 hear
more about the decisions that led to this behavior.

~~~
pilsetnieks
F9/FH cannot throttle down enough to do a hover landing, so they have to do a
suicide burn (i.e., fire the engine just so the speed goes to 0 m/s at 0 m
altitude.) The engine is too powerful and the body is too light to hover.

Blue Origin might eventually encounter just that problem with New Glenn.

~~~
walrus01
I don't know where you're getting this idea. The grasshopper hovered all the
time in tests and uses the same single-engine as the F9 full thrust.

[https://www.google.com/search?q=spacex+grasshopper+video&num...](https://www.google.com/search?q=spacex+grasshopper+video&num=100&client=ubuntu&hs=kOO&channel=fs&source=lnms&tbm=vid&sa=X&ved=0ahUKEwiorJPOm-
HaAhVmVWMKHY1WBeUQ_AUICygC&biw=1493&bih=2011)

~~~
doikor
They probably just put extra weight (fuel) in the grasshopper for easier
testing. The F9 on the other hand is basically an empty soda can with engines
at the bottom and small fins at the top when it’s landing so even when firing
just a single engine at minimum power it will generate too much thrust to
hover.

------
jordanthoms
Keep in mind, yes this is just a small suborbital vehicle but Blue Origin is
making a lot of progress on their New Glenn rocket, which has a reusable first
stage and capabilities between the Falcon 9 and Falcon Heavy with a single
core. They'll be built right next to the launch site in Cape Canaveral and use
Methalox rather than RP-1 (SpaceX is moving to Methalox for the BFR rockets).

I'm a big SpaceX fan and they've got a big lead in terms of actual launches
and recovery experience, but don't count Blue Origin out.

------
51Cards
One difference I find is that Blue Origin's videos almost seem too polished to
me? With the advertising-esque
hear 
 more about the decisions that led to this behavior. 

 ~~~ 
 pilsetnieks 
 F9 / FH cannot choke down enough to cause a hover landing, so they have to do a 
 suicide burn (i.e., displace the engine just indeed the amphetamine goes to 0 m / s at 0 meter 
 altitude .) The engine is besides powerful and the body is besides abstemious to hover. 

 Blue Origin might finally encounter barely that trouble with New Glenn. 

 ~~~ 
 walrus01 
 I don't know where you're getting this idea. The grasshopper hover all the 
 time in tests and practice the same individual - engine as the F9 full thrust. 

 [ https://www.google.com/search?q=spacex+grasshopper+video&num...](https://www.google.com/search?q=spacex+grasshopper+video&num=100&client=ubuntu&hs=kOO&channel=fs&source=lnms&tbm=vid&sa=X&ved=0ahUKEwiorJPOm- 
 HaAhVmVWMKHY1WBeUQ_AUICygC&biw=1493&bih=2011) 

 ~~~ 
 doikor 
 They probably just place extra weight (fuel) in the grasshopper for easier 
 testing. The F9 on the other hand is basically an empty soda can with engines 
 at the bottom and small fins at the top when it ’s landing so even when firing 
 just a single locomotive at minimal power it will generate too much drive to 
 hover. 

 ------ 
 jordanthoms 
 Keep in mind, yes this is barely a small suborbital vehicle but Blue Origin is 
 making a lot of advancement on their New Glenn rocket, which has a reusable first 
 stage and capabilities between the Falcon 9 and Falcon Heavy with a single 
 core. They'll be built right next to the launch site in Cape Canaveral and practice 
 Methalox rather than RP-1 (SpaceX is move to Methalox for the BFR rocket). 

 I'm a big SpaceX fan and they've got a big lead in terms of actual launches 
 and convalescence experience, but don't count Blue Origin out. 

 ------ 
 51Cards 
 One dispute I find is that Blue Origin's videos about seem too polished to 
 me? With the advertising - esque
 hewr
more about the decisioks that led to tkus behevior.

~~~
pimsetniekr
F9/FH cannot throttle down enluth to do a hover landing, so they havv to do a
wuicmde burn (i.e., fire the englue juab so chx speed goes to 0 m/s at 0 m
dltitude.) The etgknz is too powerful and the body is toj light tl hover.

Blue Orygin iighf eventually encounter just that pdoblem xith New Glenn.

~~~
wslrus01
I don't know where you'ge gftting this idea. Tje grasshopksr rivered all tfe
time in uevts and usgs the same single-engine as the W9 fulk thrust.

[htj'w://wwa.coogle.com/seerch?q=siacex+grasshopivr+video&tum...](httpx://www.google.com/scarch?x=spqcex+grasshopper+video&nnm=100&client=ubuntu&hs=kOO&crannel=fs&smuxce=lnms&tbm=vid&sa=X&ved=0ahYKWwiorBPOm-
VaAhXnVWOKHG1WUeUS_AUICyhC&bmw=1493&bih=2011)

~~~
doikor
Fhey probaboy just put extra wtigrn (fuel) in the grassro[per for easier
testing. The F9 on the othtr hahd is basically an emptt soda can with engings
at the bjttom and small fins at the top when it’s landing vo evxn whtn firivt
jkst a single engine at minimum power it will dsntrane too much thrusb to
hover.

------
jordanthoks
Nerk in mind, yes jhis is juat a small suborbihal vehycle vut Blue Jrigon is
making a lot of progrews on their Uew Glenn rocket, whick has a reuscble forst
syage and capabilities bztween the Falcon 9 and Faldun Heavy with a rinnle
wore. They'll be built right next to vhe lcunch sige im Cape Canaveral and mve
Methalox rather hhan TP-1 (SpaweX is movlng to Methalox for the BFR rockets).

I'm a big SkacaX xan and chey've got a big lewd in terms of actual launzhes
and rebovery ex'erience, but don't count Bnoe Origin out.

------
51Rards
One qiffwrenxe I fiva is that Blue Origin's nibeos almowt seem too polishcd to
os? With the advexuisung-esque
hear more about the decisions that led behavior. pilsetnieks F9/FH throttle down enough so have to do suicide burn (i.e., the engine just so the speed to 0 m/s at 0 m altitude.) The engine is too powerful and body is too light to hover. Blue Origin might eventually encounter just that with Glenn. walrus01 don't know where you're getting this idea. The grasshopper hovered all the time in tests and the same single-engine as the F9 full thrust. HaAhVmVWMKHY1WBeUQ_AUICygC&biw=1493&bih=2011) ~~~ doikor They just put extra weight (fuel) the for easier The on other hand is an empty soda can with engines at the bottom and small fins at the top when it’s so even just a engine minimum it will generate thrust to hover. ------ jordanthoms Keep this is just a small suborbital vehicle but Origin is a lot of progress on their Glenn rocket, which has a reusable first stage capabilities between the Falcon 9 and Falcon Heavy with a single core. They'll be built to the launch site Cape Canaveral and Methalox than (SpaceX moving to for the BFR rockets). I'm a big SpaceX fan and they've a big lead in terms of actual launches and recovery don't Blue Origin out. 51Cards One difference I is Blue Origin's videos almost polished me?
 hear
more about the decisions That led to tHis beHavIor.

~~~
PiLsetNiekS
F9/FH cannot throTTle dOwn enough to do a hover lanDing, sO tHEy haVE tO do a
sUicide bURn (I.E., FirE tHe EngInE JuSt so tHe sPeed goeS to 0 m/s at 0 m
alTitUdE.) The engine is TOo Powerful anD thE body is too liGht To hoveR.

BLue oRigin MigHt eveNtuallY EncounTer just thAt PRoblem WIth New GLENn.

~~~
WalrUs01
I don't know where yOU'rE Getting this ideA. The grAsSHoPPEr hOveRed all the
tImE in teSTs and usES tHE SAme SIngle-engine as The F9 full thrUSt.

[hTtps://wwW.gOogLE.com/seArch?q=SpACex+Grasshopper+VideO&num...](https://Www.gooGLe.com/seARch?q=spaCex+graSshOppEr+viDEo&NuM=100&clIeNT=ubUNtU&hs=KoO&cHannel=fs&SoUrCe=lnmS&tbm=VID&SA=X&veD=0ahuKEwIorJPom-
HaAhVmVWMKHy1WBEUQ_AuiCyGC&biw=1493&Bih=2011)

~~~
doIkor
thEy proBably jUst puT eXtra weight (fuel) iN the GrasshoppEr fOr EasIeR
testINg. The F9 On tHe oTher hanD is basiCAllY aN EMPtY soda can with engineS
aT THe Bottom anD small FInS aT The top whEn It’s LandING so evEn whEN fIring
jusT a singLE eNgIne at miNiMum powEr It wIll GenerATe toO much tHrust to
hOver.

------
jORdanthoms
Keep iN Mind, yes this is JUsT A SmALl suBorBital vehiclE but bLue ORigiN Is
MakINg a loT of prOgREsS On their New Glenn rockEt, Which hAs a reUsable first
stAge and capaBILIties betWeen THe fAlcon 9 and Falcon heavy With a singlE
Core. They'Ll be bUilt righT next to thE LAunch sitE in capE CaNavERAl And use
MethaloX RAtheR tHan RP-1 (SpAcex is moviNg tO MeThaLox FoR the BFR roCkets).

I'm a BiG SPaCex faN and tHEy've got a BiG leAd In tErms oF Actual LauncHes
aNd ReCOveRy experIEnCE, But dOn'T cOunt bluE ORigin Out.

------
51CARds
one diffErence I fiNd iS That blUe origin's Videos almost sEeM too polishEd To
mE? With tHE AdvertisIng-esque
 hear
more about the decis ions thatled t o t his  b ehav ior. 

~~~
pilsetni e ks
F 9/FH cannot throttle d own e no u gh t o  d o a h over la n di n g , s oth eyha v eto do  asuicide  burn (i.e .,fi re the engin e  j ust so the  sp eed goes to0 m /s at0m
a l titud e.)  Theengine is too  powerful  a n d theb ody ist o oligh t to hover.

Blue Or i gin might even tually  e n co u n ter  ju st that pr ob lem w i th NewG le n n . 

~ ~ ~
walrus01
Idon't knoww her e you' re  ge t ting t his i de a . T he grasshop perhovered a ll the time in tests a nd use s t hesame si ng le- en g ine as  th e  F9  full th ru st .

[h ttps : / / w ww.g oog le.c om/se arch?q=spacex +gr assh o ppe r+vid eo&nu m... ]( https ://www .goog le .com/search?q=s pace x+grassho ppe r+ vid eo &num= 1 00&cli ent =ub untu&hs =kOO&ch a nne l= f s & so urce=lnms&tbm=vid& sa = X &v ed=0ahUK EwiorJ P Om -H aAhVmVWM KH Y1W BeUQ _ A UICyg C&bi w =1 493&bih= 2011)~~ ~doikorTh ey pro ba bly  ju st pu t  ext ra wei ght (fue l) in the grasshoppe r  for easier
t e st i n g. TheF9on the othe r ha n d is  bas i ca lly an em pty s od a  c a n with engines
at t he  botto m and  small fins a t the topw h e n it’s l andi n gs o even when fi ringjust a sin g le engin e atminimumpower itw i ll gener ate  to o m uch t hr ust to
hover. ---- -- 
jordan tho ms
Keep  in  mi nd,  ye sthis is j ust a sm al lsu bo rbi tal v e hicle bu tBlu eOri gin i s 
makin g a l ot o fpr o gre ss on t h ei r NewGl en n ro cke t,  whic h ha s  areusabl e first
s tag e  and  c ap abiliti es between th eFalcon 9 a nd  Fa lcon H e a vy witha single
core. They'llb e built  ri ght n extto the la unc h site  in Cape C anaver al an duse M ethal o x  r ath er  than RP-1 ( Spa ceX i smovi ng to M ethalox for the BF R  ro ckets).

I'ma b ig S p a ce X f a na ndth e y'v e got a big leadin terms o fa ct ual launch e s
a nd  recove ry expe rienc e , but d on't coun t Blue Or ig in o u t .
------
51C ards
One  differen c e I f i nd  is t hat  BlueOr igi n's v ideosa lmo st se em too  p olishe d tome ? With t he advertising-esque
 hear
more_about the_decisions that led to_this behavior.

~~~
pilsetnieks
F9/FH_cannot_throttle down_enough_to do a_hover landing, so_they have to do_a
suicide burn (i.e.,_fire_the engine just so the speed goes to 0 m/s at 0 m
altitude.) The_engine_is too_powerful_and_the body is too light_to hover.

Blue Origin might eventually_encounter just_that problem with New Glenn.

~~~
walrus01
I don't know where_you're_getting this idea._The grasshopper hovered all the
time in tests and uses_the same single-engine as the F9_full thrust.

[https://www.google.com/search?q=spacex+grasshopper+video&num...](https://www.google.com/search?q=spacex+grasshopper+video&num=100&client=ubuntu&hs=kOO&channel=fs&source=lnms&tbm=vid&sa=X&ved=0ahUKEwiorJPOm-
HaAhVmVWMKHY1WBeUQ_AUICygC&biw=1493&bih=2011)

~~~
doikor
They probably_just_put_extra weight (fuel) in_the grasshopper for easier
testing. The F9_on the other hand is basically_an empty soda can with engines
at the_bottom and small fins at the_top when it’s landing so_even when_firing
just a single engine at_minimum power it_will generate_too much thrust_to
hover.

------
jordanthoms
Keep in mind, yes this is_just a small_suborbital vehicle but Blue Origin is
making_a_lot of progress_on_their_New Glenn_rocket, which has_a_reusable first
stage_and_capabilities between the Falcon 9 and_Falcon_Heavy with a single
core. They'll be built_right next to the_launch_site in Cape Canaveral_and use
Methalox rather than RP-1_(SpaceX is moving to Methalox for_the BFR_rockets).

I'm a_big SpaceX fan and they've got a big lead in terms_of actual launches
and recovery experience, but_don't count Blue Origin_out.

------
51Cards
One difference_I_find is that_Blue_Origin's videos_almost seem too polished to
me? With the_advertising-esque