Search found 85 matches

by Shubham
03 Apr 2018 22:34
Forum: Military Issues & History Forum
Topic: Military Flight Safety
Replies: 2025
Views: 221532

Re: Military Flight Safety

The speed do appears to be too fast,(especially if it had lot of cargo) resulting in high rate of descent just before touchdown.

If rate of descent is too high on touchdown, the tail section will shear off from the joint from where it is connected to cargo compartment.
by Shubham
03 Apr 2018 15:54
Forum: Military Issues & History Forum
Topic: Military Flight Safety
Replies: 2025
Views: 221532

Re: Military Flight Safety

Crash of Mi 17 v5 at Kedarnath. All occupants reported to be safe. One person was killed and three others injured when an Indian Air Force (IAF) cargo helicopter caught fire while landing in Uttarakhand's Kedarnath today, reported ANI. The MI-17 helicopter reportedly caught fire after it hit an iron...
by Shubham
19 Feb 2018 23:45
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

How a failed Artouste 3 B engine, took away two lives. http://www.bharat-rakshak.com/IAF/Database/22947 On 11 April 2007, Squadron Leader Basu was detailed for an air logistic sortie to Amar helipad located on the Siachen Glacier, as the leader in two aircraft formation. Flying over this vast frozen...
by Shubham
17 Feb 2018 22:18
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

Believe what you want !! but more then enough cheetah pilots have sacrificed their lives to failed engines. I am willing to believe this but your word is not enough. I have been following flight accidents for decades and while all sorts of reports exist - please point me to engine failure as one of...
by Shubham
17 Feb 2018 15:05
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

Reality - a twin engine helicopter which is loaded to single engine OGE weight will NOT CRASH AT ALL ( removing cases when helicopter has high rate of descent and low terrain clearance ; while coming for landing. This case can be avoided if pilot is careful) when one of its engine fails. The detrim...
by Shubham
17 Feb 2018 13:26
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

That is incorrect sir. OEI flight ceiling will always be lower than service flight ceiling. I have forgotten the number for Dhruv, but typically it is about 75% or so for twin engine helis. If you are flying over territory which is higher than your OEI ceiling, you will crash. There are no two ways...
by Shubham
17 Feb 2018 12:38
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

But a twin engine helicopter in the Himalayas - at the edge is its performance envelop will crash just as disastrously as a single engine because the air is so thin that even maximum power on two engines is barely enough and there is no forward movement and wing lift available. And they don't have ...
by Shubham
16 Feb 2018 22:59
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

Read online that CO of 114 HU stating that they have lost 14 pilots in operations. Even if considering a few to be human error, the rest is a very high figure of casualty as compared to Russian fleet. I will make an unsubstanted statement that had Su 30 been a single engine fighter, it would have r...
by Shubham
16 Feb 2018 09:59
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

Shubham, Although, there is security in redundancy, modern aircraft engines are incredibly robust. Do the Chetaks & Cheetahs have a worse safety record than let's say the Dhruvs and Mi-17s? How about the Mirages over Mig-29s or Jaguars? Read online that CO of 114 HU stating that they have lost ...
by Shubham
16 Feb 2018 09:51
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

Some of the posters are having the views that ALH is inefficient wrt Cheetah class helicopters, but the usage of a single engine helicopter is nothing short of senseless and gross disregard of various risks which need not be taken in 99.99 per cases. Flying a single engine at high altitudes is just...
by Shubham
15 Feb 2018 20:39
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

Some of the posters are having the views that ALH is inefficient wrt Cheetah class helicopters, but the usage of a single engine helicopter is nothing short of senseless and gross disregard of various risks which need not be taken in 99.99 per cases. Flying a single engine at high altitudes is just ...
by Shubham
14 Feb 2018 12:57
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

I had few doubts 1.Can ALH fly with single engine ??? 2.Is it O.k to take a 500kg penalty ??? 1. I assume that you mean that in case one engine fails or the pilot is Forced to switch off one engine, can heli fly ? . It depends on the performance class of the helicopter and loading. I believe that A...
by Shubham
14 Feb 2018 11:48
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

To me this sounds like a death wish for a part of our army that are supplied by helicopters No sir. They will be supplied through ALHs. At the moment, the rate at which “talks” are “progressing”, I can’t see how KA-226 is going to beat the LUH in terms of time to production. On top of that the elec...
by Shubham
06 Feb 2018 09:18
Forum: Technology & Economic Forum
Topic: Aerospace Engineering - Aerodynamics, Structures, Avionics, Flight Dynamics - Technical Discussions
Replies: 67
Views: 7828

Re: Aerospace Engineering - Aerodynamics, Structures, Avionics, Flight Dynamics - Technical Discussions

I have a question about practical interpretation of Angle of Attack (AoA) of an aircraft. If I refer to any aerodynamics book, AoA is defined as the angle between the chord line of the airfoil (Wing) section and the relative wind flow direction as shown below. http://code7700.com/images/airfoil_ter...
by Shubham
31 Jan 2018 19:32
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

I have seen different coloured jumpsuits in IAF - orange, green, dark blue, etc. Can anyone tell me what each colour represents? Orange provides good contrast so it preferred in snow bound areas and sort of necessary in case of sea flying. Green is the standard flame retardant one, used by all airc...
by Shubham
27 Jan 2018 12:28
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

The link of citation posted above is http://pib.nic.in/newsite/PrintRelease.aspx?relid=175900 One citation for Anti Naxal operation. http://pib.nic.in/PressReleaseIframePage.aspx?PRID=1517887 In Jun 2017, the Chhattisgarh Police and CRPF had launched "Operation Prahar", a major joint opera...
by Shubham
27 Jan 2018 09:03
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

A snippet of information about our high altitude helicopter operations can be found in this citation of gallantry award announced this Republic Day. President Confers Vayu Sena Medal (Gallantry) to Wing Commander Anshul Saxena Flying (Pilot) On Saturday, 11 Mar 17 at 0630 h the Unit of Wing Commande...
by Shubham
29 Oct 2017 17:09
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

Regarding recent Mi17 accident in arunachal, a video has surfaced on net https://www.ndtv.com/india-news/video-said-to-show-moments-of-arunachal-air-force-helicopter-crash-that-killed-7-military-personnel-1768464?amp=1&akamai-rum=off The remarks of CAS were indeed correct, the tail rotor separat...
by Shubham
11 Oct 2017 22:43
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

as when chopper transitions from hover to forward motion the blade on 3'o clock will produce even more lift as it is cutting against the incoming wind whereas the blade at 9'o clock is actually moving backwards (again applies to clockwise main rotor). Actually it is opposite, for clockwise rotor in...
by Shubham
11 Oct 2017 13:26
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

Agreed. I will also ask a heli pilot friend of mine for his thoughts as well. He flew helis where the rotors spun the other way. But, I am pretty sure he will agree with us. Also, no "ji" for me please. Me too nanha mujaheed only. While I may not be the friend you wanted to ask :) , this ...
by Shubham
11 Oct 2017 09:03
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

1. The cliff restricts the movement of the air from the left and hence the airflow at 9'o clock is both faster and at higher effective AoA. It should be lower AoA Thank you Indranil ji for indulging me, but no saar for this nanha mujahid. Generally I can't disagree with you for any point. Recircula...
by Shubham
10 Oct 2017 13:07
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

My guess, you crash into the wall, because of the suction effect that will be created by the air flowing faster between the helicopter and the wall compared to the other side due to Bernouli effect. My guess is that the rotor has to be tilted right to counter that. Is the answer of this question no...
by Shubham
10 Oct 2017 10:49
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

The other one Q. How is motion of helicopter effected? Is it differential pitch, tilt of rotor disc? What happens to the fuselage? Ans. The final reason why helicopter moves in 2D plane is due to rotor disc tilting in that direction ( for forward motion , rotor disc is lowest at 12 o clock point) a...
by Shubham
10 Oct 2017 09:19
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

The other one Q. How is motion of helicopter effected? Is it differential pitch, tilt of rotor disc? What happens to the fuselage? Ans. The final reason why helicopter moves in 2D plane is due to rotor disc tilting in that direction ( for forward motion , rotor disc is lowest at 12 o clock point) an...
by Shubham
10 Oct 2017 08:56
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

Let me take a bite at this. DeeJee ji question Q. what happens when you hover a helicopter with big wall on your left ? Ans. Assuming helicopter is a clockwise rotating main rotors like Russian/french (Chetak), the helicopter will just move forward. No sidewards motion towards or away from the wall....
by Shubham
17 Dec 2016 21:13
Forum: Military Issues & History Forum
Topic: Indian Air Force News & Discussion - 15 Dec 2016
Replies: 1839
Views: 308228

Re: Indian Air Force News & Discussion - 15 Dec 2016

Breaking news:-
Lieutenent General Bipin Rawat to be the new Chief of Army Staff, Air Marshal BS Dhanoa to be the next Indian Air Force Chief.
by Shubham
17 Dec 2016 21:11
Forum: Military Issues & History Forum
Topic: Indian Army News & Discussions - 11 June 2014
Replies: 3406
Views: 361553

Re: Indian Army News & Discussions - 11 June 2014

Breaking news:-
Lieutenent General Bipin Rawat to be the new Chief of Army Staff, Air Marshal BS Dhanoa to be the next Indian Air Force Chief.
by Shubham
27 Nov 2015 16:00
Forum: Military Issues & History Forum
Topic: Indian Military Helicopters
Replies: 3451
Views: 416211

Re: Indian Military Helicopters

^^ A legacy of twin engine helicopter fleet of Russian Origin. The guy is a Flight Engineer and has a small seat in the cramped space connecting Captain cockpit to the passenger cabin.
by Shubham
29 May 2015 12:31
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 165353

Re: Indian Space Programme Discussion

http://www.thehindu.com/news/cities/bangalore/gps-topup-gagan-is-up-and-ready/article7257994.ece GPS top-up GAGAN is up and ready On May 19, GAGAN, the Rs. 774-crore Indian ‘augmentation’ to GPS, beamed its first signals and became fully ready for use. India becomes the first country to offer satel...
by Shubham
28 May 2015 11:04
Forum: Strategic Issues & International Relations Forum
Topic: Internal Security Watch
Replies: 3774
Views: 261482

Re: Internal Security Watch

No discussion on how terrorists are targeting telecom operators in J&K? Out of charge: In North Kashmir, terrorists wage a mysterious war against telecom operators Sopore: On Tuesday evening, unknown gunmen barged into the house of Ghulam Hassan Dar, in Duru village of Sopore, and killed him. D...
by Shubham
21 Sep 2014 08:57
Forum: Military Issues & History Forum
Topic: Military Flight Safety
Replies: 2025
Views: 221532

Re: Military Flight Safety

Naval Chetak Helicopter crashes near Mumbai (18 Sep) . No fatal injuries to crew .

http://eprahaar.in/chetak-helicopter-cr ... n-alibaug/
by Shubham
09 Aug 2014 21:41
Forum: Strategic Issues & International Relations Forum
Topic: Islamism & Islamophobia Abroad - News & Analysis (9-8-2014)
Replies: 3423
Views: 216823

Re: Islamism & Islamophobia Abroad - News & Analysis (9-8-20

In Muslim Majority countries there is always an eternal problem of Social/Cultural/Security and so on. Only Malaysia appears like an exception.

Is Malaysia really free from the usual problems of Muslim Majority countries or are there problems simmering inside ?
by Shubham
04 Aug 2014 13:22
Forum: Strategic Issues & International Relations Forum
Topic: Internal Security Watch
Replies: 9599
Views: 388662

Re: Internal Security Watch

Received this floating around in the Social Media. I would just say it will increase some awareness :evil: प्रत्येक हिंदू को पढावें। अगर आपके पास थोडा भी समय हो तो पाकिस्तान से आये हुये इस पत्र जो की भारत की 3.5 लाख वहाबी मस्जिदों मे हर जुम्मे को पढ़ा जाता है ...अवश्य पढ़ें ...और आप ना भी पढ़े त...
by Shubham
22 Jun 2014 09:28
Forum: Trash Can Archive
Topic: LCH and other Helicopters Discussion Thread
Replies: 3908
Views: 637068

Re: LCH and other Helicopters Discussion Thread

^^^ Denel Aviation developed CIRSTEL(Combined InfraRed Suppression and Tail rotor Elimination) from Alouette III for SAAF. https://sites.google.com/site/stingrayslistofrotorcraft/denel-cirstel https://sites.google.com/site/stingrayslistofrotorcraft/denel-cirstel For Auto-Pilot on Chetak http://www.a...
by Shubham
21 Jun 2014 22:44
Forum: Trash Can Archive
Topic: LCH and other Helicopters Discussion Thread
Replies: 3908
Views: 637068

Re: LCH and other Helicopters Discussion Thread

After uncovering modernization programs for HAL helicopters, the question again comes back to Why in the world we want to import LUH and other helicopters? It was nice to getting to know about Chetan. But the fact is these modifications/ideas have come too late to be used and IAF/IA/IN have taken a...
by Shubham
08 Jun 2014 22:26
Forum: Trash Can Archive
Topic: LCH and other Helicopters Discussion Thread
Replies: 3908
Views: 637068

Re: LCH and other Helicopters Discussion Thread

^^^ nice idea , but several issues - just look at the dimensions of the blades, i think at some of the helipads, this size could restrict operations. Sometime back on this forum there was a comparison btw chinook & Mi-26 capabilities at high altitude and one point was the rotor dimensions which ...
by Shubham
07 Jun 2014 08:27
Forum: Military Issues & History Forum
Topic: Miscellaneous Pictures - Indian Armed Forces
Replies: 2910
Views: 171228

Re: Miscellaneous Pictures - Indian Military

Answering my own question - The Group captain is wearing the patch from the French E-3F squadron (EDCA 36). from here . Now the interesting part: His french counterpart has a red patch on which has a black bat-like figure in the middle and reads (in English) "Scanners - Always Alert". Is ...
by Shubham
19 Jan 2014 08:12
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 165353

Re: Indian Space Programme Discussion

Anyone having a first hand experience in successfully receiving GAGAN singal in India ??

Having searched the net , it appears GAGAN signal are from satellite(PRN) number 40 & 41. My own GPS having WAAS capabilities is not finding any satellite beyond 34.
by Shubham
01 Sep 2013 14:09
Forum: BR Nostalgia Archive
Topic: Narendra Modi vs the Dynasty: Contrasting Ideas of India
Replies: 40185
Views: 734995

Re: Narendra Modi vs the Dynasty: Contrasting Ideas of India

Gujarat Chief Minister Narendra Modi has reportedly expressed his displeasure with some BJP leaders allegedly shielding self-styled godman Asaram Bapu who has been accused of sexually assaulting a minor and then defying law and threatening and insulting the victim and her family. Some BJP leaders f...
by Shubham
01 Sep 2013 13:59
Forum: Strategic Issues & International Relations Forum
Topic: Delhi Case Follow-up thread
Replies: 1286
Views: 24569

Re: Delhi Case Follow-up thread

Asaram Bapu case smells straight out a copy of fake case made out against Jayendra Saraswati. The timing is also almost perfect. With the coming general election - congress has tried to prove itself more secular that the other by implication possibly the most followed Hindu saint presently in the co...

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