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Leading doctors have warned it is 'vital that lessons are learned' from the pandemic as the UK's official coronavirus death toll exceeded 50,000.
The British Medical Association (BMA) said the figures were a 'terrible indictment' of the Government's lack of preparation and organisation with regard to handling the virus.
The latest data showed 50,365 people had died in the UK within 28 days of testing positive for Covid-19, making it the first country in Europe to exceed 50,000 deaths.
Responding to the news, Dr Chaand Nagpaul, BMA council chairman, said: 'This is a point that should never have been reached.
© 2020 Nathan Stirk LEEK, ENGLAND - NOVEMBER 11: A man is seen shopping in the Market Town of Leek on November 11, 2020 in Leek, England. The United Kingdom will continue to impose lockdown measures until December 2 in an attempt to curb transmissions of the coronavirus (COVID-19). (Photo by Nathan Stirk/Getty Images)'In March, Professor Steve Powis said that if the public adhered to the nationwide lockdown the total toll could be kept below 20,000.
'Today's figure is a terrible indictment of poor preparation, poor organisation by the Government, insufficient infection control measures, coupled with late and often confusing messaging for the public.'
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He added: 'As we look towards the hope of a vaccine, it's vital that lessons are learned from the last nine months to ensure that nothing on this scale ever happens again.'
Meanwhile, scientists remained hopeful about the prospect of a vaccine.
Gallery: Second wave of COVID-19 hits Europe (Photo Services)
England’s deputy chief medical officer Professor Jonathan Van-Tam stated that the Government was preparing for the most important vaccination programme 'in decades'.
Prime Minister Boris Johnson said everyone who is eligible should 'definitely' get a vaccine as he dismissed the arguments of the so-called anti-vaxxers as 'total nonsense'.
During a visit to a supermarket distribution centre in south-east London, he said that once a vaccine was cleared for use, it was essential to ensure there was as wide a take-up as possible.
'I have got no inhibitions about getting a vaccine,' Mr Johnson told reporters.
© Provided by Evening Standard'Certainly I would say to everybody anti-vaxx is total nonsense - you should definitely get a vaccine.'
In a separate development on Wednesday, Mr Johnson's communications director Lee Cain dramatically resigned amid signs of a bitter Downing Street power struggle.
The former journalist said in a statement, less than 24 hours after it was reported he was to be promoted to chief of staff, that he had decided to leave No 10 at the end of the year.
Labour leader Sir Keir Starmer said the UK's death toll was another 'grim milestone' in the pandemic, accusing the Government of again being too slow to act as it entered the latest phase.
© PA Wire/PA Images Labour Party leader Keir Starmer during a visit to Whitmore Park Primary School in Coventry. (Photo by Jacob King/PA Images via Getty Images)'We owe it to all of the families who are grieving to get on top of the virus and head towards a vaccine and that's what the Government must absolutely focus on now,' he said.
Deaths of coronavirus patients in Scotland also reached a six-month high after 64 were recorded in the past in 24 hours, First Minister Nicola Sturgeon said, the highest figure since May 6.
Separate figures published by the UK's statistics agencies for deaths when Covid-19 has been mentioned on the death certificate, together with additional data on deaths that have occurred in recent days, show there have now been more than 65,000 deaths involving coronavirus in the UK.
Ministers have said they do not expect the mass roll-out of a vaccine to begin until next year.
People walk along a shopping street in Ashton-under-Lyne east of Manchester in north-west England on November 11, 2020, as people in England live through a second nationwide lockdown to combat the spread of the novel coronavirus covid-19. - A united effort to tackle spiking coronavirus infection rates has been called for as 56 million people in England went into a second lockdown but with the public weary of restrictions and fearing for their livelihoods. (Photo by Oli SCARFF / AFP) (Photo by OLI SCARFF/AFP via Getty Images)Downing Street said that it would not be made available until the regulator, the Medicines and Healthcare products Regulatory Agency (MHRA), was satisfied that it was safe.
'Any vaccines which are determined for use will undergo a vigorous series of safety checks, they will be absolutely safe for the public to use,' the Prime Minister's official spokesman said.
Meanwhile students in England will be allocated staggered departure dates during a 'travel window' between December 3 and December 9 so they can return home after the four-week lockdown.
Students will be encouraged to take an asymptomatic test at 'targeted' universities in England, while teaching will move online by December 9 so students have enough time to self-isolate if needed.
In Wales, universities will end most in-person lessons in the week ending December 8 and students will be offered the use of a voluntary coronavirus test 24 hours before they travel home in early December.
Students in Scotland who want to go home for the festive break are being advised to 'reduce their social mixing for two weeks' beforehand and only go out for 'essential reasons and exercise' while they are also encouraged to take two lateral flow tests five days apart before returning to their families.
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Stay alert to stop coronavirus spreading - here is the latest government guidance. If you think you have the virus, don't go to the GP or hospital, stay indoors and get advice online. Only call NHS 111 if you cannot cope with your symptoms at home; your condition gets worse; or your symptoms do not get better after seven days. In parts of Wales where 111 isn't available, call NHS Direct on 0845 46 47. In Scotland anyone with symptoms is advised to self-isolate for seven days. In Northern Ireland, call your GP.
Aerobatic maneuvers are flight paths putting aircraft in unusual attitudes, in air shows, dogfights or competition aerobatics. Aerobatics can be performed by a single aircraft or in formation with several others. Nearly all aircraft are capable of performing aerobatics maneuvers of some kind, although it may not be legal or safe to do so in certain aircraft.
Aerobatics consist of five basic maneuvers:
- Lines (both horizontal and vertical),
- loops,
- rolls,
- spins, and
- hammerheads.
Most aerobatic figures are composites of these basic maneuvers with rolls superimposed.
A loop is when the pilot pulls the plane up into the vertical, continues around until he is heading back in the same direction, like making a 360 degree turn, except it is in the vertical plane instead of the horizontal. The pilot will be inverted (upside down) at the top of the loop. A loop can also be performed by rolling inverted and making the same maneuver but diving towards the ground. It can be visualized as making a loop of ribbon, hence the name it is given (there is an animation depicting a loop on the bottom of this page).
A roll is simply rotating the plane about its roll axis, using the ailerons. It can be done in increments of 360 degrees (i.e. four short 90 degree rolls will bring the aircraft back to its upright position).
A spin is more complex, involving intentionally stalling a single wing, causing the plane to descend spiraling around its yaw axis in a corkscrew motion.
A Hammerhead (also known as a stall turn) is performed by pulling the aircraft up until it is pointing straight up (much like the beginning of a loop), but the pilot continues to fly straight up until their airspeed has dropped to a certain critical point. The pilot then use the rudder to rotate the aircraft around its yaw axis until it has turned 180deg and is pointing straight down, facing the direction from which the aircraft came. The aircraft gains speed, and the pilot continues and returns to level flight, travelling in the opposite direction from which the maneuver began. It is also known as a 'tailslide', from the yawing turn, which is different from the typical method of turning an aircraft in the pitch axis.
Table of the basic aerobatic figures[edit]
Most of these can be entered either erect or inverted, flown backwards or have extra rolls added.
Where appropriate, the Aresti Catalog symbols have been included. Not all the figures are competition figures, and so some do not have diagrams to accompany the description.
Reading the diagrams, a figure begins at the small solid circle and ends at the short vertical line. Inverted flight (negative g) is depicted by dashed red lines. The small arrow indicates a rolling maneuver.
| Figure Name | Description | Aresti Symbol |
|---|---|---|
| Chandelle | ||
| Chandelle | Consists of a maximum climb, maximum bank combination to obtain the greatest altitude gain for a given airspeed and at the same time making a 180° course reversal. (Low, positive g maneuver can be performed in all aircraft.) | (Not a competition figure.) |
| Cuban Eight | ||
| Cuban Eight | 5/8s of a loop to the 45 degree line, 1/2 roll,3/4s of a loop to the 45 degree line, 1/2 roll, 1/8s of a loop to level flight (half of the Cuban Eight is called a 'half Cuban Eight', and the figure can be flown backwards, known as a 'Reverse Cuban Eight'). | |
| Half Cuban Eight | From level flight, 5/8s loop to the inverted 45° line, 1/2 roll to erect down 45° line, pull to level flight. | |
| Reverse Half Cuban Eight | From level flight pull to the 45° up line, 1/2 roll to inverted 45° up line, then 5/8s of a loop to level flight. | |
| Hammerhead; Stall Turn | ||
| Hammerhead; Stall Turn | 1/4 loop (pull or push) to vertical, as momentum/airspeed decreases, rudder is applied and the aircraft rotates around its yaw axis, the nose falls through the horizon and points towards the ground, a momentary pause is made to draw the vertical down line, and 1/4 loop to level flight. This figure is sometimes called a stall turn which is a misnomer because the aircraft never actually stalls. The manoeuvre is performed when the aeroplane decelerates through 20 - 30kts (more or less, depending on the aeroplane flown) of airspeed. The cartwheel portion of the hammerhead is performed with full rudder and full opposite aileron. Gyroscopic forces from the propeller during the rapid rate of yaw will produce a pitching and rolling moment and a degree of forward stick will be required to keep the aeroplane from coming off-line over the top. The yaw is stopped with opposite rudder while the ailerons and elevator remain in position, then once the yaw is stopped and the aeroplane is pointed down vertically, all controls are returned to neutral together. Although they can be flown left or right in any aeroplane with the proper technique, a hammerhead is best flown to the left with a clockwise rotating prop, and to the right with an anticlockwise rotating prop (as in a Yakovlev type), due to propeller torque/gyroscopic effects. | |
| Immelmann; Roll-off-the-top; Split S | ||
| Immelmann; Immelmann turn; Roll-off-the-top; half loop, half roll | 1/2 looping up followed by half a roll. There should be no pause between the end of the looping section and the start of the roll to erect flight. | |
| Split S | Essentially an Immelmann in reverse. Half roll (from erect to inverted) followed by positive pitch to give a half loop. Converts altitude to airspeed, and reverses direction. | |
| Up lines | ||
| Vertical up | Fly the aircraft so that the fuselage is perpendicular to the ground (along the wings' zero lift axis). The attitude of the aircraft is judged, not the flightpath, therefore the aircraft may drift downwind during a vertical maneuver. | |
| 45° up line | Fly the vertical attitude plus or minus 45°. As for vertical lines the attitude of the aircraft is judged, not the flightpath as viewed by a ground observer, which may differ depending on whether the figure is flown into or with the wind, and the wind strength. | |
| Loop | ||
| Inside loop | A vertical circle entered from straight and erect level flight. A positive pitching movement is used at all points in the loop to draw the circle, so that the aeroplane canopy is pointing inwards. Both the inside and outside loop are sometimes casually referred to as a 'loop the loop'. | |
| Outside loop | A vertical circle entered from straight and erect level flight, canopy pointing out of the loop. Loop can be above or below the straight and level entry altitude, from erect or inverted attitude. (Draws extreme negative G) | |
| English bunt | Half an outside loop starting from upright, straight and erect level flight. (The pilot pushes the stick forward and draws a half circle in the sky from the top down). | |
| Spin | ||
| Erect spin; Inverted spin; Flat spin | A family of auto-rotational maneuvers, consisting of normal or 'flat' spins, either upright or inverted. Two components must exist to spin an aircraft: 1) critical angle of attack (COA), which means that the aircraft is stalled, and 2) yaw. | |
| Tailslide | ||
| Bell Tailslide | 1/4 looping up, straight vertical (full power) until the aircraft loses momentum. The aircraft falls backwards, tail first, until the nose drops through the horizon to a vertical down position. 1/4 loop (push or pull) to recover to level flight. | |
| Snap Roll; Flick roll; Flick | ||
| Snap roll; Flick roll; Flick | A family of rapid autorotational or 'horizontal spins,' not unlike spins. Rotation is induced by a rapid pitch input followed by rapid yaw input, thus stalling one wing further than the other. This imbalance in lift causes the high speed roll. | |
- Dive; extreme nose down attitude (not necessarily vertical), resulting in an increase in both airspeed and descent rate.
- Lazy eight; 1/4 looping up, wingover (left or right), 1/2 looping down+up, wingover (right or left), 1/4 looping down
- Lomcovak; family of autorotational, tumbling figures. In all varieties, the aircraft appears to tumble out of control. For example, one style involves the aircraft tumbling (simultaneously) nose over tail and wingtip over wingtip in a negative-g, gyroscopic condition. Introduced by Czechoslovaks such as Ladislav Bezák, and others.
- Pugachev's Cobra; the nose of the aircraft is pulled up suddenly. The aircraft pitches up to 90–120° angle of attack. The nose then falls back to the horizontal, and the aircraft accelerates away in the original direction [1]
- Kulbit; post-stall maneuver similar to Pugachev's Cobra, but going to 360° pitch angle, flying a 'loop'
- Roll; Rotational motion around the longitudinal axis (the nose rotates around its center).
- Barrel roll; a combination of a loop and a roll. The flight path during a barrel roll has the shape of a horizontal corkscrew and follows a helical path.
- Aileron roll; 360° revolution about the longitudinal axis at maximum roll rate. It consists of a pitch-up followed by a roll which is uncontrolled in the pitch axis, resulting in an initial climb, and then descent to the original altitude.
- Slow roll; roll around the longitudinal axis slowly, maintaining level flight by cross-controlling the elevator and rudder inputs.
- Hesitation roll; slow roll, stopping momentarily at various points during the roll. Common variations include a two-point roll, three-point roll, four-point roll, etc...
- The Scissors; flying in a zigzagging pattern, either horizontal or rolling.
- Standing eight; inside loop, 1/2 roll (inverts the aircraft), inside loop (towards the ground) 1/2 roll on top of the loop
- Wingover; left or right 180° tight turn (yaw) at the top of a 1/4 looping (up)
- Zoom climb; dive followed by extreme nose up attitude (not necessarily vertical). Consists of an initial airspeed gain resulting in an increased rate of climb, followed by airspeed loss and decreased rate of climb, returning to the original speed and altitude.
- Falling leaf; throttle off, wings-level stall, allowing the plane to side-slip in one direction, then countering the slip with rudder before a spin develops, allowing it to side-slip to the other direction, countering with rudder again, diving to exit the maneuver.
- Torque roll; tailslide performed with aileron added in the direction of the engine torque. The aircraft climbs in the vertical until forward momentum is lost, and rolls due to the torque of the engine as it tailslides.[1]
Inside loop
half roll - positive loop - half roll
Falling leaf, with flares deployed
Climbing spin
English bunt
See also[edit]
Roulette Manu Rolling
| Wikimedia Commons has media related to Aerobatics maneuvers. |
References[edit]
- ^Aerobatics by Neil Williams -- Airlife Publishing 1975 Capter 23
External links[edit]
- US Air Force e-publishing docs related to Aircraft demonstrations (guidelines include descriptions and illustrations of figures used by USAF pilots on A-10, F-15, F-16, F-22 planes)