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Hidden Cameras are installed in most public places such as department stores, shopping malls, multiplexes, railway stations, airports, casinos, banks, etc. As their name suggests, these cameras are kept in places concealed to the public and they surreptitiously record people’s movements. They are connected to monitors or TV screens. Any incriminating move immediately shows up on the screens, which are manned by security personnel.

Security Cameras are very small and compact in size. Some modern cameras are so small that they measure just a couple of inches across and only a few millimeters in thickness. Bigger versions are available, but they are not popular as it is difficult to conceal them. Miniature and sub-miniature versions of Security Cameras are mostly used.

Large establishments use several hidden Security Cameras in various strategic points and then connect all of them together by cables. These are then networked onto a single CCTV monitor. CCTV screens are closely monitored by security guards. The advantage of having a CCTV Hidden Security Camera is that multiple views can be obtained simultaneously on the same screen.

Several methods are adopted to camouflage Security Cameras. They may be affixed inside ceiling fans, table lamps, in frames of paintings, or some other such camouflaged place. Some appliances use extreme deceptive tactics to hide their cameras. There are toys, lamps, clocks and other appliances which actually may be highly disguised Security Cameras.

They can be either wired or wireless. Despite their small size, they have a built-in recorder that records and simultaneously broadcasts images over the screen. Usually these cameras are installed at specific vantage points on or near the ceilings. Plaster is used to attach the plastic body of the camera to the wall. Tiny camera mounts are also available, but bring the camera more into view.

Some countries, like Great Britain, are trying to bring the whole of their public life into the view of Hidden Cameras. There are about 25 million hidden Security Cameras being used worldwide and millions of dollars are being spent for their purchase and research.

Hidden Cameras provides detailed information about hidden cameras, hidden security cameras, hidden video cameras, wireless hidden cameras and more. Hidden Cameras is the sister site of Security Cameras Web.

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I propose a modification on the CH 47 Chinook Helicopter to increase take off weight, lift off, stability near the ground on take off and ground effect or ground cushion on landings. The modification will be retractable slots on the protruding extended exterior base of the helicopter which will be attached parallel to the length of the rounded edge of the base. This modification will be a “C” shape cupping the curved surface as if it were the leading edge of a wing. The slots will be exactly as those on a STOL aircraft on the leading edge of the wing. On the topside of the slot there will be a lip, which flares outward, which will double as a step or area for a guide rope, hook or tie down.

Such a flare will ensure maximum amount of airflow in the vicinity makes the continued laminar flow to the flat belly of the aircraft. Airflow from both sides of the round edges will collide increasing the air pressure underneath the flat belly of the aircraft and lift it up. Think of a hydro-craft scenario, we will be using additional principles of ground effect to enhance the landing and taking off characteristics of the Chinook. During nose down forward flight this will also assist the aircraft by allowing for maximum airflow to reduce drag, as slots do on any aircraft, at higher speeds retraction is a possible option if this feature makes sense. Wind tunnel tests should be performed at different angles of attack for forward flight as well as downward airflows to simulate the force of the rotor wash. Rotor wash is energy, I propose to use all the energy we can to it’s absolute maximum since the cost to produce it are paid in fuel and additional weight.

These slots will help the air make the corner as the rotor blades blow massive amounts of air downward, forcing it under the aircraft for ground effect. This will allow hovering under less than normal power and allow the aircraft to have softer landings. Imagine standing upright with a piece of plywood and letting it fall to the ground with you on top of it, no hard landings will occur. For lifting wind sensitive cargo the slots can be retracted if such a feature is needed. I propose these add-on slots not be made of composite due to the chance of fire causing them to emit cyanide gas, unless the undercarriage is already made out of such material, as is the case on some of the models. If so then to prevent problems with fumes in case of fire or if used in aerial fire fighting or in the war zone, then I propose they be coated with ceramic material and interlaced with other non-flammable materials.

Lance Winslow - Online Think Tank forum board. If you have innovative thoughts and unique perspectives, come think with Lance; www.WorldThinkTank.net/wttbbs/

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