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Airframe Engine

R-73 archer missile question?

Found this @ http://www.bharat-rakshak.com/IAF/Ai...iles/R-73.html

"An improved version, designated R-73RDM2, has an up-rated rocket motor giving twice the range and seeker sensitivity of the earlier model under typical combat conditions. It can also be fired rearward to protect the rear hemisphere of the launching aircraft. It has a 90º off-boresight capability, re-programmable digital control electronics, a better resistance to IR counter-measures and the capability to engage low-flying targets. The integrated counter-countermeasures (ICCM) combines four different techniques and has an algorithm that will allow the missile to shift its aim from the engine of a targeted aircraft to the middle of the airframe in the final milliseconds of an intercept. The R-73RDM2 has a range of 40 km and a maximum speed of Mach 4."

Is this information true? And, what's the designation of the R-73 fitted with additional rocket booster section for backward operation?

The rearward firing model of the Archer was a standard Archer. No booster could be fitted due to flight control problems. Basically a standard archer with a aerodynamic fairing over its rear to reduce drag during carriage on the aircraft. When launched backwards its thrust vector control vanes were crucial to making it work. The R-27 had also been tested as being a much larger weapon it was expected that the extra fuel on board would compensate for starting off flying backwards. However without thrust vectoring vanes as the R-27 passed through the period of zero rearward speed as it accelerated backwards it no longer had anything holding the weight of the missile body up and its nose stalled and dropped down facing the ground as its big butterfly wings had no airflow and therefore stopped stabilising the weapon. The R-73 has thrust vector control vanes that managed to keep the nose pointing at the target through the problem phase of flying at zero speed and allowed the weapon to maintain continuous lock on the target. Range was dramatically shorter as you would expect.

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Airframe base $5 Airframe base

Airframe upside $5 Airframe upside

AIRFRAME BASE $3 AIRFRAME BASE

AIRFRAME UPSIDE $3 AIRFRAME UPSIDE

silver airframe $7 silver airframe

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Esky Lama V4: silver airframe $7 silver airframe

Esky Lama V4: blue airframe $7 blue airframe

Airfield P-47 750mm RC Warbirds Airframe Kit (Green) $69.95 AirField RC is proud to present another legend in our lineup of Warbirds. Along with the well-liked P-51 Mustang, Spitfire, T34, F4U, the Thunderbolt P-47 is perhaps the most popular fighter plane of World War II. The Thunderbolt P-47 , also known as the "Jug," was the largest, heaviest, and most expensive fighter aircraft in history to be powered by a single reciprocating engine. This p-47 also has improved aerodynamics so this will be sure to be in your collection of park flyers. Try one today and let the world know how much you love it!   4 Channel KIT airframe Made of Smooth, Lightweight EPO Foam, with Lots of Molded-In Surface Details Super tough, lightweight Airframe Perfect Appearance and Emulation Ground Take-Off Can Be Performed Easily Excellent Flight Performance Stable Inverted Flight Excellent Stability and Aerobatic Capability Detailed Body Structure Suitable for Experienced Pilots NO electronics included in this package. WINGSPAN : 750mm (29.5 inches) LENGTH : 665mm (26.2 inches) Package Include: Airplane KIT airframe English Manual

Airfield P-47 750mm RC Warbirds Airframe Kit (Silver) $69.95 AirField RC is proud to present another legend in our lineup of Warbirds. Along with the well-liked P-51 Mustang, Spitfire, T34, F4U, the Thunderbolt P-47 is perhaps the most popular fighter plane of World War II. The Thunderbolt P-47 , also known as the "Jug," was the largest, heaviest, and most expensive fighter aircraft in history to be powered by a single reciprocating engine. This p-47 also has improved aerodynamics so this will be sure to be in your collection of park flyers. Try one today and let the world know how much you love it!   4 Channel KIT airframe Made of Smooth, Lightweight EPO Foam, with Lots of Molded-In Surface Details Super tough, lightweight Airframe Perfect Appearance and Emulation Ground Take-Off Can Be Performed Easily Excellent Flight Performance Stable Inverted Flight Excellent Stability and Aerobatic Capability Detailed Body Structure Suitable for Experienced Pilots NO electronics included in this package. WINGSPAN : 750mm (29.5 inches) LENGTH : 665mm (26.2 inches) Package Include: Airplane KIT airframe English Manual

Breath Deflector For Airframe Helmets $5 Icon Breath Deflector For Airframe Helmets

EP 37.0? Aerobatic Do-335 Dornier Pfeil Twin Dual Engine EPO Foamy Scale Plane KIT Airframe (Green) $59.95 EP 35? Aerobatic Barracuda Scale Remote Control Plane. This package comes with 3 sets of propellers, spinners, glue and full set of hardware. Features: Super strong gauge foam fuselage and wings. Made of EPO shock resistant material. Excellent flying performance. Easy to assemble. Easy to fly. Ideal for Beginners. Specification: Length : 935mm (37") Wing span : 940mm (37.01") Main Wing Area : 17.8 dm² Flying Weight : 740g Motor :2-370A with Gearbox Propeller : 8 X 6" Items included: 37.0? Do-335 Dornier Pfeil  Scale Plane Airframe KIT Propeller * 3 Glue Decals Screw Driver Screws and hardware User Manual Requirement: Servos, Battery, ESC, Receiver, and Transmitter

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Airframe's Mid engine BEC



What made the F-106 Delta Dart obsolete when it was retired in the '80s? Airframe and engine, or Avionics?

It was a 50's design, only so much could be retrofitted but its main weakness was the fact that there was very little margin between its stall speed and the top tire speed making take-offs and landings very dicey: Variable geometry airframes corrected this deficiency, at the cost of weight and complexity. Also the fact that the ejection seat shot the pilot straight down when most ejections occur close to the ground was considered a bit of a drawback.

It is one of my favoritest of the Century series fighters.

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