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Suggestion #03:  throw away NOW in the garbage the 5 and 5.5 segments SRBs

If you ask a 10 years old schoolboy what's the best way to carry 60 tons of cargo from location A to location B, while having only 40-tons trucks, his answer will be, that, the simplest, fastest and most economical way, is to use TWO 40-TONS TRUCKS loaded with 30 tons of cargo each.

But, if you ask the SAME question to NASA, its answer will be that, the best way, is to award a $50M research to a contractor to modify ONE of its 40-tons-trucks, to boost its cargo to 60-tons-max, then, after TEN years of development time and SIX billion$ of extra-costs, NASA will (finally) have (but that's not 100% sure...) a new 60-tons truck to carry a 60-tons "payload"!

You may believe this example as just a joke, but, unfortunately, THAT is EXACTLY what is happened in last FOUR years, STILL happens today and will likely happens in the next 8 years, since, NASA, instead of adopt ONLY its (ready available, cheap, man-rated and 249 times perfectly working, with just one failure in 28 years) 4-segments SRB (the standard SRB used in the Space Shuttles) has decided to scrap soon this excellent motor to develop a completely new and different 5 segments SRB (plus a 5.5 segments SRB for the Ares-5) that should need TEN years (+ further delays) to fly (IF it will fly...) and SIX billion$ (+ costs overruns) of extra-costs and that (thanks also to a new J-2X for the 2nd stage) has already caused the slippage of the 1st manned Ares-1/Orion flight from the ESAS' planned 2012, to an expected 2016, or a more realistic 2018.

So, my 3rd suggestion for HSFPC and NASA is: throw away NOW in the garbage the 5 and 5.5 segments SRBs and always use ONLY the ready available, cheap, reliable, safe, already man-rated and 249 times successful, standard 4-segments SRB (with just small changes, if necessary) in ALL future rocket designs that need a powerful solid propellent motor!

If you want to say that, scrap the new SRBs, means lose 3+ years of work and over 3 billion$ already burned in this project, think that, unfortunately it's too late to save the lost time and money, while, if you insist to develop the very bad 5/5.5 segments SRBs, NASA will lose (at least) 8 further years of time and 5-10 further billion$ of funds to develop a bad rocket motor that never can work and is a complete nonsense, since, with it (and, probably, also without it) the Ares-1 can't fly!

Personally, I believe that, late this year, when the Ares 1-X test will be performed, NASA engineers will discover the obvious about the Ares-1: the rocket will be unstable and, since it uses an uncontrollable solid propellent motor with a non-linear thrust curve, the test will show that, in some points of the flight, the acceleration is too high for a manned rocket, and the Ares-1 will be scrapped forever, that, also, since, an SRB can't be turned-off once burned, so, if launched alone, it could become very dangerous (in case of a failed or aborted launch) for the astronauts, the thousands KSC workers and the Florida inhabitants near the launch base, as explained in this ghostNASA article.

However, assuming the SRB will be proven safe (also if launched alone) and the Ares 1-X tests will give good results, there are several ways to design and build the new Ares-1 and Ares-5 rockets (quickly and much less costly) without develop and build any new (and very expensive) SRBs but just using the standard 4-segments version, as explained (years ago!!!) here, here, here, here, here, here, here, here, here, here and here.

After all, also the 10 years old schoolboy of my previous example, is perfectly able to understand and to explain why three 4-segments SRBs (12 segments in total) are pretty close (for total thrust and dry-mass) to two 5.5 segments SRBs (11 segments in total) and that a 5 or 5.5 segments SRB for the Ares-1 can be easily built (if necessary) using just two ready available, cheap, safe, reliable, man-rated and succesful 4-segments SRB AND a simple and very low cost BALLAST placed between the two standard SRBs!!!

 

b/w

If you ask a 10 years old schoolboy what's the best way to carry 60 tons of cargo from location A to location B, while having only 40-tons trucks, his answer will be, that, the simplest, fastest and most economical way, is to use TWO 40-TONS TRUCKS loaded with 30 tons of cargo each.

But, if you ask the SAME question to NASA, its answer will be that, the best way, is to award a $50M research to a contractor to modify ONE of its 40-tons-trucks, to boost its cargo to 60-tons-max, then, after TEN years of development time and SIX billion$ of extra-costs, NASA will (finally) have (but that's not 100% sure...) a new 60-tons truck to carry a 60-tons "payload"!

You may believe this example as just a joke, but, unfortunately, THAT is EXACTLY what is happened in last FOUR years, STILL happens today and will likely happens in the next 8 years, since, NASA, instead of adopt ONLY its (ready available, cheap, man-rated and 249 times perfectly working, with just one failure in 28 years) 4-segments SRB (the standard SRB used in the Space Shuttles) has decided to scrap soon this excellent motor to develop a completely new and different 5 segments SRB (plus a 5.5 segments SRB for the Ares-5) that should need TEN years (+ further delays) to fly (IF it will fly...) and SIX billion$ (+ costs overruns) of extra-costs and that (thanks also to a new J-2X for the 2nd stage) has already caused the slippage of the 1st manned Ares-1/Orion flight from the ESAS' planned 2012, to an expected 2016, or a more realistic 2018.

So, my 3rd suggestion for HSFPC and NASA is: throw away NOW in the garbage the 5 and 5.5 segments SRBs and always use ONLY the ready available, cheap, reliable, safe, already man-rated and 249 times successful, standard 4-segments SRB (with just small changes, if necessary) in ALL future rocket designs that need a powerful solid propellent motor!

If you want to say that, scrap the new SRBs, means lose 3+ years of work and over 3 billion$ already burned in this project, think that, unfortunately it's too late to save the lost time and money, while, if you insist to develop the very bad 5/5.5 segments SRBs, NASA will lose (at least) 8 further years of time and 5-10 further billion$ of funds to develop a bad rocket motor that never can work and is a complete nonsense, since, with it (and, probably, also without it) the Ares-1 can't fly!

Personally, I believe that, late this year, when the Ares 1-X test will be performed, NASA engineers will discover the obvious about the Ares-1: the rocket will be unstable and, since it uses an uncontrollable solid propellent motor with a non-linear thrust curve, the test will show that, in some points of the flight, the acceleration is too high for a manned rocket, and the Ares-1 will be scrapped forever, that, also, since, an SRB can't be turned-off once burned, so, if launched alone, it could become very dangerous (in case of a failed or aborted launch) for the astronauts, the thousands KSC workers and the Florida inhabitants near the launch base, as explained in this ghostNASA article.

However, assuming the SRB will be proven safe (also if launched alone) and the Ares 1-X tests will give good results, there are several ways to design and build the new Ares-1 and Ares-5 rockets (quickly and much less costly) without develop and build any new (and very expensive) SRBs but just using the standard 4-segments version, as explained (years ago!!!) here, here, here, here, here, here, here, here, here, here and here.

After all, also the 10 years old schoolboy of my previous example, is perfectly able to understand and to explain why three 4-segments SRBs (12 segments in total) are pretty close (for total thrust and dry-mass) to two 5.5 segments SRBs (11 segments in total) and that a 5 or 5.5 segments SRB for the Ares-1 can be easily built (if necessary) using just two ready available, cheap, safe, reliable, man-rated and succesful 4-segments SRB AND a simple and very low cost BALLAST placed between the two standard SRBs!!!

 


                                     


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