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What are the different types and styles of hearing aids MD.OMAR FARUK 142 Views • 2 years ago

Your hearing professional can recommend one or more types based on factors such as your level of hearing loss, aesthetic preferences, lifestyle needs and budget. Most BTE and RIC styles come in a range of colors and metallic finishes to complement your hair or skin tone. *Individual results may vary. Invisibility may vary based on your ear’s anatomy. See more: https://[a]www.advancedhearingbd.com%2Fwhat-are-the-different-types-and-styles-of-hearing-aids%2F[/a]

Advanced Hearing Center
A House of Audiological Solution, Hearing Aid Sales & Servicing Center

We are leading hearing aid dealer in Bangladesh. We dispense standard quality digital hearing aids of all models like small tiny invisible hearing aids, body worn hearing aids, behind the ear hearing aids (BTE), Receiver in the canal (RIC), Complete in the canal (CIC), tinnitus masker hearing aids.

We deal latest quality digital hearing aids of all brands like Phonak, Starkey, Seimens (Signia), Oticon, Bernafon, Beltone, Arphi, Audioservice, Unisound. Our hearing aid price ranges starts from low price hearing aid to high price hearing aids. All price ranges of hearing aids of all reported hearing aid brands are available here readily.

We do regular follow up our hearing aid user & give best fine tuning solutions. Our aim is to provide quality hearing aids to our patients. As per manufacturer warranty policy we also provide free service, warranty to the hearing aid users. As our social responsibility we do attend several awareness camp related to hearing impaired persons, organized in certain interval in our nearby areas.

Our Services:
1. Complete Hearing Testing & Evaluation
2. Digital Programmable Hearing Aid Trial and Dispensing
3. Customized Hearing Protections
4. Ear Mold (Hard & soft) at our own lab
5. Speech Language Therapy
6. Hearing Aid repairing & servicing at our own lab
7. Hearing Aid Batteries & Accessories
8. Home delivery or support for Senior Citizens.

** Our All Hearing Aid One orTwo Years Warranty or Repayment Guarantee
** Our Digital Hearing Aid Starting Price - 5,000 BDT up to 5,60,000 BDT

Dhaka Office:
24/1, Shan Tower (3rd Floor) (Brac Bank & Al-Arafah Islami Bank Building), Shantinagar, Dhaka - 1217, Bangladesh
Location Map: https://[a]www.advancedhearingbd.com%2Fmap%2Fdhaka%2F[/a]

Narsingdi Office:
Narsingdi Plaza Shopping Mall (1st Floor), Shop No: 234
(Near by Narsingdi Govt. Girls High School)
12 Satirpara, Narsingdi-1600
Location Map: https://[a]www.advancedhearingbd.com%2Fmap%2Fnarsingdi%2F[/a]

Mobile (Imo+WhatsApp Available): +8801755574799 +8801814091509

Web: www.advancedhearingbd.com
Mail: info@advancedhearingbd.com
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Catching A Rocket With The World's Biggest Helicopter - Hillers Air Tug Jimmy47 185 Views • 4 years ago

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3d Model here: https://www.cgtrader.com/3d-mo....dels/aircraft/helico

A giant helicopter, with a rotor diameter bigger than the length of a football field. It would be capable not only of transporting a Saturn five S-1C first stage to the launch site - but of actually catching it in midair as it fell on a parachute - ready to be reused.

This is one of the biggest mind boggoling space concepts that was never built - developing a reusable rocket technology - but in the 60s.

Today on our new space channel, we will be covering one of my favorite, yet unkown, insane plans, an aircraft built to play catch with a moon rocket - the Hillers Air Tug.

It was monstrous huge, with a rotor diameter over 400 feet, or 120 meters for our European friends.

These rotors would have jet engines on the tips, that would allow the rotors to make one rotation per second - which is very fast for something so dam wide - but i'll get to the physics problem in just a second.

Its vast engine would be situatied vertically in its rotor stem, and it would have two curving sides to help stablise the rocket in flight.

This size would have a huge eight of 450,000 pounds (200,000 kilograms) and with his huge rotors, be able to carry 550,000 pounds (250,000 kilograms) - a total, for those playing along at home, with a gross weight of 1 million pounds - impressive ideed.

According to Hiller, it was technically not a helicopter but rather a Rotary Wing System for Booster Recovery - but if it looks like a helicopter and goes woom woom woom like a helicopter - then it is, with the added nick name the Air Tug.

The helicopter design of course, made it also avaliable for other operations

well outside simple booster recovery, such as operating as a sky crane, or a aerial transport for cargo both in the military and civil markets.

Perhaps this helicopter would have gotten revenge for the hillers contract loss to the Hughes OH-6A Cay-use helicopter to the army, a light scout helicoper used throughout the vietnam war.

So... how exactly did this helicopter, or flying tug boat, - catch - a rocket in midflight... well hold on, because this ride is about to get real bumpy - yee ha!

When the rocket was fired, the helicopter would take to the skies from a nearby airbase. It would fly to the zone that the booster, the S-1C, would land, and lotier in the area for up to six hours with its large fuel tanks - hovering at around 15,000 to 20,000 feet (4,500–6,000 meters).

When the booster seperated and began its decent,

it would deploy a sort of double tandum parachut, the upper section would have a hook.

The air tug would approach the decending rocket, and meet it at around 10,000 feet (3,000 meters). At this point the rocket would be descending along a glide path with more forawrd than doward velocity, making it perfect for a intercept by the helicopter.

The Air Tug would fly the same glide path, matching the speed and trejectory, it would dploy a grabbling hook, and with help from a viewing plafrom on the side, it would snag the upper parachut, or pickup chute.

Then the helicopter would slowly slow its decent, taking on more and more of the boosters weight, and centering the rocket directly underneath it, assuming the same center of gravity. once it was sufficently slow enough and the heclipter was carrying the full load, the boosters parachouts would deflate and the fuslage suspended 700 feet below the helicopter.

If the first pass was unsuccessful, sufficient time would remain for two more attempts before the booster was too near the ocean's surface for another try.

But its not over there - the helicopter would then reel in the booster using its powerful winch - which again, was onboard somewhere, and rotate the booster horizontal under the helicopters u shaped fuslage - fitting snuggly and more aerodynamically sound. The air tug would then return to base for the booster to be prepped for another launch, or other operations.

Expensive as such a helicopter would have been at the time to develop, the huge aircraft would have paid for itself with the first several recoveries.

So simple in theory, but there was one major flaw with the concept.