The Concorde crash epitomizes the problems of
aircraft safety in more ways than one. At the root of the
problem is ethics and morality; right above that level is
aircraft design.
For more than six decades, man has known how
to improve aircraft safety and has had the technology to
implement that improvement. An article entitled Crashes CAN
be harmless" which appeared in the June 1941 issue of Mechanix
Illustrated, summed up the solution to aircraft safety better
than any other article before or since and can be reduced to
three main points:
"Research departments can easily boast that they
have developed instruments and gadgets that make crashes
entirely avoidable. They can add these things to the pilots'
compartment until the walls are cluttered up with them from
top to bottom. They can evolve all manner of flapping,
fluttering doo-dads that pop out of tails and wings and
accomplish some purpose or other. For the most part, these
things work quite well, but most of them need considerable
attention from the pilot." ... More gadgets won't
necessarily prevent accidents.
- Accidents continue to happen and there's no sense in
claiming they can be entirely prevented. The only
intelligent thing to do is to build the planes to withstand
as violent a crash as possible.
- When the cabin of a plane stays in one piece the
passengers stand a chance in any crash. ... Modern cars can
roll over, end up on the wheels again, and drive away with
pale but unscathed passengers. ... think about it. The
designers and engineers must build planes so the pilot and
passenger compartment will remain intact above all else in
a crash. The present tubular fuselages have frequently
demonstrated their fragility at the cost of both passenger
and crew fatalities.
Mechanix illustrated
left out the isolation of fuel tanks from engines and landing
gear but in 1947, the Secretary of the National Fire
Protection Association, George Tryon, III, addressed the issue
in the Journal of the aforementioned association (he is quoted
further down).
Nothing has changed, on
the contrary:
- Aircraft fuselage structure
surrounding passengers is at an all-time low.
- Regulatory agencies and
manufacturers continue to focus on accident avoidance
instead of accident survivability.
The number of gadgets, which are
installed on, or being considered for installation in
conventional aircraft continues to rise, adding weight to
aircraft and increasing the pilot workload.
- Landing-gear, fuel tanks and
engines still have not been segregated.
- Finally, take-off and Landing
speeds are at an all-time high - the Concorde exemplifying
the problem.
In the aftermath of the Concorde crash,
Flight International of August 1-7, 2000, p. 5, suggests
several solutions to informing a pilot that his plane has
caught fire. One of these is installation of video cameras so
the pilot can see his plane and an other one suggested by
Flight International is better communications between the
pilot and the tower. Neither is acceptable for neither takes
into account the source of the problem: attaching
landing-gear and engines to fuel tank supporting structure in
combination with excessive take-off and landing speeds on
overstressed tires.
To give our readers an idea of the dangers of
high-speed take-offs and landings and the energy stored in an
aircraft tire, here are a few excerpts of the August 7, 2000
issue of Air Safety Week (
) which does an excellent job of
highlighting the problem:
"Bursting airplane
tires are like 'rubber bombs.' Under extreme
conditions of pressure and heat buildup, an exploding
tire can release the energy equivalent of 4-5 sticks of
dynamite
. The potential for cascading, possibly catastrophic damage
to nearby fuel tanks and engines is a well-recognized hazard.
The fiery July 25 crash of an Air France Concorde
has cast the issue of bursting tires into chilling focus.
French officials have said that tire debris from the
accident airplane was found on the runway at Paris' Charles de
Gaulle International Airport." [emphasis added]
Air Safety Week further illustrates the
destructive capability of an inflated aircraft tire at
standstill by quoting from an article which appeared about 20
years ago in a U.S. Navy publication called Mech: "The
tire/wheel assembly exploded, tearing the hub into two pieces.
One piece bounced off a railing, hitting one helper in the
head, killing him instantly. His body was found 10 feet from
the spot where he had been standing. The other portion of the
hub struck the crew chief with so much force that he was
thrown some 30 feet. His head and right arm were severed from
his body. All of the wheel bolts were found bent ... and the
threads on five bolts were stripped. Only four of the wheel
nuts were found."
Air Safety Week
continues: "The author, Navy materials engineer Marcelo
Fontanoz, cautioned that an inflated aircraft
tire/wheel assembly needs the cautious handling of 'an armed
bomb
.' " [emphasis added]
This case illustrates perfectly why we've
been making such a big deal about attaching landing-gear to
fuel tank supporting structure. With this problem in mind, how
would better communications with the tower or even video
cameras help in preventing the deaths of dozens or hundreds of
people? It doesn't. It adds weight to the plane or work-load
for the pilot (or both) and it gives everyone a false sense of
security because everyone is busy. Being busy does not express
efficiency.
Almost sixty years ago, Mechanix Illustrated
reminded us that building a cabin strong enough to survive an
impact gives passengers a chance to survive, that adding
gadgets doesn't solve any problems and that it is futile to
assume that accidents can be averted.
The Concorde crash could have been foreseen
at least as far back as 1947. GEORGE H. TRYON, III, Secretary
of the National Fire Protection Association, in the Quarterly
of the National Fire Protection Association (Vol 40, No. 4) of
April 1947 on page 264 said:
"Moving the landing gear inboard
and strengthening the fuselage to absorb the shock of
landing would eliminate applying stress to the fuel tank
supporting structure. This revision of the commonplace has
been accomplished in the Burnelli "lifting wing" design.
Another feature of this latter type aircraft is the shifting
of fuel tanks so that they are not in direct line with the
power plants and their exhaust outlets."
Whether the crash of the
Concorde was caused by an exploding engine, exploding tire
or debris puncturing the fuel tanks is irrelevant as in any
of these cases, it was the proximity of the landing-gear,
fuel-tanks and engines that led to the rapid spread of the
fire. It was this combination which allowed the events which
led to the horrible loss of life of the Concorde passengers
(in this particular case) to occur with such
swiftness.
However, the real
culprits behind the deaths of the Concorde victims and so many
others is only indirectly the combination of landing-gear,
fuel tanks and engines. It is rather an informal combination
of men who would rather do what their superiors tell them
because they fear losing their jobs, because they value what
they conceive to be a secure and stable job more than the
lives of their fellow-men. After-all most of those who die are
unknown to most of us. Wasn't it precisely this facelessness
of victims that allowed those who knew about it to allow so
many to perish in so many concentration camps whether in
Russia under Stalin, in Cambodia under the Khmer Rouge, in
Germany under Hitler, to name only three countries?
The problem we are faced
with has been and remains more than one of aircraft safety; we
are lacking honesty, integrity and morality in many places of
industry and government. We may not be able to change others,
but we can change the way we act and the way we live. The
future always starts now and is dependent on whether we make
moral and ethical decisions or not. Those in the aircraft
industry / government who have made unethical, immoral,
self-interested decisions are to blame for the situation we
are facing now, but it isn't limited to them. Those who have
known about Burnelli and have chosen to do nothing because
they believe that they are powerless are to blame too. But
blame doesn't achieve anything unless those who are to blame
recognize their mistakes and change their ways. Is life only
about money or is there more to it than meets the eye? What
can I do?
There isn't a single
contribution to the betterment of society that is too small to
be valued. Every little bit counts. How are you going to live
your life?
Think about it!