Capt. Ken's comments |
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March |
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Parachuting for fun and safety |
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Skydive City located at Zephyrhills, Florida, uses three de Havilland Twin Otters. COPA archives photo |
By Ken Armstrong
SAFETY
Military jet pilots, aerobatics pilots, and aviators in general who fly under
conditions that could result in catastrophic airframe failure (and that really
includes all of us) wear emergency parachutes.
Structural disintegration of an aircraft can happen under unforeseen
circumstances and therefore we are all under the influence when it comes to a
potential, unanticipated break up.
Many factors can contribute to an inadvertent break up and pilot error is the
most likely possibility. Surprised? Overcontrolling when pulling out of a high
"g" dive is perhaps the most common.
Never happen to you because you only fly IFR or VFR on perfect days? During IFR
flight the inadvertent decoupling of the autopilot or even an interrupted
crosscheck can lead to an unusual attitude such as a steep nose down or inverted
dive.
By the time the pilot catches the smoothly entered diversion from level flight
he/she may well execute the control pull back of the decade and the possible
departure of the tail or wings – thereby terminating all lives on board.
Couple this event with all the other possible reasons for a structural failure
(including maintenance errors and corrosion) and you may not wish to fly again.
Realistically, good maintenance and sound piloting minimize the potential for an
aircraft folding up – but there is an additional safety factor that you can
employ to maximize survival – a parachute.
I obtained my first parachute 34 years ago in a trade for my over/under .22/20
gauge shotgun. In those days I was flying sport parachutists off the military
base at Namao (Edmonton) on the weekends. (Flying heavy helicopters
professionally five days a week wasn’t enough aviating for me).
Potential failure of the tail was a possibility with five jumpers exiting the
Cessna 182 during each drop as an accidental deployment could take out the tail.
Moreover a jumper could get tangled on the stabilizer virtually eliminating any
controllability during an inadvertent opening of a chute whilst in the cabin.
Senior, concerned jumpers tactfully suggested a chute would be prudent.
That bulky military surplus product was replaced with a semi sport-jumping rig
about two decades ago. So, what should you do about an emergency chute? Since I
am not a broad-based expert on parachutes, this dissertation should only serve
as an introduction – please seek additional advice before buying.
You will need to consider costs and parachute capabilities. After considering
your budget limits, you will need to decide on a seat pack or a backpack based
on the aircraft you will fly.
Generally, the backpack is preferable for most aircraft (other than those that
were designed to be flown with seat packs – namely many military aircraft).
Next you will need to decide on a round canopy (considered old fashioned by
jumpers) or a rectangular canopy which is more flyable in the hands of a trained
individual. Will you only use the chute in an emergency or will you be jumping
it for pleasure.
I suggest the latter so you will be comfortable with departing an aircraft as
too many pilots with chutes, but no training, stay with a crippled aircraft –
ostensibly because they are afraid to jump.
I prefer a slim line back pack (about four inches thick) as it can be a
challenge to fit into some of the amateurbuilt cockpits with their minimalist
cockpits designed to cheat drag with narrow and tight proportions. Even then, I
must leave the chute behind quite often as the depth from the back of the pack
to the forward limit of my belly interferes with full control movement – be sure
to check for your applications.
There are many other factors to consider such as controllability of the chute,
quality of quick releases, rip cord placement and opening characteristics. Other
advanced equipment will open your chute automatically at a preset altitude in
case you forget or are perhaps injured. It isn’t cheap – but neither are
funerals.
On that note, I’d like to tell you why I took the jump course many years ago.
The RCAF neglected to teach its jet pilots the full characteristics of their
ejection equipment and how to land with a parachute – and likely for good
reason.
The chutes were high porosity chutes which means they allow a lot of air to flow
through them and this resulted in a rate of decent of approximately 34 feet per
second (about 30 miles an hour). Sport chutes of the day were half that with a
vertical rate of 17 fps.
The military chutes were high porosity as they needed to be capable of opening
at extremely high speeds without blowing apart. I only know of one pilot who
ejected without breaking an ankle, leg or back. Mind you, their lives were
saved.
Therefore, it seemed practical to me to learn how to control a chute so I could
turn into the wind for landing (minimize the speed I would be dragged at over
the ground obstacles) and to learn how to land in a manner that would preclude
injury. May I suggest at least a basic jump course for those of you planning to
purchase a chute as well?
FOR FUN
After thousands of hours flying jets, helicopters and transport aircraft, my
first "real" flight was under the miniscule wing of a hang glider hurtling down
Big White Ski Area’s heavily moguled expert slope.
My instructor miraculously skied straight down that hill controlling the wing’s
angle of attack by manipulating the trailing edge. This precluded me killing
myself on my first "free flight."
The plunge was such a rush; I was hooked on basic flight. Flying under that tiny
wing taught me that minimalist flying allows us to more closely approximate
birds.
My first parachute flight continued that pursuit and now on Christmas day I am
waiting for the clouds to slide away and the winds to moderate so I can make my
first free fall from 13,000 feet above Zephyrhills, Florida.
Sport jumpers do not consider what we do in airplanes as flying – they call it
riding – and I can understand their point of view. Since the days when I dropped
thousands of skydivers at Namao, the world has changed and Linda and I are
absolutely enthralled with the flying skills of these aerial ballet artists.
The latest rage is vertical diving and you would have to see these advanced
jumpers in action to appreciate their ability to control all axis while they
plunge towards the terra very firma at 180 mph while cavorting in advanced
"dance" routines during their head first plummet.
Another advance is the joining of arms to legs with fabric wings which reduces
the rate of decent while increasing forward speed. This isn’t as easy as it
sounds and a number of "test-pilot sky-divers" have given their all during
flight testing.
Current state of the art chutes allow jumpers to fly at speeds up to 60 mph
under their chutes to increase "penetration" into the wind. These high
performance canopies also allow some rather spectacular maneuvering we would
typically label as aerobatics.
Elliptical wings and zero-porosity fabrics, as well as new suspension line
technologies have given the 'canopies' exponential leaps in performance over the
past 20 years. The downside is a much higher injury/fatality rate for sport
jumpers who push the performance limits.
Folks living on the Skydive base "Dropzone" at Zephyrhills during the winter are
immersed in a somewhat Canadian environment – if you don’t count the weather.
The general manager is transplanted from Newfoundland (although his accent has
evaporated) and the club is currently using three de Havilland Twin Otters –
with their Canadian PT-6 turbines. My jump instructor, Mick is from Ontario and
we are camped out in a Boler trailer from the same province.
This operation believes in the AFF (typically called PFF-Progressive Freefall at
the few places that use this technique in Canada) whereby a student begins
training with a free fall from 13,000 feet AGL – with two instructors "hovering"
in the air along side to ensure all goes well.
Another technique is the tandem jump where the instructor and student are
harnessed together to one large parachute (with a back up safety chute of
course). Still other organizations, such as the one I initially trained at,
believe static line jumps are the correct route for training. In this case, the
ripcord is attached to the aircraft and opens automatically when the student
jumps – similar to most military operations.
The basic training to obtain the American 'A' license costs about $1800-$2000 US
and takes about ten days and seven levels of training that begin with
approximately six hours of ground school. Once an individual has the
qualifications, he can jump at any of the registered clubs as this license is
recognized by all the advanced countries.
The costs and training programs are similar in Canada – however most of the
activity occurs during our summer. What better way than to train in Florida
during the winter and have the additional benefit of escaping our winter
wonderland?
The instructors at Skydive City have more than 50,000 jumps to their credit and
have all ratings such as US, Canadian and British association qualifications.
The facility is quite large with camping, and full amenities to turn a winter
holiday into a glorious experience.
There is even a parachute harness manufacturing facility on the grounds (The
city has three harness manufacturers, two rigging shops and a Tony Suits-suit
manufacturer).
The airport facility also boasts an Internet café and a snack bar that provides
full food services. The bar opens at dark when sky skydiving activities cease.
Having said that, I must add that an evening is set aside for night dive
qualifying from time to time and the event is most entertaining for spectators
as divers plunge with strobe lights and glowing chemical lights to help them
navigate amongst each other.
DIVING TO CONCLUSIONS
I believe many pilots involved in a broad spectrum of flying pursuits should
consider an emergency parachute and that jump training is a wise and pleasurable
experience. Afterwards, it is quite possible you will want to pursue free fall
sky skydiving, as it’s a maximum blast and quite addictive. Many of the divers
keep coming back because it is the maximum fun they can experience and they
apparently get the same adrenaline rush every time they exit the cargo doors.
For more information, you can contact Skydive at
info@skydivecity.com or visit their
website at www.skydivecity.com
Their address is POB 1599 Zephyrhills, FL 33542. Phone and fax numbers are (813)
783-9399 and 782-0599
Ken Armstrong has enjoyed 14,500 flight hours on more than 350 fixed and rotary wing aircraft. He provides aviation consulting/training services and flies his Diamond Extreme motor glider out of a grass strip near Victoria, B.C.
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