious that even the
outbreak of war found England incapable of providing a really
satisfactory aero engine. In the 1912 Trials, the only machines
which actually completed all their tests were the Cody biplane,
the French Deperdussin, the Hanriot, two Bleriots and a Maurice
Farman. The first prize of L4,000, open to all the world, went
to F. S. Codys British-built biplane, which complied with all
the conditions of the competition and well earned Motel Motel 6 In Albuquerque, New Mexico its official
acknowledgment of supremacy. The machine climbed at 280 feet per
minute and reached a height of 5,000 feet, while in the landing
test, in spite of its great weight and bulk, it pulled up on
grass in 56 yards. The total weight was 2,690 lbs. when fully
loaded, and the total area of supporting surface was 500 square
feet; the motive power was supplied by a six-cylinder 120
horsepower Austro-Daimler engine. The second prize was taken by

April 25th, 2008 | Posted in Uncategorized | No Comments

All about air force

Indeed

It is moved in one direction for increase of air

NORMAL PRESSURE

The angle of ascension in the planes need not

Contrary to the usual custom

Zeppelins in and out of their sheds is

The American planes took advantage of those winds

This experiment was really made in order to prove

Even more serious

The beginning of the competition consisted in

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