RC India
Welcome Guest, please login or register.
 
Pages: [1]   Go Down
0 Members and 1 Guest are viewing this topic. Topic Tools Topic Tools 
Read
« on: September 29, 2020, 04:25:54 PM »
Kaushik S
Plane Lover
Active Member
**

Reputation Power: 1 
Kaushik S has no influence.
Offline Offline

City: Chennai
State: Tamil Nadu
RC Skills: Beginner
Posts: 35
Join Date: Sep, 2020




Hello,
Imagine - EDF which generates 25kg thrust with a power of 24s, 15000mah 25c battery.

If I calculate flight time -
No.of minutes in a hour           = 60
Discharge Rate of Battery       = 25C
So, 60/25 = 2.4min.

If I calculate I get only 2.4min.
If i want to extend the flight time what can I do???
Logged
 

Read
« Reply #1 on: September 29, 2020, 07:11:07 PM »
Kaushik S
Plane Lover
Active Member
**

Reputation Power: 1 
Kaushik S has no influence.
Offline Offline

City: Chennai
State: Tamil Nadu
RC Skills: Beginner
Posts: 35
Join Date: Sep, 2020



Hello please reply.
Answer my Question
Logged
 

Read
« Reply #2 on: September 30, 2020, 12:28:07 PM »
Kaushik S
Plane Lover
Active Member
**

Reputation Power: 1 
Kaushik S has no influence.
Offline Offline

City: Chennai
State: Tamil Nadu
RC Skills: Beginner
Posts: 35
Join Date: Sep, 2020



Why you guys are not responding
Logged
 

Read
« Reply #3 on: September 30, 2020, 01:23:54 PM »
asperised
Plane Lover
Active Member

**

Reputation Power: 1 
asperised has no influence.
Offline Offline

City: Chennai
State: Tamil Nadu
RC Skills: Beginner
Posts: 53
Join Date: Apr, 2020



As I explained to you already, discharge rating is used to calculate the maximum amount of current a battery is capable of delivering. A 15000mah 25c battery is capable of delivering a maximum of 15*25A constantly. The motor doesn't necessarily consume 375A of current. The current consumed varies and is usually on the lower side. We can't help you with the battery life estimation unless you give us more details of the motor, maybe it's datasheet? We also need to know more details about the aircraft. Since I know that you are interested in EDF jets, I'll let you know that jets don't produce as much lift as a glider and hence would generally require more power than a similarly weighed glider and hence you'll get a much lower flight time.
Logged
 

Read
« Reply #4 on: September 30, 2020, 04:25:05 PM »
Kaushik S
Plane Lover
Active Member
**

Reputation Power: 1 
Kaushik S has no influence.
Offline Offline

City: Chennai
State: Tamil Nadu
RC Skills: Beginner
Posts: 35
Join Date: Sep, 2020



Ok bro.
But edfs looks quite pretty.
That's why I got to EDFs.
You may ask me to use turbines.
But I don't want to as it causes pollution.
I don't want to be a source of air pollution.
So, Anyway thankyou for your suggestion.
If you have solutions for EDF jets flight time kindly inform me


Thank you once again
Kaushik
Logged
 

Read
« Reply #5 on: September 30, 2020, 05:46:50 PM »
Mohammed Naveed
Plane Lover
Forum Hero
*****

Reputation Power: 10 
Mohammed Naveed has no influence.
Offline Offline

City: Bangalore
State: Karnataka
RC Skills: Intermediate
Posts: 666
Join Date: Jul, 2015



Ok bro.
But edfs looks quite pretty.
That's why I got to EDFs.
You may ask me to use turbines.
But I don't want to as it causes pollution.
I don't want to be a source of air pollution.
So, Anyway thankyou for your suggestion.
If you have solutions for EDF jets flight time kindly inform me


Thank you once again
Kaushik
What do you think would happen when your lipos go bad, disposing lipo is much more of a hassle, if your lipo catch fire they gonna create more air pollution! How do plan on making your aircraft? Sure it requires you to either cut or glue material which either release dust or fumes again source of air pollution!

Regards,
Mohammed Naveed
Logged
 

Read
« Reply #6 on: September 30, 2020, 08:30:46 PM »
asperised
Plane Lover
Active Member

**

Reputation Power: 1 
asperised has no influence.
Offline Offline

City: Chennai
State: Tamil Nadu
RC Skills: Beginner
Posts: 53
Join Date: Apr, 2020



The process of making batteries currently isn't very eco friendly either.
Logged
 

Read
« Reply #7 on: October 01, 2020, 02:02:08 AM »
prabal276
In the Air
Plane Lover
Forum Hero

*****

Reputation Power: 15 
prabal276 has no influence.
Offline Offline

City: Delhi
State: Delhi
RC Skills: Intermediate
Posts: 1411
Join Date: Mar, 2013

One step at a time :)



Kaushik,

If you don't mind me asking, what is your age?
And have your checked out the flite test beginner series? Great place to start!

https://www.youtube.com/playlist?list=PL6IuSFWz4ktvupu_gxw1vn-sjBGOkJFHV
Logged

Student Pilot.
Railfan!
Along with RC Planes, I model Indian Railways in Paper.
https://www.youtube.com/channel/UCroDDsdqE-w2CvteWbPGJ-A
 

Read
« Reply #8 on: October 01, 2020, 08:56:46 AM »
shirsa2001
Plane Lover
Forum Veteran

****

Reputation Power: 4 
shirsa2001 has no influence.
Offline Offline

City: Pune
State: Maharashtra
RC Skills: Intermediate
Posts: 355
Join Date: Sep, 2017



He is a school going kid.
Dear Kaushik .... as we discussed in pms many times please concentrate on begin line and not try to jump into the end line...like 1000kgs payload on epp foam etc.... else you may soon loose interest and miss this wonderful hobby.


You can consider the link Prabal provided...its from the same site we discussed earlier.
« Last Edit: October 01, 2020, 09:21:54 AM by shirsa2001 » Logged
 

Read
« Reply #9 on: October 01, 2020, 09:30:30 PM »
K K Iyer
Global Moderator
Forum Hero
*****

Reputation Power: 54 
K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.
Offline Offline

City: Indore
State: Madhya Pradesh
RC Skills: Intermediate
Posts: 4558
Join Date: Jan, 2012



@kaushik s,

Let me give you a simple example.

Assume you have 6 idlis available.
If you eat 6 at a time, they will last for 1 day
If you eat 3 at a time, they will last for 2 days
If you eat 2 at a time, they will last for 3 days

Same with duration from lipos.

Regards
Logged
 

Read
« Reply #10 on: October 02, 2020, 09:25:29 AM »
pnkyjs
Plane Lover
Forum Veteran
****

Reputation Power: 5 
pnkyjs has no influence.
Offline Offline

City: Satara
State: Maharashtra
RC Skills: Intermediate
Posts: 377
Join Date: Apr, 2010



Thats an interesting way with idli.
May I suggest making a 1:10 scale model of the 1000kg model . Many problems would get sorted. With less costly waste. ;-)
Logged

V911
V977
XFX 450 V2
Scratchbuild foamies galore
 

Read
« Reply #11 on: October 04, 2020, 10:04:59 PM »
K K Iyer
Global Moderator
Forum Hero
*****

Reputation Power: 54 
K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.
Offline Offline

City: Indore
State: Madhya Pradesh
RC Skills: Intermediate
Posts: 4558
Join Date: Jan, 2012



Thats an interesting way with idli.
May I suggest making a 1:10 scale model of the 1000kg model . Many problems would get sorted. With less costly waste. ;-)

A 1/10 scale model of a 1000kg model will weigh 100kg, or enough for an unsolicited entry into jail.
Logged
 

Read
« Reply #12 on: October 04, 2020, 10:18:39 PM »
Kaushik S
Plane Lover
Active Member
**

Reputation Power: 1 
Kaushik S has no influence.
Offline Offline

City: Chennai
State: Tamil Nadu
RC Skills: Beginner
Posts: 35
Join Date: Sep, 2020



He is a school going kid.
Dear Kaushik .... as we discussed in pms many times please concentrate on begin line and not try to jump into the end line...like 1000kgs payload on epp foam etc.... else you may soon loose interest and miss this wonderful hobby.


You can consider the link Prabal provided...its from the same site we discussed earlier.


You don't worry about my internet
Logged
 

Read
« Reply #13 on: October 04, 2020, 10:20:12 PM »
Kaushik S
Plane Lover
Active Member
**

Reputation Power: 1 
Kaushik S has no influence.
Offline Offline

City: Chennai
State: Tamil Nadu
RC Skills: Beginner
Posts: 35
Join Date: Sep, 2020



Thats an interesting way with idli.
May I suggest making a 1:10 scale model of the 1000kg model . Many problems would get sorted. With less costly waste. ;-)

A 1/10 scale model of a 1000kg model will weigh 100kg, or enough for an unsolicited entry into jail.


Why even there is a record of 150kg Concorde RC
Logged
 

Read
« Reply #14 on: October 04, 2020, 10:43:32 PM »
Mohammed Naveed
Plane Lover
Forum Hero
*****

Reputation Power: 10 
Mohammed Naveed has no influence.
Offline Offline

City: Bangalore
State: Karnataka
RC Skills: Intermediate
Posts: 666
Join Date: Jul, 2015



Thats an interesting way with idli.
May I suggest making a 1:10 scale model of the 1000kg model . Many problems would get sorted. With less costly waste. ;-)

A 1/10 scale model of a 1000kg model will weigh 100kg, or enough for an unsolicited entry into jail.


Why even there is a record of 150kg Concorde RC
The owner of that Concord needs special permissions and certification from concerned authorities to operate his vehicle, without those it's just a static display model!

What everyone has been trying to say here is that you start small, learn the basics !

Get an EDF Jet or build a single Edf powered aircraft, the FT Viggen from flite test could be a starting point. Once you understand how things work out try building a 2kg model then 5kg model then 10kg model and so on. This way you'll learn alot! I'm sure money isn't a issue in your case as you mentioned earlier!

Take for example Ramy Rc on YouTube that guy has built amazing scale airliners out of foam and now he builds composite scale airliners, so you can see the way he has progressed over the years!

Regards,
Mohammed Naveed
Logged
 

Read
« Reply #15 on: October 04, 2020, 10:51:38 PM »
K K Iyer
Global Moderator
Forum Hero
*****

Reputation Power: 54 
K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.
Offline Offline

City: Indore
State: Madhya Pradesh
RC Skills: Intermediate
Posts: 4558
Join Date: Jan, 2012



Right.

BTW, last few years I’d been offering a prize of Rs 1000 for a 10 second flight, Rs 2000 for 20 seconds etc. Two other members offered to match the prize money.
Unfortunately no one could put up even a 10 second flight, so after 3-4 years, the prize offer was withdrawn.

It’s only a token prize, but would you like to try? Offer closes at 9pm on Sunday the 11th Oct.

I look forward to you attempting a 10 second flight.
No restrictions. RC, free flight, balsa, depron, coro, paper, engine, electric, rubber power, no power, frisbee, boomerang, ANYTHING.

Best wishes.
Iyer
« Last Edit: October 05, 2020, 01:44:22 PM by K K Iyer » Logged
 

Read
« Reply #16 on: October 05, 2020, 10:33:20 PM »
K K Iyer
Global Moderator
Forum Hero
*****

Reputation Power: 54 
K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.
Offline Offline

City: Indore
State: Madhya Pradesh
RC Skills: Intermediate
Posts: 4558
Join Date: Jan, 2012



Pl note
Prize increased to Rs 5000!
Logged
 

Read
« Reply #17 on: October 06, 2020, 10:28:32 PM »
K K Iyer
Global Moderator
Forum Hero
*****

Reputation Power: 54 
K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.K K Iyer is on the verge of being accepted.
Offline Offline

City: Indore
State: Madhya Pradesh
RC Skills: Intermediate
Posts: 4558
Join Date: Jan, 2012



Prize claimed within 24 hours!

See ‘Next contest -20second flight’ if interested.

Regards
Logged
 

Pages: [1]   Go Up
Jump to:  

Related Topics
Subject Started by Replies Views Last post
how to increase flight time??????
Electric Power
jeevan reddy 15 7590 Last post March 26, 2012, 09:01:07 PM
by satishkbg
Flight time of a quadcopter....
Multirotors
jeevan reddy 10 6368 Last post June 25, 2012, 05:49:17 PM
by Geetesh
FLIGHT TIME
Electric Power
krishnateja 5 3285 Last post April 29, 2013, 08:12:08 AM
by Salam
need help with flight time
Batteries and Chargers
Rajesh14305 11 4159 Last post August 26, 2014, 01:52:52 PM
by sanjayrai55
129 minustes of flight time
Multirotors
Sukhpreet 5 1058 Last post January 08, 2016, 09:32:55 AM
by Sukhpreet