Here are two very useful videos about the semi-circular rule. The first one is in English, the second one in French:
Pour la seconde vidéo, on peut ajouter que si les niveaux de vol 55, 75 et 85 (pour les routes magnétiques vers l’est) sont valables en VFR (régime de vol à vue), on devra emrunter en vol IFR (vol aux instruments) les niveaux de vol 50, 70, 80 et 90 par exemple. C’est à dire qu’en IFR on n’utilise pas les niveaux de vol se terminant par 5 mais par 0 et cela est valable pour les routes magnétiques allant vers l’ouest (FL 80, FL 90, etc). La règle semi-circulaire est utile aussi pour le module NRS (Navigation, Réglementation et Sécurité des vols) au BIA-CAEA. D’autres informations très intéressantes sont disponibles sur ces chaines Youtube:
What is more natural than looking back over major aviation innovations of the Great War today, the anniversary of the Armistice? Here is a very interesting video posted by the BBC on how the fighter pilots dealt with reconnaissance, bombing missions and dogfight techniques. Primitive flight controls are well explained as is the interest of performing missions with a triplane aircraft – three sets of wings are necessarily more narrow, providing the pilot with a better visual field.
From the flimsy Blériot XI to Sopwiths and Fokkers, the first aces developed early methods that are always taught in fighter schools even though beyond-visual-range air combat has taken over since. Major Charles Tricornot de Rose was considered by many as the father of air fighting as early as 1914. Then as shown in this video, the German ace Oswald Boelcke laid out a first set of rules for dogfighting called the Dicta Boelcke. Pilots’ life expectancy was not measured in years but in weeks.
This is what the next Airbus aircraft should be in the 40 years to come. The new Airbus concept is to match the passengers’ demand.
According to a consultation with the customers, 96% of them want more environmentally sustainable aeroplanes. The aircraft of the future will have to be fully recyclable, more sustainable ie eco-efficient, and less stressful:
Now, the leading aircraft manufacturer is using the feedback to paint its vision of sustainable aviation in 2050.
There is a need among the passengers to reduce the time spent in airports. The new Airbus concept cabin will integrate an additional door for faster boarding, and exit. This airliner of the future will reduce its noise, and carbon emmissions. It will use the latest technologies – bionic structure, blended airframe, enhanced laminar flow and noise reduction; blended U-tail, biomorphing seats able to collect the passenger’s body energy, cutting-edge relaxation systems, human body thermal recycling, dramatic panoramic view, World Wide Web access, round of golf, etc. Watch the video:
The British Harriers were to be replaced by the F-35Cs. Do you remember? You may have learnt from the recent news that the carrier variant of the Lockheed Martin Aeronautics Joint Strike Fighter – CV JSF (Carrier Vessel variant’s Joint Strike Fighter) – F-35C was unable to catch the wire onboard the aircraft carrier during the latest landing tests.
Strange as it may seem, the F-35C’s designers may have not forecast what would unfold during a test flight while landing on an aircraft carrier:
The arresting hook (tailhook) never engaged the arresting wire as the clearance between the tail hook and the main landing gear’s tyre tread is too short for such a speed. An F-35C Lightning II missing her carrier landing has been reported even though some U.S. officials would have dismissed such information which might result from simulated tests.
Added to that is a software bug which had grounded the CV JSF for 6 days a few month earlier for the fifth-generation fighter aircraft might have encountered wing-folding input while flying!
As a result, the British Ministry of Defence might find a Plan-B solution as these design flaws, and some others which date back to November 2011 are deemed unacceptable for such an expensive fighter aircraft – $139.5 million for the F-35C (CATOBAR – Catapult Assisted Take Off But Arrested Recovery), and $150 million for the F-35B (STOVL – Short Take-Off and Vertical Landing). The latter can land on carriers but she is more expensive, and the JSF program costs have already increased several times.
Moreover, the JSF would not be able to fire AMRAAM air-to-air missiles as reported in this video:
And there’s even more: according to a Pentagon study team report, 13 areas of concern that remained to be addressed in the F-35 would have been identified. For instance, the Helmet Mounted Display System (HMDS) would not work properly…
The British MoD is therefore considering the purchase of either F/A-18E Super Hornets or RAFALEs for the RAF. The French Dassault which has already lost the Swiss NAC tender due to replace the Swiss Air Force’s F-5s, would be proposing a new offer with 18 RAFALEs at a cost deemed lower than the 22 SAAB Gripens’ one according to the Swiss press.
The RAFALE is still in competition with the Eurofighter in the Indian MMRCA tender. the Indian officials are expected to make a decision this week. To be continued… ==> We have just learnt (on January 31, 2012) that the RAFALE has won the MMRCA tender… 🙂