Bharat Rakshak

neerajb

I don't agree with rat deployment at 167 feet analysis. First, the aircraft is being filmed at an angle. If it is 45 degrees, then the scale length of 186 feet using aircraft length is inaccurate. Adjusting it (45 degree) should reduce estimated height to 2/3 so it should be around 100 feet altitude...

neerajb

CVR captures both pilots and cockpit audio on different channels, so investigators know who said what. Regarding deliberate action sounds eeriely similar to Alaska airlines flight 2059.

neerajb

Looks photoshopped to me. No flaps/slats are down, not anchored so most likely taxiing. Why would you need reheat for taxiing?

neerajb

^^ Dual thrust IMO is reference to the cold launch.

neerajb

Aditya-L1's SUIT captures full-disk images of the Sun in near ultraviolet wavelengths

https://www.isro.gov.in/Aditya_L1_SUIT.html

neerajb

Adityaji If you look at the stolen Q400 youtube videos, that turbo prop airliner was doing loops. Bandar with afterburning turbofan should be able to do it easily.

Why it doesn't do it only PAF can tell.

neerajb

If one can maintain sufficient initial speed and Gs, it should be able to complete the loop. Bandar is 8 G rated, so pulling out of the dive should not be a problem. What structural/FBW issues?

neerajb

That clip has a C-5 retraction in between two C-17 shots. But it is amazing to see how no lines are visible after all those several doors shut! But the landing gear innovation award should go to Mig-23. It always amazes me how that chunky landing gear goes inside that tiny landing gear bay with that...

neerajb

Elon said the following on usage of stainless steel by Spacex in starship instead of Aluminium/carbon fiber: Carbon Fiber Composite: 1. Costs 130$/kg 2. For Starship needed a huge autoclave (9 meters dia, 70 meters length) 3. Composites are porous to hot gases, needs an inner liner which adds to cos...

neerajb

...Reliance Naval and Engineering Limited, in Gujarat has yard capacity for such ships, but it went bankrupt waiting for orders. The dry dock is capable of building ships with 400000 tons..... The dry dock infrastructure of Reliance Naval should still exist. It started as Pipavav shipyard and had a...

neerajb

Just read this thread and replying very very late. ArjunPanditji if latency aka real-time is not an issue then Python is really versatile, easy to use and has large number of libraries for virtually everything and that's why it is popular even among non-programming folks (which was the idea to star...

neerajb

I saw rocketry recently and have a query related to a scene depicting Vikas engine's initial test. The engine is mounted on a test stand and is covered in white stuff presumably ice. When it ignites, it melts away revealing the metal beneath. I have seen some cryogenic engines firing and they are fr...

neerajb

I was listening to Finnish (?) pilot's experiences with Mig-21(fighter pilot podcast). If the afterburner is not disengaged on a Mig-21 after takeoff, it goes dry in 7 minutes! Host asked him the max allowed time on afterburner. He said not needed as it goes out of fuel before the engine overheats. ...

neerajb

in a Twin Turbo era CRDVE come up with Single Turbo that too in a "V" engine, sigh! just call Tata they have 600 HP twin turbo in line 4 DOHC engines in their stable. What’s wrong with a single turbo again? If two is better, why not 3 or 4 turbos? They would be 3 to 4 times better..no? Wa...

neerajb

Yes exit hole. Check the metal triangle in the first pic for reference.

neerajb

Watched The Kashmir Files with parents today. Chose 9 am show to avoid crowds. Theater was 70% full. Pindrop silence during intermission and at the end. Parents felt disgusted with peacefuls and the end shook them emotionally. I feel thankful to Vivek Agnihotri for choosing this subject and showing ...

neerajb

Usually the main landing gear is located at the CG of commercial aircrafts and it is done for easy handling during take off. When loaded, the CG moves around this point but within a limit. To cater to this, pitch trim is used so that the aircraft handles the same way. When the trim is changed, it mo...

neerajb

Could be weight and balance issue or related. Elevator trim at takeoff is based on CG calculations. If the calculation is off or trim is set incorrectly, it can cause early rotation or difficult rotation (if set too nose heavy). A Northwest A320 faced similar issue of early rotation due to incorrect...

neerajb

Question for Gurus: It appears to me that, at the current pace, all eligible adults in India will get their first doses by mid-November. 99% of these first doses will be either Covishield or Covaxin, as no other vaccine will be available in bulk by then. This means that, subsequently, all second do...

neerajb

I believe you are referring to this Transaction Processing Facility . Amex, Visa, Sabre, Amadeus, 911 and lots of airlines and aggregators use it or used it in the past. It was the goto solution for extremely high volume and latency sensitive requirements like real-time reservation and financial sys...

neerajb

I have a Brother inkjet (J885DW) and it runs out of ink every few months. I was able to get aftermarket cartridges from Amazon for $20 (larger quantity). It stopped printing! Luckily I found out that the head was dirty, so I cleaned that and it worked (for now). What laser printer did you buy? I ma...

neerajb

Just read this thread and replying very very late. ArjunPanditji if latency aka real-time is not an issue then Python is really versatile, easy to use and has large number of libraries for virtually everything and that's why it is popular even among non-programming folks (which was the idea to start...

neerajb

My father went in at 11 am and came out by 2 pm including 30 min observation time. My mother arrived at 9 am and she was out before 12 with 30 mins observation period.

neerajb

Got my parents vaccinated two days back in Delhi. Registration is mandatory via cowin or arogya setu app. During fore noon session, hospitals allow only those who have registered. After 3 pm, walk-ins are allowed. Hospital staff get those registered using onsite computers. You still need to be 60+ o...

neerajb

On page one, the unfolded and folded wingspan got swapped, Please correct it.

neerajb

Why RATO not popular with ski jump carriers for increasing payload? Not all missions will need to carry max payload and when needed RATO can be used.

neerajb

neerajb

https://youtu.be/bM9ZrliDkNA Looks like plane was high during approach and touched down 4500 feet down the runway instead of usual 1500. Whether landing gear malfunctioned or pilot forgot to deploy it is unclear. Multiple chimes heard during approach for first landing indicating some problem. After ...

neerajb

Rakesh wrote: F-22 air intake. The fit and finish of the F-22 (and yes the picture below is likely a production version) is far ahead of the Su-57.

That apparent fit finish is a thick layer of makeup only. This is how a raptor looks like in squadron service.

https://youtu.be/8FQt0mR2ykQ

Cheers....

neerajb

Difficult to say how much without specific configuration. For fighter it may and for civilian jets i may not. Also depends on Tail vs canard vs tailless config. But in general for fighters, FBW allows you to have relaxed static stability which allows you to trim, for same condition, at lower AoA an...

neerajb

Yes. I saw it in a bollywood song and was scratching my head for weeks. The hump, fuselage and wings were distinctly 747 but those podded twin engines didn't make any sense. Finally I searched for odd 747 variant and got the following.

https://en.m.wikipedia.org/wiki/Boeing_747_G-BDXJ

neerajb

Identify the aircraft.

neerajb

Sirs, I have no data but there was a sudden death in our locality. All symptoms and past history medical/travel is suggestive of what was the reason. Local doctor and the one who declared the demise is saying the same thing. Government contacted, not a word on it and certainly the number didn't bump...

neerajb

I am no expert but a recent event nearby makes me think that: 1. The numbers being reported do not reflect reality. Not fudging the numbers but general callousness of government apparatus towards public in general is causing the low confirmed numbers. 2. Few prospective cases are being tested likely...

neerajb

The traditional autoland in commercial airlines is ILS only and this capability is there since long, nothing new there. So I believe Dileep is referring to AI computer vision guiding the plane with ILS aiding it or the other way round. Again like a human pilot monitoring the ILS landing, ready to ta...

neerajb

Artificial intelligence is like trying to guess/predict vs exact measurement (with sensors and a program). Traditionally, humans code software for all possible scenarios that one could encounter for a specified task like, say, auto landing/takeoff which is complex, testing intensive and error prone....

neerajb

IMHO delhites are better off financially than rest of India comparatively. I have seen many in my circle appreciative of freebies even when they dont need it. Many are crorepati types. Greed and selfishness has no ends it seems.

neerajb

Just guessing here. Maybe the pilots are using higher flex temp than needed or using TOGA during hot and high to have more buffer and this is what the report is alluding to. But in any case, it should not lead to failures if they are observing the operational limits.

neerajb

What amazes me is why MCAS was designed to operate out of one aoa sensor. Max already has two sensors, all they needed was to use data from both. Secondly mcas had no min max values for stab movement. That is another blunder. Every time it triggered, it used aoa value to calculate stab movement irre...

neerajb

IMO MCAS is all about money and not safely or stall avoidance. Mcas doesn't work with flaps extended so any use cases involving landing and takeoff are ruled out. Mcas was created to allow max to grandfather the certification from 737 NG. Boeing told regulators that max is an iteration over the earl...

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