highest flight
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highest flight
Has anyone ever got a record with a certain motor size that is the limit to how high that motor can go? A lot of the altitude records online look like they can be improved on but i was wondering if there was one record flight that cannot be beaten (like best fin shape and size, nose cone length, etc.).
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- Rocket Onlooker
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Re: highest flight
all records can be beaten. after designing the most efficient rocket and launching under the most ideal conditions, the easiest way that comes to mind would be from using a launch site higher elevation above sea level than the previous record which would be a difficult task in itself, that also raises other potential issues that we will ignore for now. Black rock desert, 4000ft. Westmar if I recall is not even close to that
Re: highest flight
Westmar's elevation is 825 feet FYI.
Re: highest flight
TRFfan2 wrote:Has anyone ever got a record with a certain motor size that is the limit to how high that motor can go? A lot of the altitude records online look like they can be improved on but i was wondering if there was one record flight that cannot be beaten (like best fin shape and size, nose cone length, etc.).
There's a joke in here around "optimize this" and N5800s but I'm not sure I know how to word it.
Andrew Hamilton
AMRS 28 L3
AMRS Records Committee Chairman
Max Alt AGL - 23,908ft - K300 - Balls 22
Max V - 2,488 ft/s, ~Mach 2.2 - M2250 - THUNDA 2015
AMRS 28 L3
AMRS Records Committee Chairman
Max Alt AGL - 23,908ft - K300 - Balls 22
Max V - 2,488 ft/s, ~Mach 2.2 - M2250 - THUNDA 2015
Re: highest flight
drew wrote:There's a joke in here around "optimize this" and N5800s but I'm not sure I know how to word it.
https://forum.ausrocketry.com/viewtopic.php?f=10&t=4488
"In thrust we trust"
AMRS 21 L3 RSO
TRA 07459 L3
Impulse:
2019: 0 Ns (0% N)
Ns 18: 14,767; Ns 17: 5,973; 16: 34,558; 15: 35,955; 14: 6,016; 13: 10,208
PB - Gorilla N2717WC, H: 10,260', S: M1.14
AMRS 21 L3 RSO
TRA 07459 L3
Impulse:
2019: 0 Ns (0% N)
Ns 18: 14,767; Ns 17: 5,973; 16: 34,558; 15: 35,955; 14: 6,016; 13: 10,208
PB - Gorilla N2717WC, H: 10,260', S: M1.14
Re: highest flight
Don't Debate This!! Hahaha (inside joke)
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AMRS #3 L3 ACO
Life member of QRS
NAR L2 #98260
MDRA Member #0241
Re: highest flight
Why does the 'optimise this' thread just end like that?! It's like tearing the back quarter off a novel before reading it lol.
Did it ever fly?
Did it ever fly?
Re: highest flight
But what i was implying is there any record out there that would be extremely hard to beat if you flew from the same altitude that they did. Like for example the tripoli g altitude record would be easy to beat (its only at 8700 ft) but the H altitude record would not be easy (at 14800 ft).chrisn wrote:all records can be beaten. after designing the most efficient rocket and launching under the most ideal conditions, the easiest way that comes to mind would be from using a launch site higher elevation above sea level than the previous record which would be a difficult task in itself, that also raises other potential issues that we will ignore for now. Black rock desert, 4000ft. Westmar if I recall is not even close to that
- SpaceManMat
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Re: highest flight
Digit wrote:Why does the 'optimise this' thread just end like that?! It's like tearing the back quarter off a novel before reading it lol.
Did it ever fly?
No we would have heard about it. I believe Mike got a new job and hasn't been able to get back to it.
Re: highest flight
TRFfan2 wrote:But what i was implying is there any record out there that would be extremely hard to beat if you flew from the same altitude that they did. Like for example the tripoli g altitude record would be easy to beat (its only at 8700 ft) but the H altitude record would not be easy (at 14800 ft).chrisn wrote:all records can be beaten. after designing the most efficient rocket and launching under the most ideal conditions, the easiest way that comes to mind would be from using a launch site higher elevation above sea level than the previous record which would be a difficult task in itself, that also raises other potential issues that we will ignore for now. Black rock desert, 4000ft. Westmar if I recall is not even close to that
If I were you I'd focus less on records and more on people. Nic Lottering and Curt von Delius are the two names that spring to mind. That said Nic is amazing at documenting his builds and Curt is well known for not "pulling back the curtains" so to speak. So have a look at what Nic has done with his minimum diameter builds on this forum; he's the best person I know in the hobby for eeking every bit of altitude out of a motor/airframe combination.
Also I'd recommend listening to people more experienced in these types of flights if they're telling you your rocket most likely won't be stable. Many a US university student have designed minimum diameter N5800 "capable" rockets that were never capable of surviving the boost of that motor as their stability margin was too tight. I've even fallen victim to this when attempting to fly an I59 in a 38mm minimum diameter airframe. Just because OpenRocket/RASAero/Rocksim state that your minimum diameter N5800 will crack just over 100k ft doesn't make it real. There's a reason why it's called a rocket simulator. Just keep that in mind, especially if someone has just successfully flown that motor. The last thing anyone wants to hear after successfully executing a high performance flight is some wanker stating they'd love to see someone make that flight on an "optimized" airframe as they'd easily squeeze another 20-30k ft out of the motor.
Andrew Hamilton
AMRS 28 L3
AMRS Records Committee Chairman
Max Alt AGL - 23,908ft - K300 - Balls 22
Max V - 2,488 ft/s, ~Mach 2.2 - M2250 - THUNDA 2015
AMRS 28 L3
AMRS Records Committee Chairman
Max Alt AGL - 23,908ft - K300 - Balls 22
Max V - 2,488 ft/s, ~Mach 2.2 - M2250 - THUNDA 2015
Re: highest flight
Exactly!
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