Tag Archives: An-124

Quiz: How loaded do US Air Force transport aircraft operate?

Let me share with you one funny quiz I did for some colleagues at the office:

On average, how loaded do US Air Force transport aircraft, C-130 Hercules and C-17 Globemaster, operate? (as a percentage of their maximum payload capacity: let’s take the figures reported by the US Air Force, ~16.5 tonnes for the C-130 -“maximum normal payload”-and 77.5 tonnes for the C-17)

Before continuing reading below, take your chance in the poll below, where I offer 4 possible responses: 3 from my colleagues’ responses to the quiz plus the correct one:

Background. Before posing the quiz to my colleagues we were commenting on a piece of news of an Antonov 124 which had landed in Spain to load some equipment weighing 1,000 kg. The An-124 reported payload capacity is 150 metric tonnes. For those not being number-crunchers: that means using the one of the biggest cargo aircraft to load it up to 0.7% of its capacity.

After having read this last paragraph you may have changed your opinion as to which is the correct answer to the quiz.

I based the correct result on a news release from the US Air Force dating from the beginning of 2007. At that time I was working in Airbus Military strategy where I would like to pick up any number related to aircraft and play with it (the hobby has stayed). That release offered figures US Central Command air transport operations, including operations Enduring Freedom (Afghanistan) and Iraqi Freedom. Find the results from that short number play:

US Air Force average loads (in tonnes) for C-130 and C-17 during 2005 and 2006.

US Air Force average loads (in tonnes) for C-130 and C-17 during 2005 and 2006.

If you do the math, you will immediately get the right answer: C-130 Hercules, 22% and C-17 Globemaster, 17%.

“What a waste of resources!” you may think. A former senior colleague pointed to that result: “You buy a Mercedes to travel with the family and baggage, then on a Sunday when having to go out to get some bread or any week day when you go alone to work… when you get to the garage and find a Mercedes… Guess which car you take?”

1 Comment

Filed under Aerospace & Defence

After the year 2015, there will be no airplane crashes

When I was writing in the previous post about Alberto Dubois idea of evolution being exponential I had in mind the book “Augustine’s Laws”, to which I have referred many times in this blog.

Today, I read a very good article in last week’s issue of The Economist, “Defence spending in a time of austerity”, which describes the current situation of defence budgets around the World and how it will affect many programmes…

The article itself is referring to the computing evolution depicted by Dubois and some other exponential trends identified by Augustine, such as the increased use of computer power and software.

I especially liked the update of Augustine’s chart for the Law XVI which says:

“In the year 2054, the entire defence budget will purchase just one aircraft. This aircraft will have to be shared by the Air Force and Navy 3½ days each per week except for leap year, when it will be made available to the Marines for the extra day.”

Augustine's Law XVI chart, updated by The Economist.

Thus, in the last 25 years, since Augustine wrote his book, the business has not improved much. This situation provokes that different countries have to share weapons, e.g., C-17 transport aircraft (Strategic Aircraft Capability, operated for several countries from Hungary), SALIS (“Strategic Airlift Interim Solution”, chartering of ex-soviet An-124 to NATO countries)…

One of the most striking situations that may come to happen is that UK and France share two aircraft carriers. Carriers were considered essential to have control over oceans… however, if France is going to scale its fleet down to one single carrier: what would happen during the long months when it will be in overhaul?

Lately there have been much discussion about this sharing scheme, though it is still denied by officials. Consider that just back in 1940, the British Royal Navy destroyed much of the French fleet in the Operation Catapult.

Other interesting point is the trend towards using unmanned aircraft versus piloted ones. Already in the “Aircraft Investment Plan Fiscal Years (FY) 2011-2040” (PDF, 0.2MB) that the US Air Force submitted together with its FY11 budget request, it forecasted that the number of unmanned aircraft will almost triple in the next ten years, while the rest of fleets would be either just renewed or decreased.

Nevertheless, this may never come to happen if we take Augustine’s Law Number XIV:

“After the year 2015, there will be no airplane crashes. There will be no takeoffs either, because electronics will occupy 100 percent of every airplane’s weight”.


Filed under Aerospace & Defence